Prevalence and associated risk factors of hypertension and pre-hypertension among the adult population: Findings from the Dubai Household Survey, 2019

DOI: https://doi.org/10.21203/rs.3.rs-606365/v1

Abstract

Background

Minimal data is available on the prevalence and correlates of hypertension and prehypertension in Dubai. The study aims to measure the prevalence of hypertension and pre-hypertension and the associated socio-demographic characteristics, behavioral risk factors and comorbidities among the adult population of Dubai.

Methods

This study used data from the Dubai Household Health Survey, 2019. A cross-sectional population survey based on a complex stratified cluster random design. The total eligible sample included 2,530 adults (18+). Sociodemographic and behavioral factors were considered as independent covariates. The main study outcome variables, pre-hypertension and hypertension, were ordinal, with normotension as the reference group.

Results

The overall prevalence of hypertension in adults was 32.5% (38.37% in males and 16.66% in females). Prehypertension was prevalent in 29.8% of adults in Dubai (28.85% in males and 32.31% in females). The multivariate logistic regression analysis revealed that age groups, gender, occupation, and high Body Mass Index were significantly associated with a higher risk of hypertension at the level of p < 0.05. No clear trend toward a higher correlation of hypertension was noted with the increase in age, except after the age of 50 years. Males were five- times more likely to be hypertensive than females. Participants enrolled in skilled and service works had a five times higher risk of hypertension, compared with the reference group (professionals). Obese subjects had a 5.47 times greater correlation of hypertension compared with normal-weight subjects. Physically active individuals were less likely to develop hypertension. For the correlates with prehypertension in the present analysis, skilled and service workers and those working in elementary jobs had a higher risk of prehypertension, compared with the reference group (professionals) Individuals with a status of overweight were associated with a higher prevalence of prehypertension compared with people of normal weight.

Conclusions

This study showed a high prevalence of prehypertension and hypertension among adults in Dubai. Some socio-demographic and behavioral risk factors were correlated with prehypertension and hypertension among the studied population. Interventions aiming at increasing public awareness about such risk factors are essential.

Introduction

Hypertension (HTN), defined as elevated blood pressure beyond normal ranges, is recognized as one of the major non-communicable health disorders and a public health challenge worldwide [1]. According to the World Health Organization (WHO), hypertension accounts for one out of eight mortalities worldwide [2]. Hypertension prevalence has risen over the last decades around the world. The latest estimates showed that nearly one-third of the adult world population is having hypertension (31.1%, 1.39 billion); of whom two-thirds are living in low- and middle-income countries (LMICs) [3]. A systematic analysis of population-based studies from 90 countries estimated that hypertension among adults was more prevalent in LMICs (31.5%) than in high-income countries (28.5%) [4]. In particular, the Gulf countries have become one of the most affected in the region with the rising trends of HTN in the world [5]. This is due to the rapid economic development, speedy urbanization, aging of the population, unhealthy dietary habits and lifestyle changes that occurred during the past decades within these countries [6]. Such epidemiological transition significantly contributes to changes in disease patterns and causes a growing number of undiagnosed, diagnosed and uncontrolled hypertensive individuals in many settings [7].

The term prehypertension (PHTN) has been introduced in 2003 to draw attention to the increased risks resulting from high blood pressure [8]. People with PHTN reported having a higher risk of progressing to HTN and an elevated risk of cardiovascular morbidity and mortality [2, 9, 10]. Currently, there is a rising potential for primary prevention and early detection efforts to prevent the transition from PHTN to HTN and the increase in cardiovascular risks [11].

Previous studies have identified several factors that put people at risk of developing HTN [4, 11, 12]. Some are non-modifiable factors such as age, gender, family history, and ethnicity. On the other hand, smoking, alcohol consumption, diet, physical inactivity, Body Mass Index (BMI), abdominal obesity, stress, hyperglycemia, and hypercholesterolemia are among the many modifiable correlates of hypertension [1215].

Dubai is one of the seven Emirates that make up the United Arab Emirates (UAE) [16]. The Dubai Health Authority (DHA) is the government entity that oversees the health status of the population and ensures excellence in healthcare provision to all residents [17]. Therefore, DHA conducts Dubai Household Surveys (DHHS) on a five-year interval basis to investigate a wide range of health, social and economic issues as well as assessing for PHTN and HTN among the sampled adult population of Dubai.

Studies on the prevalence and correlates of PHTN and HTN among the Dubai population are scarce. Therefore, this study aimed to measure the prevalence of hypertension and pre-hypertension among the adult population of Dubai and identify the associated sociodemographic characteristics, behavioural risk factors, and comorbidities.

Methodology

Data Source & study design

This study used data from the Dubai household survey (DHHS) that was conducted in 2019. The DHHS is a population-based cross-sectional study that was designed to assess the health status of the population of Dubai emirate. The survey covered several economic, sociodemographic, behavioral and health-related aspects. More than 2,240 families (Emirati and non-Emirati) were selected through a complex design of stratified clustered random sampling technique. Data related to socio-demographic characteristics, behavioral risk factors, and medical conditions were collected using a modified version of the World Health Surveys questionnaire. In addition, participants underwent selected clinical measurements, including blood pressure (BP) and anthropometry, and laboratory tests to measure levels of blood sugar.

Variables Ad Measures

Socio-demographic variables included age, gender, marital status, nationality, education, occupation, and work status. Marital status was categorized as married, single, or others (divorced/ and widowed). Nationality was a categorical variable with four groups: UAE-Nationals, Asians, other Arabs, and Western & others. Participant’s educational attainment was classified as; ‘less than secondary’, ‘completed secondary or high diploma’, and ‘university bachelor degree or above education’. Participants’ occupations were classified based on the international standard classification of occupations and were then re-grouped into three categories; 1) professionals, 2) skilled and service 3) elementary or unskilled occupations, and others [18]. Besides, the socio-demographics, the study also inquired about the health behavior risk factors including smoking, physical activity status and alcohol use. Adequate fruit and/or vegetable consumption was considered if the participant consumed at least five servings/day. Physical activity status was classified as “active” as per the WHO recommendations of at least 30 minutes of regular, moderate-intensity physical effort for at least five days a week, totaling 150 minutes [19]. Participants were considered as current smokers if they reported smoking any type of tobacco product over the past year. Alcohol consumption was defined as any alcohol usage during the month preceding the survey.

Outcome Variables

HTN and PHTN were operationally defined according to the diagnostic cut-off points of the WHO criteria [8]. Throughout this study, the prevalence of hypertension was based on both self-reported individuals that were previously diagnosed with hypertension and the newly diagnosed during the survey (undiagnosed hypertension). A normal adult has Systolic Blood Pressure (SBP) below 120 mmHg and Diastolic Blood Pressure (DBP) of less than 80 mmHg and was identified as normotensive in the current analysis. Pre-hypertension is diagnosed with SPB of 120–139 mmHg or DBP of 80–89 mmHg. While hypertension is defined as SBP of equal to or above 140 mmHg and DBP equal to or above 90 mmHg. Participants were screened for hypertension by blood pressure measurements using calibrated sphygmomanometers. Each individual had three blood pressure measurements at two points of time after the first measurement. The mean of the three blood pressure readings was calculated and the participant was labeled as a newly diagnosed hypertensive patient if the definition was met.

Medical conditions included self-reported chronic diseases (referred to as having a chronic condition from a predefined list), having a history of high cholesterol and a history of repeated chest pains. Diabetes status was based on HbA1c test cut-off measures. Participants with HbA1c levels below 6.5% were considered non-diabetic while those with HbA1c equal to or above 6.5% were considered as diabetic, according to the WHO criteria [20]. The overall prevalence of diabetes was based on both the self-reported status and the newly diagnosed diabetes during this survey. BMI values below 25 were considered normal, while values between 25 and 29.9 were classified as overweight, and BMI values of 30 and above indicated obesity.

Statistical analysis

Data coding, data cleaning, and analysis have been carried out by using IBM SPSS (Version 21.0, IBM SPSS, IBM Corp, Armonk, NY, USA) and Stata (Version 15, Stata Corporation, College Station TX). Frequencies and relative frequencies were reported for categorical variables. The Chi-square test of association was used to conduct bivariate analyses and study associations between categorical variables and the outcome variables (hypertension & pre-hypertension). Multivariate logistic regression analyses were used to identify significant sociodemographic and behavioral predictors of PHTN and HTN. The potential predictors were age, gender, BMI, occupation, smoking status, alcohol consumption and physical activity status. Odds Ratios (OR) were reported to reflect the strength of association. All the statistical tests were two-sided. The level of significance was set at 5% (p < 0.05) and accordingly, confidence intervals (CIs) were calculated with a 95% level. Complex weighted computation was used to report the weighted prevalence of HTN and PHTN.

Results

The total eligible sample included 2,530 adults (18 + years). Table 1 shows the weighted prevalence of HTN and PHTN according to demographic characteristics. The overall prevalence of HTN was 32.5% (38.37% in males and 16.66% in females). Prehypertension was prevalent in 29.8% of adults in Dubai (28.85% in males and 32.31% in females). A clear trend toward a greater prevalence of HTN was noted as age increased; however, the prevalence of PHTN was fluctuating among the age groups. Individuals aged 60 + were most likely to have hypertension (56.48%). Asians reported the highest frequency of HTN (34.69%). However, those from western countries & others had the highest frequency of PHTN (45.05%) among all other nationalities. Divorced and widowed individuals had a higher prevalence of both PHTN (38.45%) and HTN (40.37%) than other marital status categories, p-value < 0.001. Individuals who were currently working had significantly higher (44.06%) HTN, and among them skilled and service workers had the highest percentage (42.94). Individuals with less than secondary education had higher HTN (44.06%) than those with bachelor’s education and post-graduates. Using the univariate analysis, the prevalence of PHTN and HTN was significantly different within different age groups, gender, nationality groups, marital status, educational attainments, and occupations (all p-values < 0.001). Table 2 showed the descriptive univariate analysis for medical conditions associated with PHTN and HTN among the participants. Self-reported histories of certain chronic disorders like high blood cholesterol levels, chest pain, diabetes mellitus (both self-reported and measured), and the measured BMI disorders were all significantly associated with PHTN and HTN, (P < 0.001). Hypertensive subjects reported other chronic diseases, high cholesterol levels, and chest pain. Among diabetics in this survey, 61.38% had HTN, and 55.85% of obese individuals had HTN.

Table 1

Prevalence of PHTN and HTN among Dubai population according to socio-demographic characteristics

Characteristics

Prevalence %

^p-value

Normo-tensive

PHTN

HTN

Age group

18–29

49.13

30.98

19.89

< 0.001

30–39

39.97

29.95

30.08

40–49

33.16

28.41

38.42

50–59

18.20

27.90

53.90

60+

11.25

32.27

56.48

Gender

Females

51.03

32.31

16.66

< 0.001

Males

32.78

28.85

38.37

Marital Status

Single

48.69

30.12

21.19

< 0.001

Married

33.71

29.37

36.91

Divorced/separated/widowed

21.18

38.45

40.37

Nationality

UAE-Nationals

42.26

32.59

25.15

< 0.001

Other Arabs

41.98

30.98

27.03

Asians

38.02

27.29

34.69

Western & others

27.93

45.05

27.02

Education level

Less than secondary

29.92

26.02

44.06

< 0.001

Completed secondary and high diploma

37.16

29.45

33.40

Bachelor degree or post-graduates

42.00

31.92

26.08

Occupation

Professionals

38.74

32.08

29.18

< 0.001

Skilled & service workers

30.28

26.78

42.94

Elementary or unskilled workers

40.39

27.98

31.63

Work status

Not currently working

40.52

32.92

26.57

< 0.001

 

Working

37.19

29.22

33.59

 

Total prevalence

37.71

29.79

32.50

 
^ χ2 test
Results are presented as weighted proportions for all the categorical variables.
HTN: Hypertension, PHTN: Prehypertension

Table 2

Medical conditions associated with PHTN and HTN among Dubai population

Characteristics

Prevalence %

^p-value

Normo-tension

PHTN

HTN

Self-reported chronic disease

No chronic diseases

41.36

31.70

26.94

< 0.001

Chronic diseases

13.82

17.36

68.82

History of high cholesterol

No Cholesterol

38.61

30.46

30.93

< 0.001

Cholesterol

32.37

25.82

41.81

Have diabetes#

No Diabetes

42.64

32.55

24.81

< 0.001

Have Diabetes

19.20

19.42

61.38

History of chest pain

No

37.89

30.23

31.88

< 0.001

Yes

32.21

16.16

51.63

BMI*

Normal

51.18

23.90

24.92

< 0.001

Overweight

37.29

25.23

37.48

Obese

30.43

13.75

55.82

^ χ2 test

#Diabetes here is diagnosed both by tests and the self-reported cases.
*BMI: Body Mass Index
HTN: Hypertension, PHTN: Prehypertension

The associations between behavioral risk factors and PHTN and HTN were shown in Table 3. Using univariate analysis, the current findings reflected that tobacco use, smoking status, passive smoking, eating adequate fruits and vegetable consumption, alcohol consumptions, being physically active, all showed significant statistical associations with the prevalence of PHTN and HTN among the Dubai population at the level of P < 0.001. Multivariate logistic regression analysis showed that occupations and being overweight were significantly associated with PHTN (compared to normotensive), as shown in Table 4. Age groups and gender were not significantly associated with PHTN. In terms of the current occupation of the participants, skilled and services workers had a higher risk of PHTN, compared to the reference group (professionals) [OR = 4.28 (95% CI 1.80–10.17), OR = 2.12 (95% CI 1.13–4.02), respectively]. Individuals with a status of overweight associated with a higher prevalence of PHTN compared to the normal weighted [OR = 2.01 (95% CI 1.03–3.92)], while obesity was not associated with PHTN. Correlates of HTN as compared to normotensive through multivariable logistic regression analysis were also shown in Table 4. Compared to the reference group (18–29 years), only people aged 50–59 years and those 60 + years had a greater correlation of developing HTN [OR = 3.35 (95% CI 1.04–10.85), OR = 7.59 (95% CI 7.13–8.07), respectively]. Males were five- times more likely to be hypertensive than females [OR = 5.02 (95% CI 1.61–15.64)]. Similar to PHTN, those who work in skilled and service works had a 4.62 times higher risk of HTN (95% CI 2.04–10.47), compared to the reference group (professionals). Being overweight carries 2.56 times the risk for HTN compared to normal-weight subjects (95% CI 1.32–5.00). In addition, obese subjects had a 5.47 times greater correlation of HTN compared to the same reference group (95% CI 2.57–11.64). Neither smoking nor alcohol drinking was correlated with the risk of developing HTN in the present sample. On the other hand, physically active individuals were less likely to develop HTN [OR = 0.51 (95% CI 0.29–0.92)], as expected.

Table 3

Behavioral risk factors associated with PHTN and HTN among Dubai population

Characteristics

Prevalence %

^p-value

Normo-tension

PHTN

HTN

Have used tobacco

No

38.28

30.41

31.31

< 0.001

Yes

35.40

27.31

37.29

Current smoking Status

No

42.58

15.97

41.45

< 0.001

Yes

34.51

28.71

36.78

Exposure to passive smoking

No

36.72

30.20

33.08

< 0.001

Yes

44.22

27.06

28.72

Adequate fruits and vegetables consumption

No

38.84

29.24

31.92

< 0.001

Yes

35.31

30.94

33.75

Drinking alcohol

No

38.45

30.37

31.19

< 0.001

Yes

34.48

27.63

37.89

Physically active

No

37.51

29.59

32.90

0.000

Yes

13.53

31.88

54.59

^ χ2 test HTN: Hypertension, PHTN: Prehypertension

Table 4

Logistic regression analysis for correlates of PHTN compared to normotensive and HTN compared to normotensive

Characteristics

PHTN

HTN

OR (95% CI)

P value

OR (95% CI)

P value

Age group (Years)

 

18–29

Reference group

 

Reference group

 

30–39

1.34 (0.67–2.72)

0.40

2.11 (0.98–4.27)

0.30

40–49

1.28 (0.58–2.85)

0.53

1.51 (0.69–3.35)

0.08

50–59

2.33 (0.68–7.99)

0.17

3.35 (1.04–10.85)

< 0.05

60+

2.33 (0.34–2.87)

0.34

7.59 (7.13–8.07)

< 0.001

Gender

 

Female

Reference group

 

Reference group

 

Male

1.72 (0.71–4.18)

0.22

5.02 (1.61–15.64)

< 0.001

Occupation

 

Professionals

Reference group

 

Reference group

 

Skilled & service workers

4.28 (1.80-10.17)

< 0.001

4.62 (2.04–10.47)

< 0.001

Elementary/ unskilled workers

2.12 (1.13–4.02)

< 0.05

1.27 (0.70–2.33)

0.43

^BMI

 

Normal

Reference group

 

Reference group

 

Overweight

2.01 (1.03–3.92)

< 0.05

2.56 (1.32-5.00)

< 0.001

Obese

2.06 (0.90–4.69)

> 0.05

5.47 (2.57–11.64)

< 0.001

Smoking status

 

No

Reference group

 

Reference group

 

Yes

1.05 (0.45–2.48)

0.89

1.07 ( 0.49–2.42)

0.85

Alcohol consumption

 

No

Reference group

 

Reference group

 

Yes

0.99 (0.53–1.88)

0.99

1.71 (0.96–3.06)

0.70

Physically active

 

No

Reference group

 

Reference group

 

Yes

0.97 (0.55–1.74)

0.93

0.51 (0.29–0.92)

< 0.05

^ BMI, Body Mass Index; OR, odds ratio; CI, confidence interval at 95%; p-value < 0.05.
@ The reference category is normotensive.
# Parameter is set to zero because it is redundant
HTN: Hypertension, PHTN: Prehypertension

Discussion

Prevalence of PHTN and HTN

The current findings highlighted a significant burden of both PHTN and HTN in the studied population. The present findings showed that the prevalence of PHTN was 29.8%, which was similar to the figures reported elsewhere [14, 16, 21, 22]. However, this result was lower than the figures reported in the neighboring Arabian Gulf countries (37.4%, 45%, and 54.9% in Bahrain, Oman, and Saudi Arabia, respectively) [2325]. Regarding the prevalence of HTN, the present data also revealed that it affects about one-third (32.5%) of adults in Dubai. This is comparable to the results from other countries worldwide [12, 2628]. Our prevalence lies within the range of HTN reported in the Gulf States (26.1%, 34%, and 37% in Saudi Arabia, Oman, and Kuwait, respectively) [24, 29, 30]. The differences observed in the prevalence between the Dubai population and other studies with respect to PHTN and HTN could be attributed to dietary and lifestyle factors, cultural and social differences, and the adopted research methodologies. It is worth mentioning that, the proportion of adults with HTN in Dubai was higher than the national average for the UAE of 28.8% [31]. This might be due to the slightly different demographics and dynamics of the population of Dubai compared to the other Emirates [32].

Risk Factors Associated with PHTN and HTN

In the current survey, the logistic regression analysis showed that age, gender, occupation, and BMI were significantly associated with the risk of having HTN. However, physical activity was shown as a protective factor. At the same time, occupation and BMI were the only associated factors with PHTN. The current findings showed that advanced age was associated with an increased risk of HTN. Almost all the studies carried out in different populations had shown a somehow consistent increase in BP with aging [2128]. Vascular abnormalities might contribute to the high prevalence of HTN in the elderly [33].

Data from the survey revealed a huge gender gap in HTN prevalence between males and females in Dubai. Males were found to be five times more likely to be hypertensive than females. Other studies have confirmed these findings [2125, 30]. The gender differences in hypertension are mainly due to biological factors including sex hormones that keep lower levels of HTN in women, among other factors [3436]. Behavioral risk factors, including high BMI, smoking, alcohol consumption, and physical inactivity, differ in complex ways between males and females as they play some protective effects in women [26, 3436]. In addition, women utilize healthcare services more frequently which could have a positive effect on controlling diseases like HTN [27, 34].

The present study showed that being overweight was associated with both PHTN and HTN. However, obesity was proven only as a risk factor for HTN within our population. This can be explained by the fact that obese individuals could progress quickly to the actual HTN from the PHTN status [37]. It is worth noting that, 62.1% of adults in Dubai are either overweight or obese (41.3%, 20.8%, respectively) [17]. International studies revealed a direct association between increased BMI and HBP and identified obesity as a major risk factor for HTN and PHTN [2429]. The mechanisms by which obesity contributes to the development of HTN including insulin resistance among other pathophysiological changes [38, 39].

Compared to professionals, skilled and service workers endured a higher risk for both PHTN and HTN within the current population. The influence of occupation as a predictor for high BP has rarely been stated in other studies [26, 30, 40]. Given that there are some variations in the definitions of the occupational categories among different studies, contradictory findings have been reported regarding this association [14, 41]. Similar to the present results, service occupations had a significantly increased prevalence of HTN [41, 42]. However, other studies found that unskilled workers were found to have more HTN than professionals and managerial ones [43, 44]. The difference in job strains, work environment, and levels of decision-making are among the factors that underlie the differences in HTN prevalence by occupations [45].

In the current study, physical activity was significantly inversely associated with the risk of developing HTN. Consistent evidence from research has endorsed the favorable effects of exercise and physical activities on the control of BP and prevention of HTN [14, 15, 46, 47]. Still, there are many unaddressed questions in the nature of the association between physical activity and prevention of HTN in terms of the types, levels and duration of physical activity needed, particularly in high-risk individuals [46].

Unexpectedly, the current findings showed that smoking and alcohol drinking was not associated with PHTN and HTN within the population of Dubai. Our results were not in agreement with other studies [14, 26, 48], since some existing evidence shows that smoking and alcohol drinking were among the risk factors for high BP. The discrepancy between our results and other studies might be explained by the existence of a social stigma attached to smoking and alcohol drinking, especially among females in the Arab region. Therefore, smoking and alcohol drinking could be underreported among the Dubai population [49].

This study has few limitations. First, the survey used data derived from both self-reports and physical measurements. The information collected on a self-reported basis is subjected to some form of bias. Subjectivity, underwriting, or misreporting associated with self-reporting cannot be ignored. A second limitation is that the survey did not collect some important variables such as the family history of HTN, salt and dietary intake of the studied population. Finally, as this survey used a cross-sectional design, the cause and effect relationship could not be established. Despite the above limitations, the strength of this study lies in that it is based on a population survey, which allows a representative population sample. In addition, the current study is the first study to shed light on the prevalence of PHTN and HTN and their correlates at the population level in the emirate of Dubai.

Conclusions

This is the first study to look at PHTN and HTN among adults in Dubai. The current findings demonstrated that both PHTN and HTN are prevalent among Dubai adults. Clearly, males are at higher risk of having HTN than females. Advanced age is identified to be an independent risk factor for both PHTN and HTN. Further findings showed that overweight, obesity, and occupations significantly predicted the odds of HTN. On the other hand, physical activity was a protective factor from HTN. Therefore, to decrease the burden of PHTN and HTN, early lifestyle modifications including reducing behavioral risk factors might be necessary to prevent the conversion from PHTN to HTN. This can be achieved through improvements in the screening measures and the application of community-based screening services for the early detection of PHTN as well as HTN. Developing and applying a screening tool, such as the cardiovascular risk score, at the primary health care level to detect the high-risk population is recommended. Programs directed at raising the awareness of the community towards the prevention strategies and the health implications of HTN and PHTN are necessary. Developing community initiatives/programs such as food labeling, nutrition interventions, and physical activity programs could be considered as good measures towards the control of BP and its associated cardiovascular risk reduction. Multispectral stakeholder’s engagement in these programs at different levels is essential. Well-designed future studies are needed to assess the direct association between the different occupation styles, dietary patterns, and types and patterns of physical activity, and the BP status.

Abbreviations

BMI

Body Mass Index,

BP

Blood Pressure,

CI

Confidence Intervals

DHA

Dubai Health Authority,

DHHS

The Dubai Household Health Survey,

DBP

Diastolic Blood Pressure,

HTN

Hypertension,

OR

Odds Ratios,

PHTN

Prehypertension,

SBP

Systolic Blood Pressure,

WHO

World Health Organization

Declarations

Ethics approval and consent to participate

Ethical standards were applied throughout this study as per Dubai Health Authority guidelines and regulations. Dubai Scientific Research Ethics Committee, Dubai Health Authority, approved this study (DSREC-GL03-2021). All participants provided written informed consent as well as verbal informed consent to take part in the study. 

Consent for publication 

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Availability of data and materials

The data that support the findings of this study are from the Dubai Health Authority. However, restrictions apply to the availability of these data; thus, these data are not publicly available. Data are available from the corresponding author upon responsible request with permission from the Dubai Health Authority.

Funding

This research paper did not receive any specific grant from funding agencies in the public, commercial or nonprofit sectors.

Authors’ contributions

H.M. designed the study, drafted the manuscript text, and interpreted the results. W.A. assisted in writing and reviewing the manuscript. H.H. assisted in writing and reviewing the manuscript. G.I. performed the statistical analysis and prepared the tables. A.H. reviewed the statistical analysis and edited the manuscript. I.M. reviewed the statistical analysis. N.S. reviewed the manuscript. All authors reviewed the manuscript.

Acknowledgments

The research team would like to express their appreciation and gratitude to the team of Dubai Statistics Centre for their significant contribution to the DHHS.

References

  1. Kearney PM, Whelton M, Reynolds K, Muntner P, Whelton PK, He J. Global burden of hypertension: analysis of worldwide data. Lancet. 2005 Jan 15;365(9455):217–23.
  2. Kim SJ, Lee J, Jee SH, Nam CM, Chun K, Park IS, Lee SY. Cardiovascular risk factors for incident hypertension in the prehypertensive population. Epidemiol Health. 2010;32.
  3. WHO. Fact Sheets: Hypertension [Internet]. Who.int. 2021 [Accessed 10 May 2021]. Available from: https://www.who.int/news-room/fact-sheets/detail/hypertension
  4. Mills KT, Bundy JD, Kelly TN, Reed JE, Kearney PM, Reynolds K, Chen J, He J. Global disparities of hypertension prevalence and control: a systematic analysis of population-based studies from 90 countries. Circulation. 2016 Aug 9;134(6):441–50.
  5. Al-Said J. The prevalence of hypertension in Persian Gulf countries and its correlation with demographic and socio-economic factors. J Hypertens. 2005 Jun 1;23(6):1275-7.
  6. Musaiger AO, Al-Khalifa F, Al-Mannai M. Obesity, unhealthy dietary habits and sedentary behaviors among university students in Sudan: growing risks for chronic diseases in a poor country. Environ Health Prev Med. 2016 Jul;21(4):224–30.
  7. Rahman M, Zaman MM, Islam JY, Chowdhury J, Ahsan HN, Rahman R, Hassan M, Hossain Z, Alam B, Yasmin R. Prevalence, treatment patterns, and risk factors of hypertension and pre-hypertension among Bangladeshi adults J Hum Hypertens. 2018 May;32(5):334–48.
  8. Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo Jr JL, et.al. Seventh report of the joint national committee on prevention, detection, evaluation, and treatment of high blood pressure. Hypertens. 2003 Dec 1;42(6):1206-52.
  9. Vasan RS, Larson MG, Leip EP, Kannel WB, Levy D: Assessment of frequency of progression to hypertension in non-hypertensive participants in the Framingham Heart Study: a cohort study. Lancet 2001; 358:1682–1686.
  10. Assadi F. Prehypertension: a warning sign of future cardiovascular risk. Int J Prev Med. 2014 Mar;5(Suppl 1):S4.
  11. World Health Organization. A global brief on hypertension: silent killer, global public health crisis: World Health Day 2013. World Health Organization; 2013.
  12. Yang G, Ma Y, Wang S, Su Y, Rao W, Fu Y, Yu Y, Kou C. Prevalence and correlates of prehypertension and hypertension among adults in Northeastern China: a cross-sectional study. Int J Environ Res Public Health. 2016 Jan;13(1):82.
  13. Do HT, Geleijnse JM, Le MB, Kok FJ, Feskens EJ. National prevalence and associated risk factors of hypertension and prehypertension among Vietnamese adults. American journal of hypertension. 2015 Jan 1;28(1):89–97.
  14. Waters E, Doyle J. Systematic reviews of public health in developing countries are in train. BMJ 2004 Mar 4;328(7439):585.
  15. Ibekwe RU. Modifiable risk factors of hypertension and socio demographic profile in Oghara, Delta state; prevalence and correlates. Ann Med Health Sci Res. 2015 Feb 4;5(1):71–7.
  16. The Seven Emirates - The Official Portal of the UAE Government [Internet]. 2021 [Accessed 1 March 2021]. Available from: https://u.ae/en/about-the-uae/the-seven-emirates.
  17. Dubai Health Authority. Dubai Household Health Survey. 2021 [Accessed 1 March 2021]. Available from: https://www.dha.gov.ae/Documents/opendata/English_DDHS.pdf.
  18. International Standard Classification of Occupations [Internet]. Ilo.org. 2012 [Accessed 10 May 2021]. Available from: https://www.ilo.org/wcmsp5/groups/public/---dgreports/---dcomm/---publ/documents/publication/wcms_172572.pdf
  19. Physical activity [Internet]. Who.int. 2020 [Accessed 13 May 2021]. Available from: https://www.who.int/news-room/fact-sheets/detail/physical-activity
  20. Wild S, Roglic G, Green A, Sicree R, King H. Global prevalence of diabetes: estimates for the year 2000 and projections for 2030. Diab care. 2004 May 1;27(5):1047-53.
  21. Silva DA, Petroski EL, Peres MA. Prehypertension and hypertension among adults in a metropolitan area in Southern Brazil: Population-based study. Revista de Saude Publica. 2012;46:988–98.
  22. Hu L, Huang X, You C, Li J, Hong K, Li P, Wu Y, Wu Q, Bao H, Cheng X. Prevalence and risk factors of prehypertension and hypertension in Southern China. PloS one. 2017 Jan 17;12(1):e0170238.
  23. Otayn BI, Hassan Z, Khonji A, Khonji F, Al Jasem D, Saleh SM, Prevalence of prehypertension and the near term risk of developing hypertension among Arabian Gulf University medical students in the Kingdom of Bahrain for the year 2011–2012. World J Pharm Research. 2018; 7 (14): 303–19.
  24. Al-Maqbali AA, Temple-Smith M, Ferler J, Blackberry I. Prevalence and determinants of pre-hypertension among Omani adults attending non-communicable disease screening program in primary care setting in Sohar city. Oman Med J. 2013 Sep;28(5):316.
  25. Aldiab A, Shubair MM, Al-Zahrani JM, Aldossari KK, Al-Ghamdi S, Househ M, Razzak HA, El-Metwally A, Jradi H. Prevalence of hypertension and prehypertension and its associated cardioembolic risk factors; a population based cross-sectional study in Alkharj, Saudi Arabia. BMC Public Health. 2018 Dec;18(1):1–9.
  26. Singh S, Shankar R, Singh GP. Prevalence and associated risk factors of hypertension: a cross-sectional study in urban Varanasi. Int J Hypertens. 2017 Oct;2017.
  27. Tabrizi JS, Sadeghi-Bazargani H, Farahbakhsh M, Nikniaz L, Nikniaz Z. Prevalence and associated factors of prehypertension and hypertension in Iranian population: the Lifestyle Promotion Project (LPP). PloS one. 2016 Oct 26;11(10):e0165264.
  28. Rana J, Oldroyd J, Islam MM, Tarazona-Meza CE, Islam RM. Prevalence of hypertension and controlled hypertension among United States adults: Evidence from NHANES 2017-18 Survey. Int J Cardiol Hypertens. 2020 Dec 1;7:100061.
  29. Al-Nozha MM, Abdullah M, Arafah MR, Khalil MZ, Khan NB, Al-Mazrou YY, Al-Maatouq MA, Al-Marzouki K, Al-Khadra A, Nouh MS, Al-Harthi SS. Hypertension in Saudi Arabia. Saudi Med J. 2007 Jan 1;28(1):77.
  30. Channanath AM, Farran B, Behbehani K, Thanaraj TA. State of diabetes, hypertension, and comorbidity in Kuwait: showcasing the trends as seen in native versus expatriate populations. Diab Care. 2013 Jun 1;36(6):e75-.
  31. UAE NATIONAL HEALTH SURVEY REPORT 2017–2018 [Internet]. Dubai, UAE; 2019 [Accessed 14 May 2021]. Available from: https://www.mohap.gov.ae/Files/MOH_OpenData/1556/UAE_NHS_2018.pdf
  32. Demographics of Dubai. [Accessed 1 March 2021]. Available from: https://en.wikipedia.org/wiki/Demographics_of_Dubai
  33. Lionakis N, Mendrinos D, Sanidas E, Favatas G, Georgopoulou M. Hypertension in the elderly. World J Cardiol. 2012 May 26;4(5):135.
  34. Everett B, Zajacova A. Gender differences in hypertension and hypertension awareness among young adults. Biodemography Soc Biol. 2015 Jan 2;61(1):1–7.
  35. Sandberg K, Ji H. Sex differences in primary hypertension. Biol Sex Differ. 2012 Dec;3(1):1–21.
  36. Vitale C, Fini M, Speziale G, Chierchia S. Gender differences in the cardiovascular effects of sex hormones. Fundam Clin Pharmacol. 2010 Dec;24(6):675–85.
  37. Recio-Rodriguez JI, Gomez-Marcos MA, Patino-Alonso MC, Agudo-Conde C, Rodriguez-Sanchez E, Garcia-Ortiz L. Abdominal obesity vs general obesity for identifying arterial stiffness, subclinical atherosclerosis and wave reflection in healthy, diabetics and hypertensive. BMC Cardiovasc Disord. 2012 Dec;12(1):1–8.
  38. Jayedi A, Rashidy-Pour A, Khorshidi M, Shab‐Bidar S. Body mass index, abdominal adiposity, weight gain and risk of developing hypertension: a systematic review and dose–response meta‐analysis of more than 2.3 million participants. Obes Rev. 2018 May;19(5):654–67.
  39. DeMarco VG, Aroor AR, Sowers JR. The pathophysiology of hypertension in patients with obesity. Nat Rev Endocrinol. 2014 Jun;10(6):364.
  40. Landsbergis PA, Diez-Roux AV, Fujishiro K, Baron S, Kaufman JD, Meyer JD, Koutsouras G, Shimbo D, Shrager S, Stukovsky KH, Szklo M. Job strain, occupational category, and hypertension prevalence: the Multi-Ethnic Study of Atherosclerosis. Occup Environ Med. 2015 Nov;57(11):1178.
  41. Gilbert-Ouimet M, Trudel X, Brisson C, Milot A, Vézina M. Adverse effects of psychosocial work factors on blood pressure: systematic review of studies on demand-control-support and effort-reward imbalance models. Scand J Work Environ Health. 2014 Mar 1:109–32.
  42. Davila EP, Kuklina EV, Valderrama AL, Yoon PW, Rolle I, Nsubuga P. Prevalence, management, and control of hypertension among US workers: does occupation matter? Occup Environ Med. 2012 Sep 1;54(9):1150-6.
  43. Colhoun HM, Hemingway H, Poulter NR. Socio-economic status and blood pressure: an overview analysis. J Hum Hypertens. 1998 Feb;12(2):91–110.
  44. Keenan NL, Rosendorf KA, Centers for Disease Control and Prevention (CDC). Prevalence of hypertension and controlled hypertension—United States, 2005–2008. MMWR Surveill Summ. 2011 Jan 14;60(Suppl):94 – 7.
  45. Babu GR, Jotheeswaran AT, Mahapatra T, Mahapatra S, Kumar A, Detels R, Pearce N. Republished: is hypertension associated with job strain? A meta-analysis of observational studies. Occup Environ Med. 2014 Mar;71(3):220–7.
  46. Diaz KM, Shimbo D. Physical activity and the prevention of hypertension. Curr Hypertens Rep. 2013 Dec 1;15(6):659 – 68.
  47. Carey R, Muntner P, Bosworth H, Whelton P. Prevention and control of hypertension: JACC Health Promotion Series. J Am Coll Cardiol.2018 Sep 11;72(11):1278-93.
  48. Rajkumar E, Romate J. Behavioural Risk Factors, Hypertension Knowledge, and Hypertension in Rural India. Int J Hypertens.2020 Mar 9;2020.
  49. Jarallah JS, Al-Rubeaan KA, Al-Nuaim AR, Al-Ruhaily AA, Kalantan KA. Prevalence and determinants of smoking in three regions of Saudi Arabia. Tobacco control. 1999 Mar 1;8(1):53–6.