Epidemiological and Clinical Characteristics of Headache Among Medical Students in Palestine : A cross Sectional Study

doi:10.21203/rs.3.rs-806338/v1

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Epidemiological and Clinical Characteristics of Headache Among Medical Students in Palestine : A cross Sectional Study

https://doi.org/10.21203/rs.3.rs-806338/v1

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published 03 Jan, 2022

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Background

Headache is one of the most disturbing complaints worldwide, negatively impacting social and regular life activities.In the background of stressful life in medical schools, adding to the stressful situation in Palestine, a developing country under occupation, this study investigated the prevalence and clinical characteristics of migraines and tension headaches among medical students from the Palestinian Universities in West Bank and Gaza

Methods:

A questionnaire-based cross-sectional study was conducted on all Palestinian Medical Students. Students were diagnosed based on ICHD-3 criteria. Demographic characteristics were compared by gender for each type of headache. Frequency, percentage, and mean ± SD. Pearson's chi-squared test, independent t-test, and one-way ANOVA were used where needed. P-value < 0.05 was considered significant.

Results:

The study included 806 medical students; 476 (59.0%) of them were female. TTH and migraine's prevalence was 59.8% and 22%, respectively, with a higher prevalence among basic year students. The female to male ratio was 1:0.6 for both types of headaches. Sleep deprivation, physical activities, and altered sleep patterns were reported as the top triggering factors.

Conclusions

The results demonstrate that the prevalence of both subtypes' primary headache is high among Palestinian medical students, with a higher prevalence among basic year students.

The study also showed that these findings are higher than other studies among medical students in other countries.

Neurology

Tension headache

Migraine

Medical schools

Stress

Palestine

According to estimates, 50% of adults experience at least one headache per year.[1] At students' level, headache interferes with their academic, social, and personal lives.[2] Medical students, in particular, have been the focus of attention in the previous headache studies [3–5], especially with the enormous academic load and stress they encounter during medical school.[6]

This study aims to evaluate the prevalence and clinical characteristics of primary headaches (Migraine and Tension-type headache (TTH)) in all medical schools in Palestine, both in Gaza and West Bank, and the relieving methods used by medical students to alleviate their suffering.

Study design and population

This study utilized a cross-sectional design and took place between March 25 and June 25, 2019. It drew students from all Palestinian universities with medical schools located in the West Bank and Gaza. The Institutional Review Board approved the study.

Data Collection

The authors collected data using an Arabic-language self-administered questionnaire. The questionnaire was designed in accordance with the third edition of the International Classification of Headache version 3. (ICHD-3).[7] It consisted of 28 items divided into six sections, and the questions varied between closed- and open-ended questions, Likert scales (Always, usually, often, sometimes & never), and visual analog.

The first section included demographic data: age, gender, medical year, marital status, university, self-reported academic performance (excellent, very good, good), and self-reported weight and height. Next, BMI was calculated and classified using WHO criteria (underweight, normal, overweight and obese).

The questionnaire assessed if students had any headache attack in their lifetime, medical school time, past year, and past three months in the second section depending on the second criterion for migraine and the first criterion for TTH. In the third section, it assessed the most approximate frequency (number of attacks per day, days per week, weeks per month, months per year), approximate attack duration in hours (drop list with 0.5, 1, 2...24 hours); depending on the second criterion for both migraine and TTH. Furthermore, it assessed the site, character, prodromal symptoms, and aura (visual disturbances or hallucinations, abnormal sensations, speech difficulty, language abnormalities, weakness, vertigo, or tinnitus): depending on the third and fourth criteria for both migraine and TTH. Family history (yes/no/unknown), and intensity which was represented as a visual analog scale and the scores converted later to levels (mild (0–3), moderate (4–6), severe (7–10)); depending on the third criterion for both migraine and TTH.

The fourth section addressed treatment and prevention strategies and a Likert scale (always, quite often, seldom, never) representing the students' preferred pain relief methods (sleep, caffeine, medications, shower, specific herbs, specific food). The fifth section discusses possible precipitating factors (sleep deprivation, stress, long study hours, physical activities, altered sleep pattern, exams, social events, specific sounds, specific smells, hunger, food, weather, colorful lights, menses, caffeine, financial difficulties, smoking, energy drinks). Finally, in the sixth section, students were asked how headache affects their daily life activities (study, routine life, hobbies, sleep, social life, and exam delay), which were also represented using a Likert scale.

The questionnaire provides a detailed review of all aspects required for the differential diagnosis of headache according to ICHD-3 [7]. Two neurologists and one internist reviewed the questionnaire's face and content to ensure that it contained all necessary components for diagnosis. Finally, the questionnaire was piloted with 30 medical students and revised as necessary.

The questionnaire was created online using Survey Monkey. On the first page of the questionnaire, informed consent has been requested. The questionnaire was distributed to students who consented. The link was emailed to all 1500 Palestinian medical students; 881 responded, a response rate of 58.7%. The proportion of respondents at each university is proportional to the number of medical students and the gender ratio at each university.

Diagnosis

The authors used ICHD-3 criteria to diagnose students on an individual basis. Based on ICHD-3 criteria, the authors classified the diagnosis as Migraine or TTH. Others had no headaches and "Unclassifiable Headache," which meant that none of the ICHD-3 criteria could be applied.

Statistical analysis

The study used IBM SPSS Statistics for Windows, version 21 to analyze the data (IBM Corp., Armonk, NY, USA). The descriptive section included frequency, percentage, and mean standard deviation. To determine the distribution of students with headaches by gender and headache characteristics, the authors used Pearson's chi-squared test, an independent t-test, and one-way ANOVA as needed. P-values less than 0.05 were considered statistically significant.

Characteristics of the participants

A total of 881 students consented to the questionnaire; 40 incomplete questionnaires were excluded from further study, alongside another 35 questionnaires from students previously diagnosed with secondary headache (15 sinusitis, 10 TMJ, nine vision problems, one pseudotumor cerebri). The students' net number was 806, with a female-to-male ratio of 1.4:1 proportional to the female-male rate in all Palestinian medical schools. The number of participants from each university is also proportional to each university's overall number in general and, specifically, medical students in that university. Table 1 shows the demographic characteristics of participants included in the study.

Table 1

Demographic characteristics of participants included in the study (n = 806)
	Total (%)	Male N = 330 (41%)	Female N = 476 (59%)
Age, mean ± SD (range)	21 ± 2 (9)	21 ± 2 (9)	21 ± 2 (9)
Marital Status
Single	771 (95.6)	323 (97.8)	448 (94.1)
Married	35 (4.30)	7 (2.10)	28 (5.80)
University
An-Najah National university	286 (35.4)	121 (36.6)	165 (34.6)
Al-Quds	201 (24.9)	69 (20.9)	132 (27.7)
Al-Islamiyah	169 (20.9)	77 (23.3)	92 (19.3)
Al-Azhar	150 (18.6)	63 (19.0)	87 (18.2)
Year
Basic	419 (51.9)	159 (48.1)	260 (54.6)
Clinical	387 (48.0)	171 (21.2)	216 (45.3)
Performance
Excellent	144 (17.8)	57 (17.2)	87 (18.2)
Very Good	416 (51.6)	175 (53.0)	241 (50.6)
Good	246 (30.5)	98 (29.6)	148 (31.0)
BMI
Underweight	66 (8.1)	16 (4.8)	50 (10.5)
Normal	522 (64.7)	182 (55.1)	340 (71.4)
Overweight	178 (22)	107 (32.4)	71 (14.9)
Obese	40 (4.9)	25 (7.5)	15 (3.1)

The prevalence of headache by gender

For the life-time prevalence of headache, 482 (59.8%) students [55.8% of males vs 62.6% females (P-value 0.051)] were diagnosed with TTH, while 177 (21.9%) students [19.4% of males vs 23.7% of females (P-value 0.141)] were diagnosed with migraine based on ICHD-3 criteria. In total, 75.2% of males had primary headache compared to 86.3% of females (P-value < 0.001).

Results showed that 273 (33.9%) students has TTH in the last year [29.4% of males vs 37.0% of females (P-value 0.025)] while it was 116 (14.4%) [21.1% of males vs 16.0% of females (P-value 0.126) for migraine. 48.3% of the students had primary headache in the last year; 41.5% of males compared to 52.9% of females (P-value 0.001) (Tables 2).

Table 2

The distribution of lifetime and last year prevalence of headache's types with gender
	All n (%)	Male n (%)	Female n (%)	P-value	OR (95%CI)
Life-Time
TTH	482 (59.8)	184 (55.8)	298 (62.6)	0.051	0.89 (0.79-1.00)
Migraine	177 (22)	64 (19.4)	113 (23.7)	0.143	0.81 (0.62–1.07)
Unclassifiable	75 (9.3)	44 (13.3)	31 (6.5)	0.001	2.0 (1.3–3.1)
Free	72 (8.9)	38 (11.5)	34 (7.1)	0.032	1.6 (1.03–2.5)
Primary	659 (81.8)	248 (75.2)	411 (86.3)	< 0.001	0.87 (0.81–0.93)
Last Year
TTH	273 (33.9)	97 (29.4)	176 (37)	0.025	0.79 (0.64–0.97)
Migraine	116 (14.4)	40 (21.1)	76 (16)	0.126	0.75 (0.53–1.08)
Unclassifiable	278 (34.5)	114 (34.5)	164 (34.5)	0.979	1.0 (.82-1.21)
Free	139 (17.2)	79 (23.9)	60 (12.6)	< 0.001	1.8 (1.4–2.57)
Primary	398 (48.3)	137 (41.5)	252 (52.9)	0.001	0.78 (0.67–0.91)

The prevalence of headache by demographics

The study's findings demonstrate that both the academic year and the university are related to the prevalence of TTH. TTH was most prevalent in clinical years (p = 0.017). Additionally, students at An-Najah university had the highest prevalence of TTH (65.8 percent) and the lowest prevalence of migraines. (0.02; p = 0.02) (Table 3).

Table 3

The prevalence of lifetime headache by age, sex, university, academic year, and performance
Variable	Migraine			TTH
Variable	Yes n (%)	NO n (%)	P-Value	Yes n (%)	NO n (%)	P-Value
Age, mean ± SD	21.1 ± 2.1	20.9 ± 2.1	0.492	21.1 ± 2.1	20.8 ± 2.1	0.027
Sex
Males	64 (36.1)	266 (42.2)	0.143	184 (38.1)	146 (45)	0.051
Female	113 (63.8)	363 (57.7)	0.143	298 (61.8)	178 (54.9)	0.051
Marital Status
Single	166 (93.7)	605 (96.8)	0.167	460 (95.4)	311 (95.9)	0.706
Married	11 (6.2)	24 (3.8)	0.167	22 (4.5)	13 (4)	0.706
University
An-Najah National university	52 (29.3)	234 (37.2)	0.083	196 (40.6)	90 (27.2)	0.002
Al-Quds	41 (23.1)	160 (25.4)		114 (23.6)	87 (26.8)
Al-Islamiyah	42 (23.7)	127 (20.1)		90 (18.6)	79 (24.3)
Al-Azhar	42 (23.7)	108 (17.1)		82 (17)	68 (20.9)
Year
Basic	92 (51.9)	327 (51.9)	0.998	234 (48.5)	185 (57)	0.017
Clinical	85 (48)	302 (48)	0.998	248 (51.4)	139 (42.9)	0.017
Academic Performance
Excellent	30 (16.9)	114 (18.1)	0.163	87 (18)	57 (17.5)	0.945
Very Good	102 (57.6)	314 (49.9)		250 (51.8)	166 (51.2)
Good	45 (25.4)	201 (31.9)		145 (30)	101 (31.1)
Family History
Yes	87 (49.1)	218 (34.6)	< 0.001	192 (39.8)	113 (34.8)	< 0.001
NO	55 (31)	206 (32.7)		175 (36.3)	86 (26.5)
Unknown	35 (19.7)	205 (32.5)		115 (23.8)	125 (38.5)

Headache characteristics

The study shows that the mean duration of a migraine attack was 6.0 ± 4.6 hours, significantly higher among females than male students (p = 0.019). The mean duration for the TTH attack was 3.2 ± 2.7 hours; there was no significant difference between male and female students (p = 0.059). The frequency of headache attacks per year for Migraine was 46.5 ± 61.2 (males: 41.7 ± 60.1, females: 49.2 ± 61.8), while 57.4 ± 69.6 (males: 49.3 ± 63.5, females: 62.2 ± 72.7) for TTH and 2.6 ± 3.4 (males: 2.2 ± 2, females: 3.1 ± 4.7) for Unclassifiable headache. Half of the students (50.2%) with Migraines and 63% of students with TTH experienced moderate attacks (Table 4).

Table 4

Students' migraine, TTH, and unclassifiable headaches characteristics with gender
		Male n (%)	Female n (%)	Total n (%)	P-value
Migraine	Duration mean ± SD	5.3 ± 4.4	6.5 ± 4.6	6.0 ± 4.6	0.019
	Episode Number mean ± SD	41.7 ± 60.1	49.2 ± 61.9	46.50	0.268
	Severity level
	Mild	1 (1.5)	22 (19.4)	23 (12.9)	0.053
	Moderate	41 (64)	48 (42.4)	89 (50.2)
	Severe	22 (34.3)	43 (38)	65 (36.7)
THH	Duration mean ± SD	2.9 ± 2.1	3.3 ± 3.0	3.2 ± 2.7	0.059
	Episode Number mean ± SD	49.3 ± 63	62.2 ± 72	57.4 ± 69	0.008
	Severity level
	Mild	41 (22.2)	47 (15.7)	88 (18.2)	0.052
	Moderate	112 (60.8)	192 (64.4)	304 (63)
	Severe	31 (16.8)	59 (19.7)	90 (18.6)
Unclassified headache	Duration mean ± SD	2.3 ± 0.8	2.3 ± 1.3	2.3 ± 1.0	0.937
	Episode Number mean ± SD	2.2 ± 2.1	3.2 ± 4.7	2.6 ± 3.5	0.131
	Severity level
	Mild	9 (20.4)	3 (9.6)	12 (16)	0.861
	Moderate	22 (50)	20 (64.5)	42 (56)
	Severe	13 (29.5)	8 (25.8)	21 (28)

Triggering factors

Sleep deprivation appeared to be a primary trigger for both migraines and TTH. Additional critical factors include physical activity, stress, and long study hours (Table 5).

Table 5

Distribution of Migraine and TTH triggering factors
Triggering Factors	Migraine	Rank	TTH	Rank
Sleep Deprivation	89.8%	1	88.5%	1
Physical activities	75.7%	3	82.7%	2
Stress	70.0%	4	81.1%	3
Long Study hours	70.0%	4	79.8%	4
Altered Sleep Pattern	80.2%	2	76.3%	5
Exam's Stress	66.1%	5	75.7%	6
Social Events	57.0%	8	58.7%	7
Hunger	59.8%	7	58.0%	8
Noise	61.5%	6	56.6%	9
Menstruation	38.5%	11	55.7%	10
Specific Weather	53.6%	10	47.0%	11
Colorful lights	54.8%	9	43.1%	12
Caffeine consumption	32.7%	13	37.7%	13
Money	32.7%	14	35.6%	14
Odors	38.4%	12	27.3%	15
Smoking	19.2%	15	20.9%	16
Energy Drinks	13.5%	17	17.0%	17
Specific Food	19.2%	16	16.1%	18

Relieving methods during an attack

The majority of students with migraines (87.1%) reported sleeping to alleviate their suffering, followed by medication (51.5%)—other methods, as seen in Fig. 2.

As early as 1903, JAMA released an editorial entitled 'Suicides of Physicians and the Reasons.' The study discovered that doctors are more likely than the general population to commit suicide, attributed to significant obstacles in the medical profession due to congestion and competition.[8] Data from the 2004 meta-analysis showed that the risk of suicide was 1.41 among male physicians and 2.27 among female physicians [9]. Several contributing factors, including stress, anxiety, and depression, appear early in medical school [10, 11]. Research has shown that stress can cause headaches [12]. A broad community-based study indicates that college students are at higher risk of a headache than the general population [13]. This research aims to establish the prevalence and clinical characteristics of both migraine and TTH among medical schools in Palestine.

The lifetime prevalence of primary headache (i.e., TTH & Migraine) was 81.8%. In detail, 482 (59.8% ) [184 (55.8% ) males and 298 (62.6%) females] and 177 (22%) patients, respectively, were diagnosed with TTH and Migraine. Females have a higher prevalence of migraines (23.7%) than males (19.4%). This corresponds to females' greater global dominance.[14] Females also have a higher prevalence of TTH in our study.

This study's overall prevalence was higher than those conducted in other developing countries; 46% in Nigeria,[15] 58.7% in Iran,[16] and 40% in Brazil.[17] Some countries showed an almost similar high lifetime prevalence of primary headaches, like Pakistan (87.8%) [18]. This raises concerns about this burden among the Palestinian population and particularly among the medical students in Palestine. As an occupied territory, Palestine is faced with a unique focus of the ongoing Israeli occupation. Medical students cannot return to their homes every day due to Israeli checkpoints and cross-border travel. They must live alone with colleagues in some apartments that lack several basic amenities, contributing to an increase in tension and potential psychosocial strain.

For various forms of headache, TTH was more prevalent in this research than migraine, which is consistent with results from another study in Iran [16]. When compared to other studies conducted on medical students, it was higher than the prevalence in Nigeria (18.1%), [15] Iran (44.2%),[16] and Nairobi (50%).[19] In Brazil, they reported a lower prevalence of TTH (75.7%) compared to migraine.[17] In comparison, migraine prevalence in this study was lower than in some countries,[3, 19] yet higher than the majority in Soochow (7.91%),[20] Iran (14.2%), [16] Nigeria (6.4%), [15] and Turkey (12.6%).[21] Even though differences in methodology or participation proportion can explain these differences, they are still very high.

Our findings indicate that TTH is significantly higher in clinical years than in primary years. This could be because clinical years are stressful, with extended study hours, higher passing scores, and frequent and interrupted travel between clinical sites.

This study shows a 49.1% positive family history among migraine cases, which is higher than the association reported in previous studies, such as those conducted in India (31%) and Nigeria (22%). [15, 22] The age-standardized average for headaches in Palestine is 16702 per 10000 and 32495 per 100,000 for migraine and TTH, respectively, with the highest percentage shift in counts in the EMR region after Pakistan. [23] Higher rates of depression and anxiety play a significant role in Palestine than the rest of the world [24]. Stressful life events such as persistent conflict can also lead to a higher burden of headaches. Despite that family history was self-reported, this high percentage and the elevated age-standerized average for headaches encourage us to implement a screening program for the Palestinian population.

In the present study, most migraine students suffered from moderate to severe headaches, consistent with other studies [3, 25]. At the same time, most of the TTH students suffered from a moderate headaches. This should urge the universities' officials to implement relieving strategies among this group and guidance about stress-relieving methods.

As shown in this study, females have a higher prevalence of TTH and tend to have more frequent episodes throughout their lives, consistent with literature [23]. The nature of both genders could explain this difference and hormonal differences. In addition to this, lack of sleep was the most frequent trigger of both TTH and Migraine, consistent with the findings of studies conducted in China [20] and Kuwait [3]. This is a sensible finding because of the considerable study load and limited study hours during med school. Students here can be guided by their seniors on how to organize their study schedule during the day in a way that secures enough sleeping hours for them.

This study is one of few studies focusing on both Migraine and TTH in medical students, and it is the first study covering all medical schools in Palestine. In addition to the recall bias, the low participation proportion dictated by using email for data collection is the main limitation of this study. Since the West Bank and Gaza are under Israeli military control, the email was chosen because of restricted alternatives. Limited cooperation between Palestinian universities, on the other hand, restricts our ability to train data collectors at each university. The online form was supposed to be comfortable and user-friendly. Still, many students who erroneously exit the document could not re-enter the form because we restricted the form's usability to only one time per computer to prevent multiple responses, and their responses were considered incomplete. As far as the Palestinian community is concerned, we have been interested in medical students in their lack of research on Palestinian students' encounters and related symptoms.

In conclusion, this study assessed the prevalence of both Migraine and TTH and its characteristics among Palestinian medical students and found it very high compared to many previous studies among Medical students. Since these results can't be generalized, further research should be conducted to determine the prevalence of headaches and their subtypes among the Palestinian population and all university students to compare them with the medical students. A validation study for the questionnaire is recommended to be used for clinical and research purposes.

Ethics approval and consent to participate:

All procedures performed in this study involving human participants complied with the institutional and/or national research committee ethical standards and the 1964 Helsinki declaration and subsequent amendments or equivalent ethical standards. The study was designed and conducted in accordance with the ethical principles established by An-Najah National University. Therefore, ethical approval was obtained from the Institutional Review Board Committee, Faculty of Medicine, and An-Najah National University (Ref: Med.Oct.2018/51). All participants consent to participate in the survey prior to the survey beginning; confidentiality and privacy were guaranteed.

Consent for publication:

Not applicable

Availability of data and materials:

The data used to support the findings of this study are available from the corresponding author upon request.

Competing interests:

The authors declare that they have no competing interests.

Funding:

This project did not receive any financial funding throughout all stages of the project. No grant of any kind was obtained to plan the project, data collection, data analysis, the writing of the manuscript, or submitting the manuscript.

Authors' contributions:

FA, WA and ZN participated in conceptualization of the research idea, goal, and aims and study design, supervised data collection, data analysis, manuscript writing. FA, WA, and FH performed the material preparation, data collection, and analysis. All authors interpreted the results. ZN and BM wrote the first draft of the manuscript, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Acknowledgements:

The authors extend their sincere appreciation and gratitude to all participants in the study. Such research would not have been possible without the help of the An-Najah National University, the Faculty of Medicine and Health Sciences.

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No competing interests reported.

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Epidemiological and Clinical Characteristics of Headache Among Medical Students in Palestine : A cross Sectional Study

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Abstract

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Introduction:

Subjects And Methods:

Study design and population

Data Collection

Diagnosis

Statistical analysis

Results

Characteristics of the participants

The prevalence of headache by gender

The prevalence of headache by demographics

Headache characteristics

Triggering factors

Relieving methods during an attack

Discussion

Conclusion

Declarations

References

Additional Declarations

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