Maternal anemia remains a major problem in rural area of East Lombok, Indonesia. During this COVID-19 pandemic decrease in household income and food expenditure were observed, along with medium-to-high coping strategies in half of the households. Chronic energy deficiency, inadequate dietary diversity, and non-use of contraception were significant determinants of anemia among pregnant mothers in the district.
The current study showed that the prevalence of maternal anemia was 40.8%, and is classified as severe public health issue by the WHO [2]. The proportion of anemia demonstrated by this study is lower than the national prevalence (48.9%) [6], yet higher than the global average of 36.5% [24]. While anemia prevalence remains high, this figure suggests reduction over the past two decades since study conducted in 2001 amongst pregnant mothers in the third trimester in Lombok which showed anemia prevalence of 60% [25].
The proportion of CED in our study was 10.5%, which was lower than the national average of 17.3% and the sub-national rate in East Lombok of 20.2%. In terms of the high proportion of WRA with CED, our study area i.e., NTB Province ranks eighth out of 34 provinces in Indonesia, indicating that maternal malnutrition remains a major public health concern [26]. Our study found that pregnant women with CED were 1.8 times more likely to develop anemia. This was in agreement with a case-control study conducted in West Ethiopia that reported higher odds of anemia among pregnant women with a MUAC of less than 23 cm (AOR = 3.42; 95% CI: 2.07, 5.63) [27]. Malnutrition during pregnancy may be caused by poor dietary intake [4], low pre-pregnancy BMI (< 18.5 kg/m2) [28], accompanied by infections and infestations, which is common in LMICs [29]. In our study we found that worm infestation was relatively low therefore the CED was likely due to inadequate nutrient intake rather than infection.
The present study found that 28% of the pregnant women had inadequate dietary diversity which was associated with a higher odd of anemia, and this is concurrent with the findings in developing countries [46]. The typical diets of pregnant women in rural areas of East Lombok should also be underlined, which consist of rice, legumes (e.g., tempeh, tofu), and locally grown vegetables or fruits. Such predominantly plant-based diets are poor sources of bioavailable iron, in addition to the high content of iron-absorption inhibitors (e.g., phytate and polyphenols) [30]. The consumption of meat, poultry, and fish which are protein-dense foods rich in heme iron [31], was reported to be low among pregnant women with low sociodemographic and economic status [32]. Correspondingly, animal source foods (ASFs) are often consumed at special family or public gatherings (e.g., ceremony, Eid al-Adha festival, etc) since it is regarded as a delight rather than a pivotal component of the regular family diet in predominantly rural areas [33]. This may have been due to ASFs are costly and unaffordable, especially for those with low socioeconomic status [31]. Accordingly, we found that more than one-third of participants owned livestock (e.g., poultry, cows, goats, buffalo, and/or fish ponds). However, ownership of these farm assets did not translate into consumption, given that ASFs consumption among pregnant women remained low i.e. 30% of them did not consume animal protein in the past 24 hours. The findings of our study indicate the importance of health and nutrition education aimed at mothers in order to promote dietary diversity and adequate dietary intake [34].
In our study, women who utilized contraception prior to pregnancy have a lower risk of anemia, which is in line with previous research [27]. Contraception use is critical for maternal and child survival since it assists in optimal birth spacing and the prevention of unintended pregnancies [35]. According to the 2017 Indonesia DHS, contraceptive use (all methods) has only slightly increased from 62% in 2012 to 64% in 2017 [36]. Approximately 40% study participants had not used any kind of contraception prior to their current pregnancy, which could be explained by young and first-time mothers. In Indonesia, the trend for modern contraceptive use, among married women increased with age (most users are aged 35–39), multiparity (3–4 live births), and a quintile lower middle-class wealth [36]. Additionally, data from East Lombok statistics office showed that contraceptive users decrease with wealth i.e. 78%, 76% and 65% in bottom 40, middle 40 and top 20 percentile, respectively [37]. Half (52%) of our study subjects received government poverty alleviation programs which consist of conditional cash transfers and/or food aid. During the COVID-19 pandemic, government of Indonesia under Program Keluarga Harapan (PKH Program) provided conditional cash money for poor families with pregnant mothers and/or children 0 to 6 months [38]. Another program called Bantuan Pangan Non Tunai (BPNT Program) provided non-cash support for poor families in the form of rice, egg, poultry, meat and vegetables. These programs were also likely to have protected mothers from lower socioeconomics for better access to basic healthcare facilities, including antenatal care [39]. This is explained by more than three-quarters of women completed a minimum of six antenatal care visits throughout pregnancy, especially in the midst of the COVID-19 pandemic, as recommended by the Ministry of Health Indonesia (i.e., 2, 1 and 3 times in first, second and third trimesters, respectively) [40].
Most women in our study reported a substantial decrease in household income, increase in food expenditure and approximately half of them had moderate to high food coping strategies as a result of the COVID-19 pandemic. Previous studies in developing countries discovered that respondents experienced significantly soaring food prices and decreased income as a result of the economic downturn during the pandemic [41, 42]. Poor households that spend a large portion of their income on food and have limited coping strategies are vulnerable to food insecurity and are negatively impacted by rising food prices, which will likely affect the quantity and quality of food since their purchasing power has declined [42, 43]. Our hypothesis is that pregnant women with medium to high coping strategies which indicated food insecurity are more likely to be anemic. The study findings, however, found no relationship between these variables. Meanwhile, our data showed that higher RCSI, while associated with lower maternal education and lower wealth index, was also associated with higher contraceptive users which was protective against anemia based on the multivariate analysis.
This study is community-based study which, to the best of our knowledge, is the first study in in Indonesia to investigate the association between anemia and risk factors in pregnant women during the COVID-19 pandemics. Most of the previous studies were institutional-based research that investigated pregnancy outcomes in women infected with SARS-CoV-2. Nonetheless, our study included solely pregnant women in the third trimester and Sasaknese ethnicity (as of the main observational cohort study), hence these results may not be generalizable to women in other trimesters of pregnancies and other areas. In addition to hemoglobin, assessment of other micronutrients to determine iron, B12, and/or folate-deficiency anemia would be beneficial to supplement our findings. As previous study in the same Sasaknese ethnicity reported over 70% of under two having iron-lowering allele in TMPRSS6 [44] contribution of the genetic factor as risk factor of anemia and iron-deficiency anemia in pregnant mothers needs to be further explored. Finally, due to the cross-sectional nature of the study, the authors were unable to establish a causal relationship between the independent variables and anemia.