https://orcid.org/0000-0002-5517-8557
Correction
9 Dec 2021: Rahman MA, Halder HR, Rahman MS, Parvez M (2021) Correction: Poverty and childhood malnutrition: Evidence-based on a nationally representative survey of Bangladesh. PLOS ONE 16(12): e0261420. https://doi.org/10.1371/journal.pone.0261420 View correction
Figures
Abstract
Background
Malnutrition contributes to children’s morbidity and mortality, and the situation undermines the economic growth and development of Bangladesh. Malnutrition is associated with lower levels of education that decrease economic productivity and leads to poverty. The global burden of malnutrition continues to be unacceptably high amid social and economic growth, including in Bangladesh. Therefore, identifying the factors associated with childhood malnutrition and poverty is necessary to stop the vicious cycle of malnutrition leaded poverty.
Methods
The study utilized the 2017–18 Bangladesh Demographic and Health Survey (BDHS), accumulating 7,738 mother-child pairs. Associations between potential risk factors and nutritional status were determined using chi-square tests, and multivariate logistic regression models were utilized on significant risk factors to measure their odds ratio (OR) with their 95% confidence intervals (CI).
Results
The prevalence of moderate and severe wasting was 7.0% and 1.8%, respectively, whereas the prevalence of moderate and severe stunting was 19.2% and 8.0%, while 16.4% and 3.6% of children were moderately and severely underweight. Children from the poorest and poor households were suffering from at least one form of malnutrition. Adjusted ORs were estimated by controlling socio-economic and demographic risk factors, such as poor maternal body mass index, parents’ lower education level, use of unhygienic toilet, child age in months, and recent experience of diarrhea and fever. The pattern was almost similar for each malnutrition status (i.e., stunting, underweight, and wasting) in the poorest and poor households.
Conclusion
Bangladesh achieved the Millennium Development Goals, focusing primarily on health-related indicators and working to achieve the Sustainable Development Goals. Even considering this success, the prevalence of malnutrition and poverty in same household remains relatively high compared to other developing countries. Therefore, the study recommends the implementation of nationwide systematic measures to prevent poverty and malnutrition.
Citation: Rahman MA, Halder HR, Rahman MS, Parvez M (2021) Poverty and childhood malnutrition: Evidence-based on a nationally representative survey of Bangladesh. PLoS ONE 16(8): e0256235. https://doi.org/10.1371/journal.pone.0256235
Editor: Madhavi Bhargava, Yenepoya Medical College, Yenepoya University, INDIA
Received: March 29, 2021; Accepted: August 3, 2021; Published: August 23, 2021
Copyright: © 2021 Rahman et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Data Availability: This study used publicly available Demographic and Health Surveys Program datasets from Bangladesh which can be freely obtained from https://dhsprogram.com/.
Funding: The author(s) received no specific funding for this work.
Competing interests: The authors have declared that no competing interests exist.
Background
Worldwide, childhood malnutrition is a significant public health concern as it contributes to impaired mental and physical growth and is a significant cause of child morbidity and mortality [1–3]. Around 3.5 million children die every year from malnutrition, and low- and middle-income countries (LMICs) are more prevalent, advancing the global burden of diseases by 11% [4]. Furthermore, the 2021 joint report of childhood malnutrition by the United Nations Children’s Fund, World Health Organization (WHO), and World Bank Group found that 149 and 45.4 million children under age five in 2020 were stunted and wasted [5].
Poverty and childhood malnutrition are believed to be interlinked [6], which is mediated by inadequate diet plan, lower education level, poor living standards, and lack/no access to health facilities, safe water, proper sanitation and hygiene [6, 7]. Hence, developing countries, including Bangladesh, prioritize reducing poverty and childhood malnutrition by various policy implications. Besides, a poorly nourished child has a greater likelihood of being less productive in his/her adulthood, adversely impacting the economy in the long run [8]. Therefore, proper nutrition in childhood is the foremost need as it increases their survival probability and ensures a better economy of a country.
As the effects of childhood malnutrition are intergenerational, public policies and poverty reduction strategies have targeted multi-faceted approaches in developing countries [7, 9]. Bangladesh has already initiated several of these approaches despite accounting for their effectiveness, such as nutritional programs (i.e., food for education and nutrition), education for poverty reduction [1, 2, 7, 9]. Moreover, the Poverty Reduction Strategy Paper (PRSP) of Bangladesh designed various plans to achieve strategic and employment growth, implementing macroeconomic structure in public and private sectors. The PRSP plan that includes strategic human resources development aims to reach the poor and vulnerable population for the protection of the environment, climate change, and disaster management [10]. Over the past fifteen years, Bangladesh has succeeded in reducing childhood malnutrition, but substantial inequalities exist across geographical regions and economic groups [8, 11]. According to 2014 [12] and 2017–18 [13] Bangladesh Demographic and Health Survey (BDHS), children from the lowest quintile were most prevalent in stunting, wasting, and underweight; whereas, the scenario is the total opposite for the highest quintile.
Many studies have documented the relationship between childhood malnutrition and wealth quintiles-based measures utilizing Demographic Health Surveys (DHS) data, demonstrating that childhood malnutrition is still higher in the poor quintile than the non-poor counterparts [7, 14–16]. However, apart from economic factors, many non-economic factors (such as place of residence, geographical locations, access to water and sanitation, maternal and child-related biological characteristics, etc.) are also regarded as important determinants of childhood malnutrition at the household level [1–3, 7, 17, 18]. To promote health equity and equitable gains, policymakers and development professionals strongly emphasize reducing this economic gap to have a more significant impact on childhood malnutrition [19].
In light of the discussion, it is essential for the government and development partners to carefully examine and identify the significant determinants of childhood malnutrition and its linkage to poverty [19]. However, only a few studies have focused on the determinants linked to this issue. This research will allow the government and development practitioners to curate strategic decisions, reduce the prevalence of childhood malnutrition, and design and follow-up effective actions for both conditions.
Methods
Data sources
The study used the 2017–18 BDHS data, which is freely available upon request. The survey was conducted between October 2017 and March 2018 under the National Institute of Population Research and Training, Medical Education and Family Welfare Division, and Ministry of Health and Family Welfare to assess health indicators and provide a detailed overview of the Bangladeshi population, and maternal and child health-related issues. A total of 7,738 mother-child pairs’ information was assessed in the current study. Detailed survey information (such as data collection procedures, sample size determination, etc.) was described in the BDHS 2017–18 report [13]. The study included ever-married women aged 15–49 with valid body mass index (BMI) who are currently not pregnant and gave birth to at least one child preceding the survey. Unmarried and not pregnant mothers with incomplete BMI information were excluded from the sample. A total of 20,127 ever-married women aged between 15 and 49 years were interviewed out of 20,376 eligible women [13]. Only 7,762 participants gave birth to children, and there were 24 missing values among them. We excluded the missing values from our analyses, making the total number of observations 7,738 (Fig 1).
Study variables
Dependent variables.
We used three dependent variables for this study: stunting, underweight, and wasting. Dependent variables were classified based on Z-scores of height-for-ages (HAZ) for stunting, weight-for-height (WHZ) for wasting, and weight-for-age (WAZ) for underweight. WHO Anthro Plus (version 3.2.2) was used to calculate the Z-scores and they were categorized either as nourished (Z-score ≥ −2.0), moderately stunted/underweight/wasted (-3.0 ≤ Z-score < -2.0), or severely stunted/underweight/wasted (Z-score < -3.0) following WHO Child Growth Standards guideline [20]. In this study, a small number of children were severely malnourished; therefore, moderate and severe malnutrition were merged into one. The outcome variables used in this study are stunting, underweight, and wasting (coded 1 = presence of the condition, otherwise 0).
Independent variables.
The study analyzed independent variables from prior literature, which included three main categories: socioeconomic and demographic characteristics, child-related determinants, and paternal characteristics. Socioeconomic and demographic characteristics involved: division (Barisal, Chittagong, Dhaka, Khulna, Mymensingh, Rajshahi, Rangpur, Sylhet); place of residence (urban, rural); drinking water source (unimproved, improved); type of toilet (unhygienic, hygienic); place of childbirth (facility birth, home delivery) [21, 22]. Child-related determinants included birth order (1st, 2nd, 3rd, ≥4th); age in months (0–5, 6–11, 12–23, 24–35, 36–59); sex (male, female); experience of diarrhea and fever two weeks preceding the survey (no, yes). Furthermore, paternal factors consist of maternal BMI (underweight: <18.50kg/m2, normal: 18.50–24.99kg/m2, overweight/obese: ≥25.00kg/m2) based on the global cut-off points [23]; maternal age in years (15–24, 25–34, 35–49); maternal age at first birth (<18, 19–24, ≥25); parental education (no education, primary, secondary, higher); mother’s current working status (no, yes); mother’s exposure to television (no, yes); mother’s antenatal care (ANC) visit number (Nil, 1–3, ≥4); father’s occupation (agricultural, business, non-agricultural, other). Household wealth status was originally categorized into five groups based on principal component analysis, which was then recoded into three groups: poorest, poor, and well-off (consisted of medium, richest, and richer).
Statistical analyses
Before conducting any statistical analyses, we weighted the dataset due to the cluster sampling design of DHS. Then, we reported descriptive statistics (i.e., frequency and percentage) and weighted prevalence with their 95% confidence intervals (CIs) of selected independent variables. Pearson’s chi-square test of independence examined the relationship between dependent and independent variables. We implemented multivariate logistic regression models to estimate the adjusted odds ratios (AORs) and their 95% CIs for stunting, underweight, and wasting segregated by wealth status (i.e., poorest, poor, and well-off). Besides, all confounding variables were controlled while multivariate modeling, and we examined multicollinearity among independent variables by applying the variance inflation factor. All data analyses were performed using the Statistical Package for Social Science (SPSS) version 25 (SPSS Inc., Chicago, USA) and R version 4.0.2 (Bell Laboratories, New Jersey, USA).
Ethical consideration.
DHS data exists in the public domain and is freely accessible upon reasonable request. The Ethics Committee of Bangladesh and ICF international approved the study protocol; therefore, we did not require further ethical approval. Details of the ethical approval can be found in the BDHS 2017–18 summary report [13].
Results
Table 1 exhibits the univariate results of socioeconomic and demographic, parental, and child-related characteristics from 7,738 children aged under five years. 7% and 1.8% of children were moderately and severely wasted, whereas moderate and severe stunting percentages were 19.2% and 8.0%, respectively. Results also showed, 16.4% and 3.6% of children were moderately and severely underweight. More than half (52.3%) of the children were male, the majority (73.6%) were from rural areas, almost one-fourth (24.9%) were from Dhaka, and about 7.0% of mothers and 15.2% of fathers had no formal education.
Table 1 also portrays the frequency and percentage of selected background characteristics for under-five children segregated by household wealth status. All forms of child malnutrition (i.e., wasting, stunting, and underweight) peaked in the poorest households and the lowest in well-off families. Poorest households had more frequency of underweight mothers, whereas overweight/obese mothers were more frequent in well-off families. More than 70% of mothers who gave their first birth before 18 years were from the poorest families, while the percentage was much lower in poor (67.0%) and well-off (51.0%) households. Percentages of parents with secondary and higher education, access to hygienic toilets, and facility birth were considerably higher in well-off families compared to their poorest and poor counterparts. Mothers’ ANC visit number also increased with better household status.
Table 2 shows the prevalence of wasting, stunting, and underweight by the selected characteristics of under-five children with their 95% CIs. Results show that the prevalence of all forms of malnutrition (i.e., wasting, stunting, and underweight) was the highest in Sylhet division, poorest households, and underweight, illiterate mothers aged between 35 and 49 years. Mothers’ first birth age of <18 years, lack of exposure to television, households with unimproved water, and unhygienic toilet facilities also had a higher prevalence for all forms of malnutrition. The prevalence of wasting, stunting, and underweight was the highest amongst male children, children born at home, and who had recent experience of fever. Moreover, the prevalence of wasting was the highest among children aged below six months. While 24–35 and 36–59 months aged children were more prevalent in stunting and underweight, receptively.
Table 3 represents associated factors of stunting segregated by household wealth status. The result indicated that underweight mothers significantly affected the poorest and poor households due to higher ORs. Poorer households showed a significant association of stunting with division, indicating a greater likelihood of stunted children in Chittagong (1.16 folds higher than Sylhet). However, maternal age at first birth was not significantly associated with stunting among various household wealth statuses. Paternal education greatly impacted poor and rich households (2.94 and 1.98 times more than higher education levels), which resulted in stunted children. The odds of stunting were higher in rich households for fathers with non-agricultural services and business. In poorer households, 1st, 2nd, and 3rd birth order children had a lower odds of being stunted when compared to ≥4th birth order. Children’s age significantly affected all households; for example, the likelihood of stunting was higher for children aged 36 to 59 months in the poorest and poor families, but odds were lower in well-off families. Low maternal BMI was significantly associated with increased stunting for the poorest and poor compared with well-off families.
Table 4 visualizes children’s odds of being underweight by household wealth statuses (i.e., poor, poorer, and well-off). Results implied that maternal BMI significantly affected all wealth statuses. For instance, if a mother was underweight, there was a higher likelihood of the child being underweight. Besides, illiterate parents from the poorest and poor households had higher chances to have an underweight child. In poorest households of Dhaka and Barisal, there was a greater chance for a child being underweight, but the likelihood was higher for poor households in Mymensingh. Furthermore, maternal age, mother’s exposure to television, drinking water source, type of toilet, mother’s ANC visit number, child’s birth order, place of childbirth showed insignificant association with underweight within different wealth statuses.
Factors associated with wasting within different categories of wealth statuses are reported in Table 5. It was evident from the results that only poor households had a higher risk of having wasted children when the mother was underweight. However, mother’s education, type of toilet, ANC visit number, sex, and birth order children had no significant impact on wasting within different wealth statuses. Well-off families residing in Dhaka had a higher chance of having a wasted child, but other household statuses yielded insignificant results. Recent fever experience in the last two weeks was associated with poor and well-off wealth indexes, and it had higher odds of a wasted child.
Fig 2 exhibits the prevalence of different forms of malnutrition by place of residence and different wealth statuses. It is very clear from the figure that stunting, wasting, and underweight prevalence is higher in the poorest, followed by poor and well-off households. The prevalence of these three forms of malnutrition was also comparatively higher in Sylhet division.
Discussion
The paper aimed to identify the associated factors with childhood malnutrition and poverty in Bangladesh. In low resource countries like Bangladesh, poverty and childhood malnutrition continue to be major public health concerns. Although Bangladesh has attained excellent progress over the past few decades in different areas of health, particularly in health-related Millennium Development Goals, and has made few nutritional achievements [1, 24]. Nevertheless, the high prevalence of childhood malnutrition still exists in Bangladesh, and it cannot be denied [1]. Despite the recent economic growth and poverty reduction, the reduction rate of childhood malnutrition in Bangladesh is somewhat unsatisfactory. There is consensus that economic growth and poverty reduction alone cannot decrease malnutrition [25, 26] unless the issues of mothers’ malnutrition history, teenage marriage, and inappropriate diets are addressed. According to the BDHS 2017–18 report, 31% of under-five children are still stunted and 9% are severely stunted; while 8% are wasted, with 2% being severely wasted and 22% of children are underweight, and 4% are severely underweight [13]. In Bangladesh, 21.8% of population are still living below the national poverty line [27], like many other LMICs, which is predicted to further increase due to the recent COVID-19 pandemic [28]. Besides, the ongoing pandemic is expected to increase the prevalence of childhood malnutrition [29]. Therefore, examining the associated factors with malnutrition and poverty is an enormously important topic in the current context. This is the first study in this context, using the most recent round BDHS 2017–18 dataset to the best of our knowledge.
In terms of childhood malnutrition, a clear rural-urban gap was observed in the current study. Rural children were more likely to be stunted than their urban counterparts (29.2% compared with 21.7%). Stunting was most prevalent in Sylhet (37.6%) and lowest in Dhaka and Khulna. The differences in stunting across wealth quintiles were larger (36.4%) for children whose mothers were in the lowest wealth quintile than their well-off counterparts (21.5%). Children living in rural areas were more likely to be underweighted than those living in urban areas (20.5% vs. 18.4%). A similar negative association was observed between household wealth status and the proportion of underweight children, i.e., children in the poorest households were more likely to be underweight (27.0%) than children from the well-off households (16.2%). The prevalence of wasting was slightly higher among children residing in urban areas (9.7% vs. 8.8%).
The multivariate logistic regression analyses showed several predictor variables were associated with childhood malnutrition across different wealth statuses, which is in line with previous studies in Bangladesh [1–3, 18, 30] and elsewhere [4, 7, 24, 31–33]. The results demonstrate that children from the poorest and poor households were more likely to be stunted, wasted, and underweight. There remains a very close connection between poverty and childhood malnutrition, and vice-versa. Poverty often leads to financial shortages and inadequate basic amenities (such as education, health care services, food insecurity, shelter, etc.), forcing them to live impoverished lives. Worldwide, the poorest countries face the most significant burden of various types of childhood malnutrition [26]. Nutritional disparities reduce productivity and potentially decrease human capital, making countries prone to poverty and reinforcing childhood malnutrition and poverty’s vicious cause-effects cycle [26].
Lack of formal parental education is strongly linked to stunting, wasting, and underweight among under-five children, supporting previous studies conducted in Bangladesh [2, 3, 18, 34] and similar settings [24, 31, 32]. The possible explanation could be that a lower level of education prevents parents from obtaining employment or leads to poorly paid employment, limiting the household incomes and reduces the purchasing capability of good quality and quantity of foods and routine medical check-ups; consequently, children suffer from various infections and parasitic diseases [35]. Furthermore, poor maternal BMI was associated with childhood malnutrition among different categories of wealth statuses, aligning the results with previous studies [1, 3, 18]. As mothers with standard BMI are likely to have healthier babies [36], maternal nutritional status needs to be included in child undernutrition policies and programs. Furthermore, stunting was significantly prevalent among children of advancing age from the poorest and poor families but insignificant for well-off households, supported by a previous study in Nigeria [37]. During the first 11 months, children are being breastfed, and nutrition from the breast milk may help them have adequate growth, but later, when they give up breast milk, the likelihood of childhood stunting increased tremendously [1].
The coexistence of poverty and malnutrition is intergenerational, and this needs to be recognized urgently by implementing effective measures to break this vicious cycle [38–40]. Prior research also showed that malnourished mothers are more likely to have malnourished children [8, 26, 41–43], and early intervention can break this cycle of poverty and childhood malnutrition. The government of Bangladesh is well conscious about this and is doing a lot in this regard. Besides, different NGOs are relentlessly working to ensure nutrition for mothers and children by implementing different programs such as Infant and Young Child Feeding, National Nutrition Programme, Suchana etc. This high prevalence of childhood malnutrition, however, questions the appropriateness of these interventions those were previously implemented.
This study has several policy implications. First, since poverty and malnutrition are intertwined, nutritional and poverty reduction strategies and initiatives should therefore be deserving of preference and should be rounded and holistic in any way. Second, the government should take robust and rigorous steps in improving nutritional status among women and their children to provide good nutritional foods for poor and underprivileged households. Third, interventions must target economic empowerment and short-term dietary supplements for people with disadvantaged economic status. Fourth, the Bangladeshi Government may wish to establish effective policies and programs in collaboration with national and international organizations, which will aid all poor women and infants during pregnancy and postnatal period. Furthermore, parents need better access to health information and education; therefore, community-based health services should be promoted at the grassroots level.
The main strengths of this study are that it used the latest nationwide DHS survey data. The surveys were carried out at the population level with a large study sample, and the results can be generalized for the whole Bangladeshi population. In addition, the appropriate statistical techniques were applied in this study for estimation. However, the limitation of this study is the cross-sectional survey design where both exposure/predictors and outcomes were measured at the same timepoint. Therefore, no causal relationships can be inferred.
Conclusions
Our investigation has established the significant associated factors with poverty and childhood malnutrition. The study supports the need for organized efforts, especially among the poorest and poor, to reduce the degree of malnutrition. It is well-known that 12 of the 17 SDGs goals prioritize and include highly relevant indicators to nutrition, while the second-highest priority is to end poverty, hunger, food insecurity, and improved nutrition. Therefore, if we want to eradicate poverty and hunger sustainably, we need to build a systemic, healthy, and equitable society.
Acknowledgments
Authors want to thank Demographic Health Surveys (DHS) for providing and permitting us to use the datasets for independent research.
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