Abstract
Background:
Maternal undernutrition remains a public health issue, particularly in low-income countries such as Ethiopia, which increases the possibility of a cycle of malnutrition in future generations.
Objectives:
This study assessed the prevalence of undernutrition and its associated factors among pregnant women in Minjar Shenkora district north Shewa, Ethiopia.
Design:
The study used a multicenter cross-sectional study design.
Methods:
The study was conducted from June to August 2021 with 334 pregnant women selected using systematic random sampling techniques. A semi-structured questionnaire was used to collect the sociodemographic, obstetric, and dietary data. The nutritional status of the pregnant women was assessed using mid-upper arm circumference measurements. Multivariate logistic regression was used to identify independent variables associated with maternal undernutrition, with an adjusted odds ratio (AOR) of p < 0.05 indicating statistical significance.
Results:
The prevalence of undernutrition was 22.2%. Low monthly household average income (AOR = 3.69, 95% CI: 1.62–8.40), women’s education limitation (AOR = 1.24, 95% CI: 0.28–5.46), poor nutritional attitude (AOR = 2.54, 95% CI: 1.21–5.32), and inadequate dietary diversity score (AOR = 4.42, 95% CI: 1.53–12.8) were significantly associated with undernutrition.
Conclusion:
Maternal undernutrition prevalence was very high based on the WHO standards, and low monthly household average income, women’s education level, poor nutritional attitude, and inadequate dietary diversity scores were associated with undernutrition. Therefore, policies and programs aimed at reducing maternal undernutrition are needed. Socioeconomic strengthening and nutritional counseling during pregnancy are also recommended for improved nutritional status.
Introduction
Pregnancy is an anabolic process in which nutritional demand exceeds the growth of uterine cells.1,2 This is a critical time for human development, and anything that compromises the fetal environment may have important and lasting effects on a child’s future health. Optimal nutrition during this period is important for the health and well-being of the mother as well as the child.3,4 Pregnant women need more food, a varied diet, and additional macro- and micronutrients because of the physiological, anatomical, biochemical, and several other related changes that occur in the fetus and themselves.5 –8 Poor maternal nutrition contributes significantly to the risk of anemia and negative pregnancy outcomes.9,10
Undernutrition is the term used to describe when a person consumes insufficient amounts of nutrients and energy to meet their health needs.11,12 Undernutrition raises the possibility of a cycle of malnutrition, intrauterine growth, infant stunting, subsequent lifetime of impaired productivity, increased maternal and fetal morbidity, tissue depletion in mothers, intrauterine growth retardation, stillbirth, and premature birth.13 –15 Maternal undernutrition in low- and middle-income countries is an underlying cause of 3.5 million deaths and disabilities.16,17 Africa has a significantly higher rate of undernutrition during pregnancy, with sub-Saharan Africa being the most affected region.18,19
In Ethiopia, undernutrition continues to remain a common public concern owing to various factors, such as sociodemographic status, political instability, and economic decline.20,21 Nearly one in five pregnant women is malnourished, and approximately 68% are more likely to be malnourished. 22 The burden of undernutrition can be associated with sociodemographic and economic characteristics, obstetric and health-related characteristics, dietary characteristics, and environmental factors.23 –25 Although studies have assessed the nutritional status of pregnant women in other parts of Ethiopia,22,25,26 they indicated inconsistencies in the prevalence and associated factors within communities. Similarly, the studies focused on urban communities rather than rural settings. This study consisted of rural kebeles in the district which may be influenced by local norms, sociodemographic and economic problems, and limited access to health and nutrition services. The problem of undernutrition needs to be assessed within communities with different lifestyles to implement evidence-based maternal nutrition programs for healthy pregnancy outcomes in the country. Hence, this study aimed to assess the prevalence of undernutrition and its associated factors in pregnant women in north Shewa, Ethiopia.
Methods
Study design and setting
A multicenter cross-sectional study was conducted in public health centers in the Minjar Shenkora district, north of the Shewa Zone, Ethiopia, between June and August 2021. The findings in the study were written and reported according to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement. The district is located at the southern end of the North Shewa Zone and is bordered to the east, south, and west by the Oromia region, to the northwest by the Hegere Mariam Woreda, and to the northeast by the Berehet Woreda. It is an administrative district of the northern Shewa Zone, the Amhara National Regional State. Arerti is an administrative center located 135 km from Addis Abeba, the capital city of Ethiopia. According to the 2007 census report of the Statistical Agency of Ethiopia, the district’s total population is 128,879, with 66,918 men and 61,961 women. Six public health centers in the district provide antenatal services to the community namely, Bolo Health Center, Balchi Health Center, Dire Health Center, Kristos Semra Health Center, Arerti Health Center, and Arerti Hospital.
Study population
The study population consisted of pregnant women who resided in the Minjar Shenkora district, and who attended antenatal clinics at health centers in the district during the study period.
Eligibility criteria
All pregnant women who visited public health centers in the district for follow-up were eligible for inclusion in the study. Exclusion criteria included pregnant women with infectious diseases (HIV/AIDS and tuberculosis), chronic diseases (hypertension and diabetes mellitus), hematologic diseases, and emergency cases. Similarly, pregnant women who were unable to hear and/or speak were excluded.
Sample size determination and sampling techniques
The required sample size for this study was calculated using a single population proportion formula, considering a previous finding of 28% with 95% confidence and 5% margin error. 27 Considering a nonresponse rate of 10%, the final study sample size was calculated to be 334 participants. The calculated sample size was proportionally allocated to all public health centers in the district based on the average number of pregnant women in the respective antenatal care visits before the study period. The average number of pregnant women who visited the antenatal care service daily through data collection was predicted primarily based on the previous 2 months’ daily client flow of the clinic, which was obtained by referring to client registration books or records before data collection. The sampling interval was calculated by dividing the monthly average attendance at the follow-up of the antenatal care by the required sample size (k = N/n). Systematic simple random sampling technique was used. From the sampling procedure, after calculating the sampling fraction “k,” the first participant was randomly selected between 1 and “k” value. We consider every kth value as a sample from each health center.
Study variables
Outcome variables
The outcome variable of this study was the nutritional status of pregnant women.
Independent variables
• Sociodemographic and economic factors
• Obstetric and health-related characteristics
• Dietary diversity of pregnant women
• Nutritional knowledge and attitude perspectives
Operational definitions
Maternal undernutrition
Pregnant women’s nutrition status assessed using the mid-upper arm circumference (MUAC) measurement. 28
Maternal dietary diversity score
Number of food groups consumed by pregnant women out of the 10 food groups; Food groups included cereals, pulses, nuts, dairy, meat products (including poultry and fish), eggs, dark green leafy vegetables, vitamin A-rich vegetables and fruits, other vegetables, and other fruits. 29
Maternal nutritional knowledge
Pregnant women’s knowledge of nutrition, including the ability to remember and recall food and nutrition-related terminologies.30,31
Maternal nutritional attitude
Pregnant woman’s feeding or eating behavior is influenced by her emotions, motivations, perceptions, and thoughts. 30
Data collection procedures
Data were collected using a semi-structured questionnaire adapted and modified from previous literature,25,26 which consisted of questions on sociodemographic characteristics, obstetric and health-related characteristics, nutritional knowledge, nutritional attitude, and dietary diversity. The data were collected by trained data collectors. The dietary diversity score (DDS) questionnaire included 10 different food groups based on their nutrients: (1) cereals, white roots, tubers, and plantains; (2) pulses and legumes (beans, peas, and lentils); (3) nuts and seeds; (4) dairy and dairy products; (5) meat, fish, and poultry; (6) eggs; (7) dark green leafy vegetables; (8) vitamin A-rich fruits and vegetables; (9) other vegetables; and (10) other fruits. The 24-h dietary recall method was used to assess the DDS, and the 2 days nonconsecutive multiple-pass 24-h recall method was used to reduce individual bias. Pregnant women who consumed 5 or more of the 10 food groups on the day or within 24 h before data collection were considered to have an adequate DDS, while pregnant women who consumed less than 5 food groups of the 10 food groups on the day or within 24 h were considered to have inadequate DDS. 29
The nutritional knowledge questionnaire was a dichotomous type scale adapted from previous similar studies. Pregnant women who scored ⩾70% out of 100% from prepared questions showed good nutritional knowledge, whereas those who scored <70% had poor nutritional knowledge. Similarly, a questionnaire that was used in previous studies was used to assess nutritional attitude; pregnant women who scored ⩾mean from the prepared questions had a favorable attitude, while pregnant women who scored <mean score were considered to have an unfavorable attitude toward nutrition.30,31
Anthropometric measurement
The nutritional status of pregnant women was assessed by MUAC measurements. 32 The upper left arm was measured for a right-handed pregnant woman and the upper right arm was measured for a left-handed woman, with no clothing. The MUAC of a pregnant woman was measured at the midpoint between the acromion of the scapula and olecranon of the ulna on the arm. Measurements were taken using an adult MUAC tape that was non-elastic and non-stretchable. Finally, the average of two measurements was taken on the same day and recorded to the nearest 0.1 cm, per standard procedures. A pregnant woman with a MUAC<23 cm was considered undernourished, while a pregnant woman with a MUAC ⩾23 cm was considered to have a normal nutritional status.32,33
Data quality control
The questionnaire was prepared in English, translated into Amharic, and back-translated to English to ensure consistency. To preserve data quality, the questionnaires were pre-tested on 5% of the pregnant women, and corrections and modifications were made based on the gaps identified during the interview. Data collectors and supervisors were trained on the study’s background, objectives, tools, and ethical procedures. Training for data collectors emphasized the importance of keeping the study participant’s information confidential. Furthermore, supervisors were required to check how the data collectors performed their tasks, including ethical procedures, and verify the completion of questionnaires during the data collection process.
Statistical analysis
After data collection, data were edited, coded, checked, and cleaned for consistency and completeness. The data were entered into Epidata 3.1 version software and then exported to IBM SPSS version 21 for analysis. Descriptive statistics were used to describe the participants in the study. Bivariate and multivariable logistic regression analyses were performed to measure the association between dependent and independent variables. Variables with a p-value <0.2 in bivariate regression were included in the multivariable logistic regression analysis, whereby a p-value <0.05 was considered to be statistically significant. Assumptions of logistic regression included evaluation of multicollinearity and confounders before the final logistic regression model analysis. The fitness of the final model was checked using the Hosmer–Lemeshow goodness-of-fit test.
Results
Sociodemographic and economic characteristics of pregnant women
A total of 334 pregnant women were interviewed and included in the study, resulting in a response rate of 100%. More than half (56.9%, n = 190) were aged 26–34 years and 79.9% (n = 267) were married. The majority (74%, n = 247) of the pregnant women were members of the Orthodox Church and most (84.1%, n = 281) were of Amhara ethnicity; 213 (63.8%) lived in rural areas (Table 1).
Sociodemographic and economic characteristics of the pregnant women in north Shewa, Ethiopia, 2021.
Protestants, and Catholics.
Oromo, Argoba, and Tigre.
Merchants and daily labor.
Obstetric and health characteristics of pregnant women
In this study, 215 (64.4%) and 186 (55.7%) patients had multigravidas and multiparas, respectively. More than half of the pregnant women 186 (55.4%) were in their third trimester of pregnancy and 120 (34.9%) had 4 or more antenatal care visits during their current pregnancy, but only 137 (41%) women had access to nutritional information (Table 2).
The obstetric and health characteristics of the pregnant women in north Shewa, Ethiopia, 2021.
Nutritional knowledge, attitude, and dietary diversity of the respondents
In this study, only 103 (30.8%) respondents were knowledgeable about nutrition, while the remaining 231 (69.2%) were not knowledgeable regarding their nutrition. One hundred eighty-seven (56%) respondents had a favorable attitude, and the remaining 147 (44%) had an unfavorable attitude toward nutrition. In this study, 31.1% of the pregnant women achieved an adequate DDS, whereas 68.9% had an inadequate DDS (Table 3).
Nutritional knowledge, attitude and dietary diversity of the pregnant women in north Shewa, Ethiopia, 2021.
The prevalence and determinants of undernutrition among pregnant women
Of the pregnant women, 74 (22.2%) were undernourished (MUAC <23 cm) and 260 (77.8%) had a normal MUAC (⩾23 cm). In the bivariate analysis, the average monthly household income, education level of the pregnant woman, education level of the husband, occupation of the pregnant woman, occupation of the husband, nutritional knowledge and attitude, and dietary diversity were associated with undernutrition. However, in multivariate regression analysis, only average monthly household income, education level, nutritional attitude, and DDS remained significantly associated with undernutrition during pregnancy. Pregnant women who earned below an average of 2,000 ETB household monthly income were more likely to be undernourished than those who earned ⩾2,000 ETB. Pregnant women with no formal education were more likely to be undernourished than those with an education level of college and above. Additionally, pregnant women who did not have a favorable attitude toward nutrition were more likely to be undernourished than those who had a favorable attitude, and pregnant women with an inadequate DDS were more likely to be undernourished than those with an adequate diet (Table 4).
Determinants of undernutrition among pregnant women north Shewa, Ethiopia, 2021.
1: Reference; COR: crude odds ratio, AOR: adjusted odds ratio; CI: confidence intervall.
p < 0.05. **p < 0.01. ***p < 0.001.
Discussion
Undernutrition is still a major health concern in many low- and middle-income countries, including Ethiopia, especially during crises such as political instability and economic decline. 19 It is therefore critical to assess the prevalence of undernutrition and its associated factors in pregnant women. This study assessed the prevalence of undernutrition and the factors contributing to undernutrition in pregnant women in north Shewa, Ethiopia. The study found that the overall prevalence of undernutrition among pregnant women was 22.2%, and relevant factors, such as low monthly household average income, low educational level of women, unfavorable nutritional attitude, and inadequate dietary diversity, were significantly associated with undernutrition among pregnant women in the study area. The results of this study are comparable with a study conducted in Alamata, where 23.2% of pregnant women were undernourished, but it was higher than other studies in Gondar (14.4%), Mettu (17.5%), and Dessie (19.5%).17,33 –35 However, the prevalence of undernutrition in this study was lower than that in studies conducted in Kacha Birra District, Southern Ethiopia (52.6%) and Konso District, Ethiopia (32%).26,36 These variations might be due to differences in the MUAC cutoff value, study season, socioeconomic differences, dietary diversity practices during pregnancy, or environmental factors that affect the nutritional status of women. The findings of this study are also supported by a systematic review and meta-analysis on the burden of malnutrition in African countries which found the overall maternal undernutrition among pregnant women to be 23.5% and similar results were observed in Kenya (19%) and Nigeria (21.7%). 18 These similarities may be due to the fact that African countries are still facing problems of malnutrition. 18
This study found that lower household monthly average income increased the risk of undernutrition. This is supported by previous studies conducted at the Gedo and Meso Health Centers.37,38 Women from low-income households were consistently affected by undernutrition since income level is a key determinant of maternal nutritional status, as it affects access to food, use of healthcare, and availability of water supplies and sanitation services. The results of this study also indicated that the educational status of pregnant women was a significant indicator of their nutritional status, pregnant women with no formal education were more likely to be undernourished than pregnant women with an education level of college and above. This is consistent with a comparative report on maternal nutrition in the Metu and Gedo zones as well as in central Ethiopia,21,35,37 which showed that pregnant women who had college-level education and above were less likely to be undernourished than those with no formal education. This implies that education is a valuable indicator that enables women to provide adequate care regarding their dietary patterns, which is a critical factor for health and well-being. Another finding of this study was that pregnant women with an unfavorable nutritional attitude were more likely to be undernourished than those with a favorable nutritional attitude. This finding is similar to previous studies conducted in Dessie Town, Kafa Zone, and Western Ethiopia.33,39,40 Maternal nutritional attitude is an essential element in ensuring healthy dietary behaviors and food choices, which improves the quality of the diet to meet the increased nutritional demand in pregnancy.
Another finding of this study was that pregnant women with inadequate DDS were more likely to be undernourished than those with adequate DDS. This finding is supported by studies in Southern Ethiopia, Gindeberet district, Ethiopia, and Gurage Zone, Southern Ethiopia.26,41,42 Dietary diversity is an indicator of the adequacy of nutrition, which improves nutritional status and meets macro- and micronutrient requirements. 43 Overall, the major strength of this study is that it identified the prevalence and associated factors of undernutrition, which is important for strategies to improve maternal nutritional status and health. In addition, this research covered all health centers in the study district, which ensured population representation. Despite these strengths, the study exhibited limitations: the cross-sectional design was not able to show temporal and causal effect relationships of variables with dependent variables and the study design limited the pregnant women included in the study to those attending antenatal care services in health facilities. In addition, the women’s response may be subject to social desirability bias. Further studies should be conducted in other rural areas to confirm the generalizability of the study results.
Conclusion
The prevalence of undernutrition was relatively high in this study area, and determinant factors such as low monthly household average income, low women’s educational status, unfavorable nutritional attitude, and inadequate DDS were associated with the prevalence of undernutrition in pregnant mothers. Therefore, policies and programs aimed at reducing maternal undernutrition are needed. Socioeconomic strengthening and nutritional counseling during pregnancy are recommended to improve maternal nutritional status. Furthermore, community-based research that covers a larger population size should be conducted to investigate other determinant variables of maternal undernutrition in the study area.
