Background: Undernutrition in pregnant women, expressed as low mid-upper arm circumference, is responsible for maternal mortality and morbidity, adverse birth outcomes, subsequent childhood malnutrition, and mortality. As a result, the purpose of this study was to determine the prevalence of maternal undernutrition and associated factors during pregnancy in public hospitals in the Bench-Sheko and Kaffa zones of southwest Ethiopia. Methods: A facility-based cross-sectional study design was employed among 566 women who received antenatal care from March–May 2021 at the public hospitals of the Bench-Sheko and Kaffa zones, Southwest Ethiopia. A systematic random sampling technique was used to select the research unit. Undernutrition was measured by mid-upper arm circumference. The data were entered into Epi- Data version 3.1 and then exported to Statistical Package for Social Science (SPSS) version 21 software for analysis. Multivariate logistic regression models were constructed using variables with a P-value <0.25 in bivariate logistic regression analysis. Finally, in multivariate logistic regression analysis, the variable with a (P-value < 0.05) is considered statistically significant. Results: A total of 566 pregnant women participated in our study with a response rate of 98.3%. The overall prevalence of undernutrition among pregnant women was 42.4% (95% CI: 38.3, 46.5). In multivariate logistic regression, the age of mothers between 16-24 years old (AOR = 3.9, 95% CI: 1.60, 9.70), household food insecurity (AOR = 1.81, 95% CI: 1.04, 3.15), and poor dietary knowledge (AOR = 3.25, 95% CI: 1.94, 5.47) were the factors significantly associated with undernutrition among pregnant women. Conclusion: According to this study finding, the prevalence of undernutrition was very much high in the study area, which was significantly associated with the age groups of 16–24 years older women, poor dietary knowledge, and household food insecurity. Therefore, the strategies and programs targeted towards reducing and preventing undernutrition among pregnant mothers should be made at all levels to improve their nutritional status, and also health information, nutrition counseling, and food assistant should be provided.
This research was done in three public hospitals in the Bench-Sheko and Kaffa zones of SNNPR, Ethiopia. The administrative center of the Bench-Sheko zone is Mizan-Aman town, which is situated 562 km from Addis Ababa, Ethiopia's capital city. According to zonal annual reports of 2019, the total population of the zone was 653,270, of whom 324,542 were men and 328,728 women. There is one general hospital in the Bench-Sheko zone with a 3-month average number of 540 antenatal care (ANC) attendants before the data collection period. Bonga town, 468 km from Addis Ababa, serves as the administrative center of the Kaffa zone. In 2017, the zone's overall population was predicted to be 1,171,133, with 578,151 men (49.4 %) and 592,982 women (50.6 %). There is one general hospital and one primary hospital in the zone. with the 3- months an average number of 490 and 401 ANC attendants before the data collection period in each hospital respectively. The study was conducted from March to May 2021. A hospital -based cross-sectional study design was used. All women in the Bench-Sheko and Kaffa zones, Southwest Ethiopia, received ANC at the public hospitals. All women who were systematically selected during ANC follow-up. All pregnant women attended ANC at public hospitals. The pregnant women who were sick or mentally unstable. In this study, the sample size was calculated using a single population proportion formula with the following assumptions in mind: The prevalence of undernutrition (P) among pregnant women from the Silte zone study finding, 21.8% [14], 5% marginal error(d), 95% confidence level (Zα/2 = 1.96), none responses rate of 10% and the design effect of 2. As a result, the sample size was calculated as follows: n= ((1.96)2 ∗0.218 (1-0.218))/(0.05)2 = ∼ 262. Thus, a minimum number of 262 pregnant women were the required number for the study. Then when we considered the design effect of 2 (262∗2) it became 524. Finally, adding a 10% none-response rate (524 ∗10%), 524 + 52 = 576 of sample size were used. First, each public hospital of the Bench-Sheko and Kaffa zones received a proportionate share of the entire sample size based on their average number of clients attending ANC before the data collection period. Next, a systematic random sampling technique was used to select the study units by using the list of pregnant mothers attending ANC as a sampling frame, and the sampling interval (Kth) was calculated by using the formula of k = N/n. Finally, every Kth person (roughly 2), as they registered, was included in the study until the desired sample size was attained from each hospital. Undernutrition of pregnant women. Age, marital status, religion, family size, occupation, education, income level, television (TV)/radio, mobile, household food insecurity, meals frequency, skipping meals, eating a snack, eating additional meals, excessive workload, residency, number of live birth, number of pregnancies, pregnancy interval, number of ANC visits, trimester, history of illness, nutrition information, source of nutrition information, dietary knowledge and attitude of pregnant women were independent variables. Structured and semi-structured questionnaires administered by Midwives and Nurses were used to collect the data. The data on socio-demographic and economic, obstetric and pregnancy-related factors, household food insecurity, dietary knowledge, dietary attitude, a dietary related habit of pregnant women like, eating habit of snacks, skipping of meals, meals frequency, eating additional meals, and nutritional status of pregnant women were assessed. The general content validity of the questionnaires was checked by relevant professionals against the conceptual framework of the study and its reliability was checked by using a test-retest method and the questions with less than 0.7 Pearson coefficient values were avoided from the questionnaire. The household food insecurity level was measured with standardized and validated tools of Household Food Insecurity Access Scale (HFIAS)that was developed mainly by Food and Nutrition Technical Assistance (FANTA), and classified the households as food secured or not [15, 16]. The tool consists of nine questions that represent the severity of food insecurity in general (access). Nine "frequency-of-occurrence" questions inquire about changes in households' diets or food consumption patterns over the previous 30 days due to limited food resources. Participants were assigned a score between 0 and 27 based on their responses to the nine questions and their frequency of occurrence over the preceding 30 days. A higher HFIAS score indicates more inadequate access to food and greater household food insecurity, while a score of 0 indicated secure access to food. Ten open-ended questions adapted from a previous study were used to assess dietary knowledge, which tried to evaluate the nutritional knowledge of pregnant women's on the nutritional aspects of pregnancy [17]. Its reliability in this study was a Cronbach Alpha of 0.92. The items measuring nutritional knowledge were scored on a dichotomous scale as 0 = does not know and 1 = knows. Each correct answer was coded as 1 and each incorrect answer was coded as 0. Then the total score was obtained by summation of each score. Finally, nutritional knowledge level was categorized as knowledgeable if she correctly answered greater than or equal to 70% of the total nutrition knowledge questions and not knowledgeable If respondents scored <70% [18, 19]. The attitude of pregnant women toward nutrition during pregnancy was assessed by using nine questions. The reliability of the attitude questions was checked and showed a Cronbach Alpha of 0.84. The pregnant woman was given one mark if the answer were a favorable attitude toward nutrition during pregnancy and zero scores if the response were an unfavorable attitude [18, 20]. Following the summation of the scores, the respondent was classified as having a favorable attitude if their attitude score was greater than or equal to the median of the scores, and as having an unfavorable attitude if their attitude score was less than or equal to the median of the scores [18]. The circumference of the middle upper arm (MUAC) was measured with MUAC tape that was non-elastic and non-stretchable. First, we removed any clothing that might cover the pregnant mother's left arm then calculated the midpoint of the pregnant mother's left upper arm by first locating the tip of the pregnant mother's shoulder, bending the pregnant mother's elbow to make a right angle, and inspected the tension of the tape on the pregnant's arm. We also made sure that the tape has proper tension and was not too tight or loose. When the tape was in the correct position on the arm with the correct tension, read and called out the measurement to the nearest 0.1cm, and the average value was taken after measuring twice. A range <23 cm was used as a cut-off point for undernutrition and while a range of ≥23 cm was for normal nutritional status. This study was conducted according to the Declaration of Helsinki. First, ethical approval was obtained from Mizan-Tepi University Institutional Research Ethics and Review Committee to conduct this study. A formal letter was sent to the Bech-Sheko and Kaffa zone health bureau administrators, as well as the selected hospitals, prior to the study. Before any data was collected, the study's goal, benefits, confidentiality, and risks were explained to the participants, and all respondents signed a written informed consent form. The respondents have agreed to maintain their anonymity, and the information they provide will be used solely for the purposes of the study. After ensuring that all data were complete and consistent internally, they were coded and entered into the Epi Data 3.1 computer software package. For further analysis, the data was exported to the Statistical Package for Social Science (SPSS) version 21 software. Undernutrition was classified and coded as 1 for "yes" if the MUAC was 23 cm and 0 for "no" if the MUAC was 23 cm [[14], [21], [22], [23], [24], [25]]. The household food insecurity access score was calculated for each household by summing up the nine food insecurity frequencies in the previous 30 days. The nine items were recorded as 0 for "no" to each occurrence and 1 for "yes" response, and then it was categorized as food secure when all items had been answered "no" and food insecure for "yes". For the descriptive statistics analyses, percentage, frequency, mean and standard deviation were calculated. We used bivariate logistic regression to examine the relationship between the dependent and independent variables. Multivariate logistic regression models were constructed using variables with a P-value <0.25 in bivariate logistic regression analysis to control for all possible confounders and identify factors that are independently associated with the undernutrition of pregnant women. To determine the strength and direction of association between dependent and independent variables, the Crude Odd Ratio (COR) and Adjusted Odd Ratio (AOR) with a 95% Confidence Interval (CI) were calculated. Finally, in multivariate logistic regression analysis, the variable with a (P-value < 0.05) is considered statistically significant. Standard error (SE) was used to test for multicollinearity between independent variables, and SE values greater than 2 were excluded from the analysis. The Hosmer-Lemeshow test was used to determine the model's fitness for goodness of fit, and the model was considered fitted if the Hosmer-Lemeshow P-value was greater than 0.05. A pretest was conducted on 5% of the total study population. The final version of the questionnaire prepared in English was translated into the local language of the respondents and then translated back to English. Two days of training were given for collectors and supervisors on the instruments, data collection method, how to take anthropometric measurements, ethical issues, and the purpose of the study. The intra and inter-observer variability of the data collector's relative technical error of measurement (%TEM) was calculated during training among ten pregnant women to minimize random anthropometric measurement error. The accepted relative technical measurement errors for intra-observers were less than 1.5%, while inter-observers were less than 2%. During training and pretesting, the accuracy of data collectors' anthropometric measurements was standardized with their trainer. Data collectors have measured anthropometric measurements twice and then the average value was taken. Double data entry was done to compare two data cells and resolve whenever there was some difference.
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