Background. Major reasons for malnutrition, particularly among those who live in low- and middle-income countries, are physiological vulnerability and inadequate intake. The objective of the study was to assess the prevalence of undernutrition and associated factors among lactating mothers of Angecha District, Southern Ethiopia. Methods. A community-based cross-sectional study was conducted among randomly selected lactating mothers in Angecha District from March to April 2017. A pretested structured questionnaire was used to assess the prevalence of undernutrition and associated factors among lactating mothers. Undernutrition was defined as the body mass index of less than 18.5 kg/m2. A multivariable logistic regression model was fitted, and the adjusted odds ratio (AOR) at a p value less than 0.05 was used to determine a statistically significant association between predictors and outcome variables. Result. The prevalence of undernutrition among lactating mothers was 21.2% (95% CI: 17.52, 25.46). The odds of undernutrition were higher among lactating mothers in the younger age group (AOR 4.12 (95% CI: 1.25-13.63), compared to 36-49 years group), dietary diversity less than five food groups (AOR 2.4, 95% CI: 1.35-4.36), and not attending antenatal care (ANC) (AOR 2.90 (95% CI: 1.43-5.86), compared to those who attended ANC for 4 or more times). The odds of undernutrition among lactating women from 3rd quantile wealth index households reduced by nearly half (AOR 0.47, 95% CI: 0.23-0.98) compared to lactating mothers from 1st quantile wealth index households. Conclusion. Nearly one in every five lactating mothers was undernourished. Age, dietary diversity score, ANC visit, and wealth index were found to be the associated factors of undernutrition. Therefore, due attention should have to be given to increase the use of ANC.
The study was conducted in Angecha District, Kembata Tembaro Zone, Southern Ethiopia. The administrative center of the district is Angecha town, which is located 255 km to the South of Addis Ababa, the capital city of Ethiopia. According to the Central Statistical Agency population projection for Ethiopia, in 2016, the total population of the district was 94,978 [18] and the district health office report showed that there are 20 health posts and 5 health centers. A community-based cross-sectional study was conducted from March to April 2017. The inclusion criteria for the study population were lactating mothers whose child’s age was less than 2 years and who lived in the study area for more than 6 months. Based on the review of the health posts’ record, 2,825 eligible lactating women were identified. To determine the sample size of the study, single population proportion formula was used with the assumption of 95% confidence level, 5% margin of error, 25% estimated prevalence of undernutrition among lactating mothers [19], and 10% nonresponse rate. Then the total sample size was 414. To use a simple random sampling technique, a sampling frame was prepared by reviewing the health posts’ family folders and records from all 20 kebeles of the district. To follow a simple random sampling technique, a computer-generated random number was used to select the mothers. Data was collected through a home-to-home visit using a structured and pretested interviewer-administered paper-based questionnaire and measurements. Socioeconomic and demographic characteristics, antenatal care (ANC) utilization, gravidity, maternal and child feeding practice, environmental health condition of the household, household food security, and wealth status were the components of the questionnaire. Household food insecurity access scale (HFIAS) was used to assess the food security status of the households, which was developed by the Food and Nutrition Technical Assistance [20]. The mother’s dietary diversity was measured by the recall of all food consumed by the mother during the previous 24 hours, which is according to the Food and Agricultural Organization’s (FAO’s) guideline for measuring household and individual dietary diversity [21]. Nutrition knowledge was measured using questions that are developed for assessing the practical nutrition knowledge of the lactating mothers. Wealth index questions were obtained from the Ethiopia Demographic and Health Survey, which was based on the household ownership of the productive asset and household characteristics [6]. In addition, the weight and height of the mothers were measured. The weight of the mothers was measured to the nearest 0.1 kg on a battery-powered digital scale. The height of the mothers was measured to the nearest 0.1 cm using a wooden height-measuring board with a sliding head bar following standard anthropometric techniques [22]. The questionnaire was initially developed in English and translated into Kambatic (local) language. Residents who completed high school and were fluent in speaking and writing of Kambatic language were recruited for data collection, and nurses were recruited for supervision. The training was given for two days by the investigator. The questionnaire was retranslated back to English by an individual who was blind to the original English version for checking consistency. Pretest of the questionnaire was employed prior to the actual data collection period on 5% of the sample size, and modification was made based on the finding. The functionality of digital weight scales was checked using known weight every morning before data collection began, and the data collectors were assured that the scale reading is exactly at zero before every weight measurement. Supervision was done by the investigator and supervisors, and they checked the collected data for completeness, accuracy, and consistency throughout the data collection period. The independent variables include sociodemographic characteristics of the mother and head of the household, family size, source of water for the household, dietary diversity of the mother, frequency of breastfeeding, age of introduction of complementary food for the child and its frequency, cultural avoided food, and nutritional knowledge of the mother. After generating the number of diversified food types consumed by the mothers using FAO’s manual [21], the dietary diversity score was calculated and the mean score (4.5 food groups) was used to classify low and high diversity. Nutrition knowledge index categories were generated based on the proportion of questions correctly responded to by the three groups. In addition, household food insecure level and wealth index were also included. The HFIAS category was calculated, and households’ food security status was categorized into four based on the Food and Nutrition Technical Assistance manual [20]. Wealth index was generated using a principal component factor analysis based on the household ownership of the productive asset and household characteristics and categorized into three quantiles [6]. The dependent variable is body mass index (BMI) which was categorized as undernutrition for those with less than 18.5 kg/m2. All the questionnaires were checked visually, coded, and entered into Epi info version 3.5.4 and imported to SPSS Version 20.0 software package for analysis. To assess the presence of an association between dependent and independent variables, bivariate analysis was done. Variables with a p value of less than 0.20 were entered into multiple logistic regression model to identify the independent predictors of undernutrition of lactating mothers. The presence of an association between independent and dependent variables using multiple logistic regression model was assessed by using an odds ratio of a p value of less than 0.05. For the assessment of multicollinearity, variable inflation factors were used. The fitness of the model was tested by Hosmer–Lemeshow goodness of fit test and the test revealed a p value of 0.289. Ethical approval for the study was obtained from Institutional Review Board of Arba Minch University (ሕጤሳኮ/4284/54; Date 11/02/2009 EC). Permission to conduct the study was obtained from Angecha District Health Office. Verbal informed consent was obtained from each study participant before the interviews and measurement. The privacy of the study participants was maintained by interviewing the mother alone. The interview was conducted by the data collector alone and sometimes with the presence of the supervisor.
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