Background: Vitamin A deficiency is known for its adverse health consequences, such as blindness, growth retardation and death. To curb the problem, Ethiopia has implemented various public health measures although little has been done to examine the deficiency among pregnant and lactating women. As a result, this study assessed the prevalence of Vitamin A deficiency and associated factors among pregnant and lactating women in Lay Armachiho district, northwest Ethiopia. Methods: A community-based cross-sectional study was conducted on pregnant and lactating women in Lay Arimachiho district, northwest Ethiopia, using the multistage systematic sampling technique to select participants. The binary logistic regression model was fitted to test the effect of exposure variables, and the Adjusted Odds Ratio (AOR) with a 95% Confidence Interval (CI) and p-value < 0.05 were computed to identify the significance and the strength of the associations of variables with Vitamin A deficiency. Results: The study revealed that 13.7% of the pregnant and lactating women had night blindness and 0.4% had also Bitot's Spot. Over 35 years of age of mothers (AOR = 2.74; 95%CI: 1.15,7.43), less than USD 22.7 household monthly income (AOR = 8.9; 95%CI: 4.54,21.73), and poor hand washing practices after toilets (AOR = 8.87; 95% CI: 4.43,18.68) were positively associated with VAD, while mothers' access to the media (AOR = 0.20; 95%CI:0.07, 0.59), formal education (AOR = 0.09; 95% CI: 0.03, 0.41), over 18 years of age at first marriage (AOR = 0.19; 95%CI: 0.08,0.36), and no fasting (AOR = 0.14; 95%CI: 0.04,0.46) were negatively associated. Conclusions: Maternal Vitamin A deficiency was the major public health problem in Lay Armachiho district. Over 35 years of age of mothers, less than USD 22.7 household monthly income and poor hand washing practices after toilets were high risks for VAD, while mothers' access to the media, formal education, over 18 years at first marriage, and no fasting were low risks. Therefore, community awareness about the risk of early marriage, poor hand hygiene practices after toilets, and fasting during pregnancy and lactating period were essential. Organizations working on maternal health need to focus on mothers with low incomes in order to reduce their deficiency in Vitamin A.
This community based cross-sectional study was conducted in Lay Armachiho district from February to March 2017. The district is situated in North Gondar administrative zone, the Amhara National Regional State, 210 km from Bahir Dar, capital of the region. According to the 2016/17 Central Stastical Agency estimation, the total population of the district was 140,417; pregnant and lactating mothers accounted for 3.36 and 3.09% of the population, respectively. Cereals, grains, roots and tubers are the commonest food products of the district. All pregnant and lactating women who lived in Lay Armachiho district were the source population, while all pregnant and lactating mothers in slected kebeles of the district were the study population. Lactating woman was defined as a breastfeeding mother who had less than one year old children. The sample size was determined using the single population proportion formula considering a 95% level of confidence, 4% margin of error and a prevalence of maternal night blindness in Tahitay Koraro district, Tigray Region of 17.3% [9]. A 10% adjustment for non-response rate and 2 design effect yielded a sample of 754. Sample size for the second objective (determinants of VAD) was also calculated by assuming a 22% proportion of night blindness among pregnant and lactating mothers aged over 35 years, and less than ETB 500 household monthly income (24%) [9], 80% power, 95% level of confidence, 10% non-response rate and 2 design effect yielded 317 and 517, lower than the sample (754) for the first objective. Thus, 754 was taken as the final sample. The multi-stage systematic sampling technique was used to select eligible participants; 6 of the 31 kebeles (lowest administration units) were selected by the lottery method. Then, 392 and 362 pregnant and lactating women were proportionally allocated to the selected kebeles. Finaly, the systematic sampling technique was employed to select eligible participants, and pregnancy was confirmed by mothers’ own reports. Vitamin A deficiency was clinically confirmed by night blindness and Bitot’s Spot, while history of night blindness (dafint) was elicited by asking mothers in their local language for a word that stood for night blindness. Information on whether a woman faced any difficulty in identifying objects in dim light, especially at sun set, was collected [22]. On the other hand, mothers with opaque whitish/cheezy appearance deposits on sclera of their eye/s were deemed as having Bitot’s Spot [22, 23]. Consequently, if participants had at least one of the clinical signs (night blindness or Bitot’s Spot), the woman was defined as Vitamin-A deficient. A standardized tool was used to measure the dietary diversity of the participants. The tool comprised 14 food groups, and food items consumed by participants in the previous 24-h were labeled as “food groups”. The final figures participants scored of the maximum of 14 based on their consumption of diversified food were categorized as “low”, “medium” and “high” if they reported to have consumed ≤3, 4–5 and ≥ 6 food groups, respectively [24]. Furthermore, a seven-day quasi-food frequency questionnaire was used to estimate mothers’ dietary intake for vitamin-A rich food. Participants were requested to report the number of days they ate the listed vitamin-A rich food groups one week before the data collection. In this study, pregnant or lactating mothers were also considered as fasting when they didn’t consume any thing for a minimum of nine hours (morning to 3:00 PM) except weekends, and couldn’t take any animal products at any time (day and night) for at least one month before the actual data collection. A structured interviewer administered questionnaire was developed by reviewing literatures [8, 9, 24], and the questionnaire was first developed in English and translated into Amharic and back to English to maintain consistency. Six deploma level and two BSc degree graduate nurses were recruited to collect data and supervise the process, respectively. A two-day training was given to both groups on how to identify the clinical features of VAD (night blindness and/or Bitot’s Spot), interview techniques and data collection procedures. The questionnaire was modified based on the pre-test administered at Musie Bamb kebele on 38 mothers. Data were entered and analysed using Epi Info version 7 and SPSS version 20, respectively after cleaning to check accuracy, consistency and the identification of missed values. Descriptive statistics, such as frequency distributions, percentages, means, and standard deviations were used to summarize variables. A binary logistic regression model was fitted to test the effect of exposure variables on VAD. First, bivariable analysis was carried out to examine the effect of each independent variable on the outcome variable. Variables with p-values of < 0.2 in the bivariable analysis were fitted into the multivariable analysis. In the final model, independent variables with p-values of < 0.05 were considered as having statistically significant association with VAD. The strength of associations was determined using the adjusted odds ratio with 95%CI.