Abstract
Background
Adequate infant and young child feeding during the first 1000 days of life is very essential to improve child health, survival, growth, and development through minimum dietary diversity (MDD). Hence, this study aimed to assess MDD and its multi-level factors among infants and young children aged 6–23 months in Ethiopia.
Methods
Ethiopian Demographic and Health Survey (EDHS-2016) data was used to identify both individual and community-level factors of dietary diversity. Weighted samples of 2,962 children were eligible and a multi-level regression model was used for the analysis. Finally, factors with a P-value of <0.05 were considered statistically significant.
Results
The prevalence of MDD among children in Ethiopia was 12.09%. According to this study, factors such as having a mother who attended higher education (AOR = 3.09, (95% CI; _1.67–5.71)), being a female household head (AOR = 0.62, (95% CI; _0.40–0.95)), having a mother's agricultural occupation (AOR = 1.89, (95% CI; _1.10–3.23)) and living in the household in the richest wealth index were significantly associated at the individual level. At the community level, children living in rural areas (AOR = 0.62, 95% CI; 0.39–0.98) were significant risk factors for MDD (AOR = 0.62, 95% CI; 0.39–0.98).
Conclusion
The educational and occupational status of the mother, wealth index, and region were significantly associated with MDD. Hence, strengthening of the existing nutritional intervention is helpful to increase diversified food consumption among children.
Keywords: Infant feeding, Child feeding, Diet, Children, Multilevel analysis, Ethiopia demographic and health survey
Infant feeding; Child feeding; Diet; Children; Multilevel analysis; Ethiopia demographic and health survey.
1. Introduction
Appropriate infant and young child feeding practices are very essential for the improvement of child health and development (UNICEF, 2011; WHO, 2007, 2010). Hence, it directly affects the nutritional status of children under two years of age ultimately, impacting child survival. Improving infant and young child feeding practices is therefore critical to improved nutrition, health, and development of children (WHO, 2007).
The first two years of life are considered as a “critical window of opportunity” for the prevention of growth faltering and micronutrient deficiency through optimal feeding (UNICEF, 2011). Adequate nutrition during the first 100 days is known to be crucial to ensure optimal growth, and health of children, which ultimately helps them to reach their full growth potential. In low-income countries where early childhood under-nutrition is common investing in the first two years of life is not only helpful for healthy child growth, but also has the potential to break the cycle of intergenerational malnutrition (Ali et al., 2018; Blackstone and Sanghvi, 2018; Khamis et al., 2019; SD., L., & M., 2017).
Minimum dietary diversity is one of the key recommendations to prevent micronutrient deficiency among children from the eight core infant and young child feeding (IYCF) recommendations to prevent child growth faltering (WHO, 2007). Globally, a small proportion of children received nutritionally adequate complementary foods. In many countries, less than one-fourth of infants aged 6–23 months meet the criteria of minimum dietary diversity that is appropriate for their age. After 6 months of age, children become prone to malnutrition if they did not get an appropriately diversified diet (Roba et al., 2016). To assess feeding practice precisely and to compare within and across the nations, Minimum Dietary Diversity (MDD) is a widely used indicator, which is recommended by WHO, for assessing the adequacy of dietary micronutrient density for children 6–23 months old (Beckerman-Hsu et al., 2020; Mya et al., 2019). Even though Ethiopia has established National Strategy on infant and young child practices since 2004, the level of low dietary diversity is still high (MOH, 2004). Moreover, even if there are few studies covering the small geographical areas, country-level evidence on minimum dietary diversity among infants and young children (children aged 6–23 months) is lacking. Therefore, this study was conducted to assess the minimum dietary diversity and its association with multi-level factors among infants and young children in Ethiopia by using the EDHS-2016 data.
2. Materials and methods
2.1. Study setting
A detailed analysis was carried out using Ethiopian Demography and Health Survey (EDHS-2016) data. The EDHS-2016, a cross-sectional study of design, was conducted from January 18 to June 27, 2016, in Ethiopia. Ethiopia is located in the eastern horn of Africa (3°–14° N longitude, and 33°-48°E latitude). Ethiopia covers 1.1 million square kilometers with tremendous geographical diversity, which ranges from 4550 m above sea level down to the Afar depression to 110 m below sea level. Administratively, Ethiopia is divided into nine regional states and two city administrations, further subdivided into 68 zones, which are in turn divided into 817 districts and 16,253 kebeles (the lowest local administrative units in the country) (Central Statistical Agency - CSA/Ethiopia & ICF, 2017).
2.2. Source population
All children aged 6–23 months in Ethiopia.
2.3. Study population
All eligible children aged 6–23 months, in the selected clusters, in Ethiopia.
2.4. Study variables
2.4.1. Dependent variable
The dependent variable of this study is minimum dietary diversity (met/did not meet). Based on the updated criteria, this outcome variable was categorized as meeting MDD if the children received foods from ≥5 food groups from a total of 8 food groups and did not meet if>=5 food groups were consumed during the previous day of the survey (WHO, 2017), then coded if the child did not fulfill the minimum dietary diversity score, coded as 0; and 1 for those who fulfilled the criteria. The eight food groups used to compute this outcome variable were breast milk; dairy products; cereals, roots and tubers; legumes and nuts; meat products; eggs; vitamin A-rich fruits and vegetables; and other fruits and vegetables (WHO, 2017).
2.4.2. Independent variables
Individual-level/household factors:- Maternal education, father's occupation, mother's occupation, media exposure, sex of household head, antenatal care (ANC) follow-up, nutrition counseling exposure by the health workers, family size, place of delivery and wealth index.
Community-level factors:- Place of residence, region and community poverty. The community level poverty was obtained by aggregating household wealth indexes at the cluster (community) level and categorized as high if the proportion of households with the poorest and poorer wealth index in one cluster was >50.25% and as low if the proportion was 0–50.25%.
2.5. Data management, quality control and analysis
After receiving permission from the Demographic and Health Survey (EDHS) Program, the EDHS-2016 dataset was downloaded electronically by logging at, https://www.dhsprogram.com/data/dataset_admin/login_main.cfm. Then data extraction, cleaning, selecting variables, and computing variables that are crucial for the outcome variable were performed. Moreover, coding and categorization for both continuous and categorical variables were done based on the previous literatures and their public health importance.
For this study, we used the “kid's” data set. To restore the data representatives of the survey and adjust for non-allocation of the sample strata, sample weight (V005/1000000) was used throughout the analysis. Firstly, cross-tabulation and bi-variable logistic regression were conducted, and those variables with a p-value < 0.25 were included in the multivariable logistic regression analysis. Since the EDHS data has a hierarchical structure in nature, a multi-level logistic regression analysis was performed to estimate the adjusted odds ratio.
2.6. Model constructing and fitness
After model comparison, four models containing the study variables were fitted using the melogit command in STATA version 14.0. Model 1 (null model) was fitted without independent variables to test random variability in the intercept and estimate the intra-class correlation coefficient (ICC) that evaluates the extent of variations based on minimum dietary diversity. Model 2 was developed to test the effects of individual-level variables, Model 3 was used to examine the effects of community-level variables, and then Model 4 was performed to examine the effects of both individual-level and community-level factors at the same time. The model was constructed with individuals (level 1) nested within the community (level 2). Since the models were nested, the log likelihood-ratio and Akaike's information criterion (AIC) test were used to estimate the goodness of fit of the adjusted final model in comparison to the preceding models, and the model with the lowest value was considered as the best-fit model (Akaike, 1974).
The fixed effect sizes of both individual-and community-level factors on minimum dietary diversity among children aged 6–23 months were expressed using the adjusted odds ratios (AOR) with a 95% confidence interval (CI) and a p-value of <0.05 was considered as statistically significant. Predictors were checked for multi-collinearity using the variance inflation factor (VIF) and the mean VIF was 2.16, which showed that there was no significant multi-collinearity among predictors.
2.7. Parameter estimation methods
In the multilevel logistic regression models, the random effects which are the measures of variation of minimum dietary diversity among clusters, were measured and expressed in terms of the Intra Class Correlation (ICC), Median Odds Ratio (MOR), and Proportional Change in variance (PCV) (Austin and Merlo, 2017; Merlo et al., 2005a; Merlo et al., 2005b; Weinmayr et al., 2016). The ICC was calculated to examine the degree of variation of minimum dietary diversity within clusters or among communities, MOR was the degree of variation of minimum dietary diversity among clusters in terms of odds ratio scale, and PCV was the proportion of variance verified by subsequent models.
2.8. Ethical clearance
To conduct this study, an ethical approval letter for the use of the EDHS data set gained from the Measure DHS (ORC MACRO). No information was obtained from the data set disclosed to any third person.
3. Results
In this study, weighted samples of 2,962 children aged 6–23 months old were nested into 620 clusters and included in the analysis. The mean age of the participants was 14(SD ± 5) months of age and the prevalence of minimum dietary diversity among children in Ethiopia was 12.09%. Moreover, the individual and community-level background characteristics of the study participants and the bi-variable analysis were described in Table 1.
Table 1.
Variables | Minimum Dietary Diversity |
P-value | |
---|---|---|---|
Didn't meet N (%) | Met N (%) | ||
Maternal education | |||
No education | 1625 (90.29) | 175 (9.71) | 1 |
Primary | 795 (86.72) | 122 (13.28) | 0.00 |
Secondary | 123 (78.76) | 33 (21.24) | |
Higher | 50 (55.63) | 40 (44.37) | |
Sex of household head | |||
Male | 2226 (87.44) | 320 (12.56) | 1 |
Female | 366 (88.02) | 50 (11.98) | 0.08 |
Maternal occupation | |||
No work | 1545 (89.40) | 183 (10.60) | 0.00 |
Non-agricultural | 486 (80.47) | 118 (19.53) | 1 |
Agricultural | 562 (89.13) | 68 (10.87) | 0.01 |
Father's occupation | |||
No work | 410 (85.91) | 67 (14.09) | 0.00 |
Non-agricultural | 575 (83.53) | 113 (16.47) | 1 |
Agricultural | 1609 (89.48) | 189 (10.52) | 0.00 |
Antenatal care follow-up | |||
No visit | 906 (88.60) | 117 (11.40) | 1 |
1-2 visits | 813 (89.98) | 90 (10.02) | 0.00 |
4 and above visits | 873 (84.32) | 162 (15.68) | 0.00 |
Nutrition counseling's | |||
No | 1449 (87.51) | 207 (12.49) | 1 |
Yes | 1143 (87.54) | 263 (12.46) | 0.00 |
Media exposure | |||
No | 2585 (88.10) | 349 (11.90) | 1 |
Yes | 8 (28.08) | 20 (71.92) | 0.00 |
Family size | |||
<5 | 786 (85.48) | 134 (14.3) | 1 |
5–9 | 1656 (88.54) | 214 (11.46) | 0.02 |
10 and above | 150 (87.39) | 22 (12.61) | 0.50 |
Place of delivery | |||
Home | 1696 (90.28) | 182 (9.72) | 1 |
Health facility | 897 (82.74) | 187 (17.26) | 0.00 |
Wealth index | |||
Poorest | 641 (93.53) | 44 (6.47) | 1 |
Poorer | 559 (89.85) | 63 (10.15) | 0.00 |
Middle | 576 (88.21) | 77 (11.79) | |
Richer | 473 (87.44) | 68 (12.56) | |
Richest | 344 (74.57) | 117 (25.43) | |
Place of residence | |||
Urban | 262 (72.11) | 101 (27.89) | 1 |
Rural | 2330 (89.68) | 268 (10.32) | 0.00 |
Region | |||
Pastoralist | 174 (93.97) | 11 (6.03) | 1 |
City | 69 (68.44) | 32 (31.46) | 0.00 |
Agrarian | 2350 (87.80) | 327 (12.20) | 0.03 |
Community poverty | |||
Low | 1392 (84.16) | 262 (15.84) | 1 |
High | 1201 (91.78) | 107 (8.22) | 0.000 |
3.1. Associated factors of minimum dietary diversity among children
Model-4 was the final model that included both individual and community-level variables simultaneously. Children whose mothers had higher educational status were 3.09 (AOR = 3.09, (95%CI; _1.67–5.71)), times more likely to have the minimum dietary diversity than those children with mothers who had uneducated. The odds of fulfilling the minimum dietary diversity among children whose mother's occupation was agricultural activity were 1.89 (AOR = 1.89, (95% CI; _ 1.10–3.23)) times higher than children whose mothers had no work. The odds of having minimum dietary diversity among children from the richest households were 5.93 times (AOR = 5.93, (95%CI; _2.69–13.08)), from richer households were 3.98 times (AOR = 3.98, (95%CI; _ 2.04–7.76)) higher as compared with those children from the poorest households. Children residing in agrarian areas 38% (AOR = 0.62, (95%CI; _ 0.39–0.98)) times less likely than children living in pastoralist areas to meet minimum dietary diversity (Table 2).
Table 2.
Variables |
Model 1 |
Model 2 |
Model 3 |
Model 4 |
---|---|---|---|---|
Individual level factors | AOR(95%CI) | AOR(95%CI) | AOR(95%CI) | P-Value |
Sex of household head | ||||
Male | 1 | 1 | ||
Female | 0.66 (0.43–1.01) | 0.62 (0.40–0.95) | 0.03 | |
Maternal education | ||||
No education | 1 | 1 | ||
Primary | 1.30 (0.89–1.91) | 1.31 (0.89–1.93) | 0.15 | |
Secondary | 1.71 (1.01–2.89) | 1.68 (0.99–2.83) | 0.05 | |
Higher | 3.29 (1.78–6.07) | 3.09 (1.67–5.71) | 0.00 | |
Mother's occupation | ||||
No work | 1.01 (0.69–1.48) | 0.98 (0.67–1.43) | 0.92 | |
Non-agricultural | 1 | 1 | ||
Agricultural | 1.87 (1.10–3.19) | 1.89 (1.10–3.23) | 0.01 | |
Wealth index | ||||
Poorest | 1 | 1 | ||
Poorer | 2.15 (1.11–4.15) | 2.27 (1.17–4.40) | 0.01 | |
Middle | 2.72 (1.42–5.23) | 2.99 (1.54–5.79) | 0.00 | |
Richer | 3.58 (1.85–6.92) | 3.98 (2.04–7.76) | 0.00 | |
Richest | 6.97 (3.59–3.51) | 5.93 (2.69–13.08) | 0.00 | |
Community-level factors | ||||
Region | ||||
Pastoralist | 1 | 1 | ||
City | 1.61 (0.97–2.66) | 0.98 (0.98–1.65) | 0.940 | |
Agrarian | 1.17 (0.78–1.77) | 0.62 (0.39–0.98) | 0.045 |
Notice; - P-value <0.05, statistically significant.
3.2. Random effect analysis
Model 1 (null-model) showed that 2.25 of total variance on minimum dietary diversity occurred at the cluster level and also had the highest median odds ratio value, which was 4.18. That means when randomly selecting an individual from the cluster with the highest odds ratio of having minimum dietary diversity had 4.18 times higher than not fulfilling the minimum dietary diversity. Variability among clusters decreased from the null model (ICC = 41%) to model four (final model) (ICC = 22%). In addition, the highest proportional change in variance (PCV = 56.62%) was seen in model-4, which describes 56.62% of the community-level variation on fulfilling minimum dietary diversity as indicated by mixed factors at the individual and community levels. So, the effect of clustering is statistically significant in model 4 (Table 3).
Table 3.
Measure of variation | Model 1 | Model 2 | Model 3 | Model 4 |
---|---|---|---|---|
Variance | 2.25 | 1.02 | 1.3 | 0.98 |
ICC (95%CI) | 0.41 (0.32–0.50) | 0.23 (0.14–0.35) | 0.28 (0.20–0.38) | 0.22 (0.14–0.34) |
PCV % | Reference | 54.50 | 42.21 | 56.62 |
MOR (95%CI) | 4.18 (3.09–5.28) | 2.63 (1.90–3.35) | 2.97 (2.26–3.68) | 2.57 (1.86–3.27) |
Model-fitness | ||||
Log likelihood | -971.06 | -694.64 | -924.73 | -691.46 |
AIC | 1946.12 | 1431.29 | 1861.47 | 1430.92 |
Abbreviations: ICC; Intra-class correlation coefficient, PCV; Proportional change in variance; MOR; Median odds ratio: AIC; Akaike's information criterion.
3.3. Dietary diversity
Of the total children who consumed dairy products, 24 h prior to the data collection period, 36.39% of them were between the ages of 12–17 months (Table 4).
Table 4.
Food groups | Children's age in month |
|||
---|---|---|---|---|
6–11 months |
12–17 months |
18–23 months |
||
Frequency (%) | Frequency (%) | Frequency (%) | ||
Breast milk | Yes | 1002 (38.29) | 993 (37.98) | 621 (23.73) |
No | 56 (16.10) | 97 (27.95) | 194 (55.95) | |
Dairy products | Yes | 397 (34.80) | 415 (36.39) | 329 (28.80) |
No | 660 (36.26) | 675 (37.06) | 486 (26.68) | |
Grains, Roots, Tubers | Yes | 523 (27.90) | 747 (39.67) | 609 (32.43) |
No | 535 (49.14) | 347 (31.87) | 207 (18.99) | |
Eggs | Yes | 150 (29.57) | 200 (39.32) | 158 (31.11) |
No | 907 (36.96) | 891 (36.28) | 656 (26.75) | |
Meats | Yes | 47 (18.14) | 124 (48.30) | 86 (33.56) |
No | 1011 (37.37) | 966 (35.71) | 728 (26.92) | |
Legumes and nuts | Yes | 190 (30.12) | 239 (37.87) | 202 (32.00) |
No | 867 (37.21) | 851 (36.52) | 612 (26.28) | |
Vitamin A fruits and vegetables | Yes | 206 (24.90) | 353 (42.58) | 269 (32.52) |
No | 851 (39.89) | 738 (34.56) | 645 (25.55) | |
Other fruits and vegetables | Yes | 82 (27.15) | 117 (38.72) | 103 (34.13) |
No | 975 (36.66) | 974 (36.59) | 712 (26.75) | |
MDD | Met | 95 (25.85) | 184 (49.86) | 90 (24.29) |
Did not meet | 962 (37.10) | 906 (34.94) | 725 (27.96) |
4. Discussion
Our study revealed the prevalence and individual and community-level factors of minimum dietary diversity among children aged 6–23 months in Ethiopia. The prevalence of children who met the minimum dietary diversity was 12.09 %. This finding is similar with studies conducted in northwest Ethiopia (Beyene et al., 2015) and the EDHS-2016 report (Central Statistical Agency - CSA/Ethiopia & ICF, 2017), but lower than different studies done in Wolyita (Mekonnen et al., 2017), Addis Ababa (Solomon et al., 2017), Myanmar (Mya et al., 2019), Bangladesh (Blackstone and Sanghvi, 2017) and Ghana (Issaka et al., 2015). These discrepancies might be due to the small sample size of studies conducted in Ethiopia and the socio-economic and cultural differences with Bangladesh and Ghana. In this study, the minimum dietary diversity among children was associated with both individual and community-level factors.
In the present study, children whose mothers’ had secondary and higher educational status were more likely to meet the minimum dietary diversity which compliments with the findings of studies conducted in northwest Ethiopia (Beyene et al., 2015) and Bangladesh (Blackstone and Sanghvi, 2018), this association might be because of the levels of understanding regarding to the importance of dietary diversity for children among educated women are relatively good.
Regarding maternal occupation, children whose mother's occupation was agricultural activity were positively associated with minimum dietary diversity, which is supported by a study done in Bangladesh (Blackstone and Sanghvi, 2018). Since the majority of study participants were from rural areas, the association can be explained by the fact that mothers participating in agricultural activities may have better access to different agricultural products, which are crucial to feeding their children. In addition, mothers who are involved in agricultural activities might have enough time to follow the feeding patterns of their children than their counterparts. Regarding the sex of the household head, those children who lived with a female household head were negatively associated with the fulfillment of minimum dietary diversity. This may be due to low economic status of the female household head.
Moreover, this study revealed that the infants and young children in the middle, richer, and richest wealth indexes were positively associated with the minimum dietary diversity. This finding is consistent with the existing studies conducted in Addis Ababa, Ethiopia (Solomon et al., 2017) and Ghana (Issaka et al., 2015). The existing association may be due to the economic advantage of children living in households with enough resources to have good access, availability, and utilization of diversified foods.
In this study, we found that region, a community-level factor, was found to be significantly associated with minimum dietary diversity among children. Children residing in agrarian areas were less likely to get diversified foods than children living in pastoralist areas. This might be due to low consumption of diversified foods in agrarian areas.
The strength of this study is that we used the required statistical analysis because of the hierarchical nature of the data, and the data is nationally representative. The study is not free of limitations; it is prone to recall bias due to participant self-report and a one-day 24-hour recall that did not identify the children's usual dietary habits.
5. Conclusions
This study identified that the prevalence of the minimum dietary diversity was very low among children aged 6–23 months. Both individual and community-level factors determine the magnitude of minimum dietary diversity. Individual/household factors like maternal education, sex of the household head, maternal occupation, and household wealth index were the significant determinants of minimum dietary diversity. From community-level factors, the region was significantly associated with minimum dietary diversity. Therefore, multi-sectorial collaboration is highly recommended to strengthen the existing interventions that increase agricultural productivity, behavioral change communication on nutritional activities, intensive nutrition education, and involvement of women in different income-generating activities to increase the consumption of diversified foods. Also, giving special attention to children whose mothers have no formal education, female household heads, and women with no work. Moreover, a strong commitment by the government, stakeholders, and policymakers is needed to ensure the consumption of adequate diversified foods.
Declarations
Author contribution statement
Temesgen Muche: Conceived and Performed the experiments; Analyzed and interpreted the data; Wrote the paper.
Sewitemariam Desalegn, Helen Ali, Moges Mareg, Daniel Sisay, Mahlet Birhane, Robel Hussen Kabthymer: Performed the experiments; Wrote the paper.
Funding statement
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Data availability statement
Data will be made available on reasonable request.
Declaration of interests statement
The authors declare no conflict of interest.
Additional information
No additional information is available for this paper.
Acknowledgements
We authors gratefully thank the DHS program for permitting us to use the Ethiopian Demography and Health Survey (EDHS) data set for conducting this study. And our gratitude goes to Dr.Tadesse Alemu Zerfu for his contribution in conceptualization, writing, editing and approval of the final draft of this manuscript.
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