Social and environmental determinants of child health in Mongolia across years of rapid economic growth: 2000-2010

Social determinants of child malnutrition outcomes: Evidence from CHNS in China

China is committed to reduce child malnutrition outcomes (CMO) rates to less than 5 % by 2030 in order to meet the Sustainable Development Goal (SDG). Yet, this is still an enormous challenge for China, particularly in disadvantaged areas, due to regional and urban-rural disparities. Using China Health and Nutrition Survey (CHNS) data from 1991 to 2015 and fixed-effect models, this study investigates the social determinants of stunting (n = 4012) measured by height-for-age z score (HAZ) and wasting (n = 4229) measured by weight-for-height z score (WHZ) in children under the age of five. According to the empirical findings, the significant social determinants of child stunting encompassed whether the child is insured (p < 0.01), maternal education level (primary school (p < 0.01) low middle school (p < 0.01); vocational school (p < 0.01)), maternal employment status (p < 0.05), mother's average working days (p < 0.05), average household per capita income (p < 0.01), household asset index (p < 0.01), urbanization index living in a community (medium (p < 0.05); higher (p < 0.01); highest (p < 0.01)) and living regions (west (p < 0.01); northeast (p < 0.05)). Children's maternal employment status (p < 0.05), mother's average working days (p < 0.05), living areas (p < 0.05) and living regions (central (p < 0.01); west (p < 0.01); north-east (p < 0.05)) are the significant factors impacting child wasting. Furthermore, the interaction impact between maternal employment and have one additional working day per week is positive. To attain SDGs, the Chinese government should priorities lowering stunting and wasting among 5-year-olds in the western region, particularly in impoverished regions. Also, it is possible to develop tailored policies for the growth and development of children under the age of five by addressing pertinent socio-economic factors.

Social determinants of stunting in Malay children aged <5 years in Malaysia

OBJECTIVE

This study aims to assess social determinants of stunting among children aged <5 y within the Malay ethnicity in Malaysia.

METHODS

This study used data from the National Health and Morbidity Survey 2016: Maternal and Child Health. It includes a sample of 10 686 children, ages 0 to 59 mo, of Malay ethnicity. Height-for-age z score was determined based on the World Health Organization Anthro software. A binary logistic regression model was used to examine the association between the selected social determinants and the occurrence of stunting.

RESULTS

About 22.5% of children aged <5 y of Malay ethnicity were stunted. For those ages 0 to 23 mo, stunting is more prevalent in boys, in rural areas, and in those who have screen exposure, whereas a reduction of stunting was observed for those children whose mothers work in the private sector and in those who consume formula milk and meat. As for those ages 24 to 59 mo, there was a higher prevalence of stunting for those with self-employed mothers and reduced prevalence in children with hygienic waste disposal practices as well as those who play with toys.

CONCLUSIONS

The prevalence of stunting among children of Malay ethnicity aged <5 in Malaysia necessitates immediate intervention. It is pertinent to facilitate early identification of those children at risk of stunting for additional care to promote healthy growth.

Vaccine equity in low and middle income countries: a systematic review and meta-analysis

BACKGROUND

Evidence to date has shown that inequality in health, and vaccination coverage in particular, can have ramifications to wider society. However, whilst individual studies have sought to characterise these heterogeneities in immunisation coverage at national level, few have taken a broad and quantitative view of the contributing factors to heterogeneity in immunisation coverage and impact, i.e. the number of cases, deaths, and disability-adjusted life years averted. This systematic review aims to highlight these geographic, demographic, and sociodemographic characteristics through a qualitative and quantitative approach, vital to prioritise and optimise vaccination policies.

METHODS

A systematic review of two databases (PubMed and Web of Science) was undertaken using search terms and keywords to identify studies examining factors on immunisation inequality and heterogeneity in vaccination coverage. Inclusion criteria were applied independently by two researchers. Studies including data on key characteristics of interest were further analysed through a meta-analysis to produce a pooled estimate of the risk ratio using a random effects model for that characteristic.

RESULTS

One hundred and eight studies were included in this review. We found that inequalities in wealth, education, and geographic access can affect vaccine impact and vaccination dropout. We estimated those living in rural areas were not significantly different in terms of full vaccination status compared to urban areas but noted considerable heterogeneity between countries. We found that females were 3% (95%CI[1%, 5%]) less likely to be fully vaccinated than males. Additionally, we estimated that children whose mothers had no formal education were 28% (95%CI[18%,47%]) less likely to be fully vaccinated than those whose mother had primary level, or above, education. Finally, we found that individuals in the poorest wealth quintile were 27% (95%CI [16%,37%]) less likely to be fully vaccinated than those in the richest.

CONCLUSIONS

We found a nuanced picture of inequality in vaccination coverage and access with wealth disparity dominating, and likely driving, other disparities. This review highlights the complex landscape of inequity and further need to design vaccination strategies targeting missed subgroups to improve and recover vaccination coverage following the COVID-19 pandemic.

TRIAL REGISTRATION

Prospero, CRD42021261927.

Stunting in childhood: an overview of global burden, trends, determinants, and drivers of decline

BACKGROUND

Progress has been made worldwide in reducing chronic undernutrition and rates of linear growth stunting in children under 5 y of age, although rates still remain high in many regions. Policies, programs, and interventions supporting maternal and child health and nutrition have the potential to improve child growth and development.

OBJECTIVE

This article synthesizes the available global evidence on the drivers of national declines in stunting prevalence and compares the relative effect of major drivers of stunting decline between countries.

METHODS

We conducted a systematic review of published peer-reviewed and gray literature analyzing the relation between changes in key determinants of child linear growth and contemporaneous changes in linear growth outcomes over time.

RESULTS

Among the basic determinants of stunting assessed within regression-decomposition analyses, improvement in asset index score was a consistent and strong driver of improved linear growth outcomes. Increased parental education was also a strong predictor of improved child growth. Of the underlying determinants of stunting, reduced rates of open defecation, improved sanitation infrastructure, and improved access to key maternal health services, including optimal antenatal care and delivery in a health facility or with a skilled birth attendant, all accounted for substantially improved child growth, although the magnitude of variation explained by each differed substantially between countries. At the immediate level, changes in several maternal characteristics predicted modest stunting reductions, including parity, interpregnancy interval, and maternal height.

CONCLUSIONS

Unique sets of stunting determinants predicted stunting reduction within countries that have reduced stunting. Several common drivers emerge at the basic, underlying, and immediate levels, including improvements in maternal and paternal education, household socioeconomic status, sanitation conditions, maternal health services access, and family planning. Further data collection and in-depth mixed-methods research are required to strengthen recommendations for those countries where the stunting burden remains unacceptably high.

Complementary feeding practices and associated factors among Mongolian children 6-23 months of age

Little is known about factors influencing children's dietary intake in Mongolia, a country undergoing rapid nutrition transition. Using nationally representative data from the 2017 Mongolia National Nutrition Survey, we assessed the nutritional status of children aged <2 years and examined household, maternal, and child factors associated with feeding practices among children aged 6–23 months (n = 938). Multivariable logistic regression models were used to identify predictors of minimum meal frequency (MMF), minimum dietary diversity (MDD), and minimum acceptable diet (MAD). The prevalence of child stunting (length/height‐for‐age Z‐score < −2 SD) was 6.3%, and the prevalence of overweight (weight‐for‐height Z‐score > +2 SD) was 16.8%. The prevalence of anaemia and iron deficiency was 39.0% and 32.2%, respectively, and 73.5% and 85.5% of children had inadequate vitamin A and vitamin D status, respectively. Of children aged 6‐23 months, 92.1% (n = 864) had MMF, 49.6% (n = 465) had MDD, and 43.8% (n = 411) achieved MAD. Increased household wealth was positively associated with all three indicators, whereas severe food insecurity was not associated with MMF, MDD, or MAD. Older child age (odds ratio, 95% CI: 1.09 [1.06, 1.12]; p < .001) and maternal dietary diversity (odds ratio, 95% CI: 2.36 [1.67, 3.34]; p < .001) were positively associated with child MDD. Nutrition‐specific and nutrition‐sensitive efforts are needed to improve the dietary quality of infants and young children in Mongolia and reduce the high burdens of child micronutrient deficiency and overweight in the country.