Malnutrition in children under five years in a squatter settlement of Karachi: a case-control study.

BACKGROUND: Multidimensional factors such as socioeconomic or environmental factors influence malnutrition. Several studies have strongly linked malnutrition to poverty. Some international studies point to the worse nutritional status of urban slum children than rural children. Limited data is available regarding the nutritional status of slum children in Karachi. This study aimed to determine characteristics of malnourished children in an urban squatter settlement in Karachi, Pakistan.

METHODS: A case- control study was carried out at the primary healthcare center of a squatter settlement in Karachi, Pakistan. All children under five years of age visiting the primary healthcare center were recruited consecutively. Cases were defined as children with z scores < -2 SD of WHO reference measurements of WFA, HFA, WFH and OFC. The controls were similar in terms of age group but had z scores between - 2SD and + 2SD. A self- structured risk factor questionnaire that included information about sociodemographic, economic and environmental factors as well as child- related characteristics was researcher administered via face-to-face interviews with the mothers of children. Univariate and multivariate logistic regression analyses were conducted. Crude and adjusted odds ratios were calculated with 95% confidence interval.

RESULTS: A total of 280 participants including 140 cases and 140 controls participated in the study. A larger proportion of the sample originated from individuals with low household income. After adjusting for the confounders, childhood malnutrition was significantly associated with a low education level of father (aOR 4.86, 95% CI 2.23-10.60), a monthly income less than 25,000 PKR (89 USD) per month (aOR 7.13, 95% CI 1.67-30.54), pour pit latrine type of toilet (aOR 4.41, 95% CI 2.67-7.3), less than six months of exclusive breast feeding (aOR 3.578, CI 1.58-8.08), inappropriate weaning age (aOR 3.71, 95% CI 1.53-9).

CONCLUSION: Malnutrition in children under five years of age in the community is associated with low family income, low paternal education, poor toilet facilities, lack of exclusive breastfeeding and inappropriate weaning age. The implementation of poverty reduction programs, sanitation provision at affordable rates, community-based breast feeding and weaning education intervention are urgently required to efficiently improve children's nutritional status.