Factors associated with self-medication in children and the decomposition of rural-urban disparities in China

Background Self-medication in children is one of the greatest threats to children health in China. Objectives The purpose of this study was to examine the potential factors associated with self-medication in children and explore rural-urban disparities. Methods A total of 2798 children enrolled in the study. Informed consent was obtained from each primary caregiver following a detail explanation about the purpose of the study. Multivariable logistic regression analysis and Oaxaca-Blinder decomposition analysis were used. Results The results showed that 38.2% primary caregivers of rural areas self-medicated their children, compared to 18.7% of those in urban areas. The urban primary caregivers with college or above education were more likely to self-medicate their children, while rural primary caregivers with college or above education were less likely to self-medicate their children. Children having unhealthy eating habits were more likely to have been self-medicated by their primary caregivers in urban and rural areas. Urban primary caregivers who spend more than 10 min from home to the nearest medical institution were more likely to self-medicate their children. In rural areas, children aged 3-6 years old, primary caregivers with monthly household income per capita of 1001-3000 Yuan, and children with chronic diseases are another set of enabling factors which impacted on self-medication. Unhealthy eating habits of children were the largest contributor to the rural-urban self-medication gap. Conclusions Children's factors explained the largest portion of the rural-urban difference in self-medication among children. The evidence presented in this study suggests that public health policies addressing rural-urban differences in children' s factors could serve as an effective method for reducing rural-urban disparities in self-medication among children.