Objectives: Research on child labor and its effect on health has been limited. We sought to determine the impact of child labor on children's health by correlating existing health indicators with the prevalence of child labor in selected developing countries.
Methods: We analyzed the relationship between child labor (defined as the percentage of children aged 10 to 14 years who were workers) and selected health indicators in 83 countries using multiple regression to determine the nature and strength of the relation. The regression included control variables such as the percentage of the population below the poverty line and the adult mortality rate.
Results: Child labor was significantly and positively related to adolescent mortality, to a population's nutrition level, and to the presence of infectious disease.
Conclusions: Longitudinal studies are required to understand the short- and long-term health effects of child labor on the individual child.