CSW also follow CLP by investigating the role of chronic conditions in the gradient in health. The American evidence indicates that poor children are more likely than wealthy children to experience some (although not all) chronic health conditions; these differences in the prevalence of chronic conditions across income groups can explain part of the association between income and health status. In addition, among US children with the same health conditions, those who are richer are reported to be in better health than those who are poorer, suggesting that the chronic conditions of wealthier children are less severe, or are.