Definitions of risk:

For the initial intervention study (CHIC I), comparing the classroom-based and risk-based approaches, the following definitions were used to describe risk factors for future CVD in the children. In the risk-based intervention schools, only children with any of these risks received sessions targeted at their specific risk factor(s).  Thus a child in a risk-based intervention school could be assigned to one, two, or three types of intervention sessions each week for the 8 weeks, depending on how many risk factors he had.