NOTES: PROSPER N=766 students (unweighted) with some variation across waves. NLSY97 N=8,984 youth, but 380 excluded due to unknown urban/rural status. Grades 6, 7, 8, and 9 in PROSPER correspond to ages 12, 13, 14, and 15 in the NLSY97. NLSY97 data are weighted to represent adolescents at each age nationally. Urban/rural defined by Census, based on respondent’s 1997 residence. PROSPER includes disproportionately more Hispanics and fewer blacks than NLSY97.