with the max rescaled r-square, and the c statistic corresponding to the receiver operating curve. The c statistics can be thought of similarly to a grading scale, with .70 considered adequate, .8 considered good, etc. [30] Because there were so few FC cases they were grouped with SRM cases. Separate runs of analysis were conducted with centering the variables (using Proc Standard in SAS) to avoid spurious associations between reported familial liability, maltreatment, and offspring outcome. Centering did not significantly alter the results for either sample.
