Figure 2.

Classification statistics for predicting anal sex with a casual male partner across the range of self-reported likelihood of having sex the next day. The false negative rate represents the proportion of false negatives (i.e., those who had sex but were not predicted to based on their likelihood score) over all actual positives (i.e., people who had sex). Precision represents the rate of true positives (i.e., people who were predicted to have sex based on their likelihood scores and actually did) over all predicted positives (i.e., people who were predicted to have sex based on their likelihood score.