are Social/Interpersonal problems (“Social” in graph) and Inability/Persistent desire to quit (“Quit” in graph). Slopes for the DUI group (dotted lines) were steeper for both these criteria, showing greater discrimination among individuals with than among those without DUIs. The intersection of the lines representing “More,” “Quit,” and “Social” for individuals with DUIs (dotted lines) with the lines for those without DUIs (solid lines) illustrates the greater discrimination of these criteria among individuals with DUIs. Information curves representing the aggregate information gleaned from the 5 criteria showing DCF are displayed in Figure 2, by DUI group and gender. Measurement precision of these criteria was greater in the DUI groups (higher peaks).
