Table 1 shows the univariate relationships for the predictor variables, comparing subjects who relapsed and subjects who maintained their abstinence. There was one center difference for age (F2,42 = 5.12, P = .01), with Cornell having older subjects (Cornell, 34.4 years; Minnesota, 27.4 years; Rutgers, 25.2 years). By week 34 (17 weeks after the end of CBT), 21 subjects had resumed bingeing and/or purging, with a mean level of 8.3 binges per month(range, 0-64) and 12.1 purges per month (range, 0-64). Most of these participants met criteria for eating disorder not otherwise specified (17 patients [81%]); the remainder met full criteria for bulimia nervosa. Subjects who had resumed bulimic behaviors had a mean duration of 5.5 years less than those who maintained abstinence (F1,42 = 5.09, P = .03). Subjects who relapsed also had higher scores on the post-CBT YBC-EDS (F1,41 =13.6, P<.001), indicating a higher level of preoccupation and ritualization of eating; higher scores on the motivation change subscale of the YBC-EDS, indicating less motivation for change (F1,41 =8.4, P = .006); and higher post-CBT restraint scores(F1,40 = 11.0, P = .002). Those who had relapsed had been abstinent for a shorter amount of time before the end of CBT (F1,42 = 6.3, P = .02). Figure 1 shows that the group who maintained abstinence had a consistent pattern of abstinence by 10 to 12 weeks of treatment. When the univariate tests were adjusted for multiple comparisons, the total YBC-EDS score and the Three-Factor Eating Questionnaire restraint scale remained significant. Comorbid symptoms such as depression or obsessionality were not related to outcome (Table 2). There were no significant differences in the presence or absence of comorbid symptomatology between those who relapsed and those who maintained abstinence.