Subtyping Women With Bulimia Nervosa Along Dietary and Negative Affect Dimensions: Further Evidence of Reliability and Validity JOURNAL OF CONSULTING AND CLINICAL PSYCHOLOGY Stice, E., Bohon, C., Marti, C. N., Fischer, K. 2008; 76 (6): 1022-1033


Studies have found that individuals with bulimia nervosa can be classified into dietary and dietary-negative affect subtypes and that the latter exhibit greater eating pathology, psychiatric comorbidity, and functional impairment; a more protracted clinical course; and a worse treatment response. In this report, the authors describe 2 prospective studies that found that young women with threshold (n = 48) and subthreshold (n = 83) bulimic pathology can be classified into dietary and dietary-negative affect subtypes; that two subtyping approaches produced similar results (mean kappa = .94); that the subtyping distinction showed 4-week test-retest reliability (kappa = .61); and that the dietary-negative affect subtype showed greater eating pathology, emotional distress, functional impairment, treatment seeking, and lower likelihood of recovery over 6-month and 3-year follow-ups than the dietary subtype. The dieting-negative affect subtyping distinction evidenced greater test-retest reliability and concurrent and predictive validity than did the purging-nonpurging subtyping distinction. The additional evidence for the reliability and validity of this subtyping scheme, particularly the prognostic utility, suggests it is worth additional inquiry.

View details for DOI 10.1037/a0013887

View details for Web of Science ID 000261113000011

View details for PubMedID 19045970