Comparing AN to BN, higher proportions of borderline personality disorder were found for BN (31% versus 14%). Studies of Cluster C (dependent, avoidant, obsessive-compulsive, and passive-aggressive) personality disorders demonstrate a prevalence of about 45% for both AN and BN disorders. Eating disorders also frequently concur with menstrual cycle difficulties, fertility and pregnancy problems, and diabetes mellitus (Pearlstein, 2002).
Kaye, Bulik, Thornton, Barbarich, and Masters (2004) conducted a study of comorbidity of anxiety disorders with AN and BN. For this study 97 individuals diagnosed with AN, 282 individuals diagnosed with BN, and 293 patients diagnosed with both were included. Patients were given survey instruments that assessed lifetime incidence of anxiety disorders. Findings showed that 41% of patients had lifetime incidence of obsessive-compulsive disorder and 20% had social phobia. Two-thirds of patients had one or more lifetime anxiety disorder. Most patients reported the onset of obsessive-compulsive disorder, social phobia, specific phobia, and generalized anxiety disorder in childhood. Those with no anxiety disorder diagnosis but a history of eating disorder were anxious, perfectionist, and harm avoidant and the presence of the eating disorder or an anxiety disorder increased these symptoms in all patients. Findings were compared to a group of healthy women (n = 694) recruited by local advertisement who matched with those meeting diagnostic criteria in terns of age range, ethnicity, and educational levels completed.
Rogers and Petrie (2001) also studied correlates of AN and BN including obsessiveness, dependency, over controlled hostility, assertiveness, locus of control, and self-esteem. For this study 97 female undergraduates from a university were assessed. The mean age for the study participants was 22.17 years. Of this group, 72% were Caucasian or non-Hispanic, 10% were Asian American, 7%...
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