Table 1.

Population Attributable Risk Proportions for Effects of Co-occurring Psychopathology and Related Factors on Persistence of Major Depressive Disorder Over Three Years

Predictor Variable	Percent with MDDa at Follow-up	Percent without MDD at Follow-up	Population Attributable Risk Proportion
Personality Disorders
Antisocial	20.29	15.29	24.64
Avoidant	23.12	14.50	37.28
Borderline	28.90	12.33	57.34
Dependent	22.42	15.20	32.20
Histrionic	24.18	14.90	38.38
Narcissistic	14.60	15.41	−5.55
Obsessive-compulsive	19.33	14.42	25.40
Paranoid	21.78	14.19	34.85
Schizoid	26.93	14.02	47.94
Schizotypal	26.07	14.26	45.30
Axis I Disorders
Dysthymic disorder	22.79	14.01	38.53
Any anxiety disorder	22.21	12.58	43.36
Any substance use disorder	15.33	15.32	00.07
Other Predictors
Family history depression	15.93	14.41	09.54
Family history substance use or antisocial personality	15.79	14.72	06.78
Depression treatment Wave 1	23.75	12.52	47.28
Onset of MDD < age 15	17.57	14.72	16.22

^aMDD = major depressive disorder