Table 2.

Results of stepwise multiple regression analysis of PHQ-9

Positive variable selected	Beta	p-value	VIF
Age	−0.100	0.016	1.062
Employment status	0.096	0.022	1.061
Cyclothymic	0.278	< 0.001	1.656
Hyperthymic	−0.189	< 0.001	1.067
Anxious	0.323	< 0.001	1.639
CATS (neglect)	0.119	< 0.001	1.268
Adjusted R2=0.401	F=41.187	< 0.001

Notes: Dependent factor: PHQ-9 summary score. Independent factors: age, sex (men = 0, women = 1), education years, employment status (nonemployed = 0, employed = 1), current marital status (unmarried = 0, married = 1), living alone (no = 0, yes = 1), number of offspring, comorbidity of physical disease (no = 0, yes = 1), first-degree relative with psychiatric disease (no = 0, yes = 1), sexual abuse, neglect, and punishment scores of CATS, depressive, cyclothymic, hyperthymic, anxious, and irritable temperament scores of TEMPS-A and SSS score.

Abbreviations: Beta, standardized partial regression coefficient; VIF, variance inflation factor; PHQ-9, Patient Health Questionnaire-9; SSS, subjective social status; TEMPS-A, Temperament Evaluation of Memphis, Pisa, Paris, and San Diego-autoquestionnaire; CATS, Child Abuse and Trauma Scale.