Table 3.

Factors associated with psychological disorder (GHQ12 score ≥ 3)

Variables	Univariate analyses			Multivariate analyses
	aOR	95%CI	p	aOR	95%CI	p
Gender
female	reference
male	0.74	0.65–0.83	< 0.001	1.31	1.13–1.52	< 0.001
Age
< 30	reference
30–49	0.32	0.19–0.54	< 0.001	0.90	0.49–1.65	0.732
50–69	0.33	0.25–0.44	< 0.001	0.77	0.56–1.08	0.131
≥70	0.48	0.42–0.54	< 0.001	0.69	0.60–0.79	< 0.001
Education
primary school or below	reference
junior high school	2.51	2.09–3.03	< 0.001	–	–	–
senior high school	3.06	1.93–5.18	0.5342	–	–	–
college and up	3.56	1.56–10.25	0.1871	–	–	–
Employment
unemployment	reference
full-time	0.47	0.34–0.64	< 0.001	0.36	0.27–0.48	< 0.001
part-time	0.65	0.43–0.97	0.03	0.39	0.26–0.57	< 0.001
retired	2.48	1.99–3.09	< 0.001	0.38	0.29–0.50	< 0.001
Profession
peasants	reference
factory workers	0.40	0.28–0.56	< 0.001	0.89	0.59–1.35	0.587
businessmen	0.25	0.14–0.45	< 0.001	0.85	0.44–1.65	0.624
othersa	1.20	1.06-1.36	0.004	1.35	1.16–1.57	< 0.001
Quality of life
physical health	0.68	0.66–0.69	< 0.001	0.83	0.80–0.85	< 0.001
phycological health	0.60	0.58–0.62	< 0.001	0.74	0.71–0.77	< 0.001
social relationship	0.58	0.56–0.60	< 0.001	0.85	0.80–0.89	< 0.001
environment	0.80	0.78–0.81	< 0.001	0.97	0.95–0.99	0.009

^aothers include: teacher, student, driver, office clerk, civil servant, medical staff and unemployed