TABLE 3.

Regression analysis of mediating model of social support.

Variables	Model 1 (Depression)			Model 2 (Social support)			Model 3 (Depression)
	β	t	95% CI	β	t	95% CI	β	t	95% CI
Living arrangements	0.55***	3.53	[0.26, 0.90]	−1.25**	–2.90	[−2.68, −0.52]	0.45**	2.87	[0.14, 0.76]
Social support							−0.08***	–16.93	[−0.09, −0.07]
Gender (0 = Female)
Male	0.57***	4.26	[0.31, 0.83]	0.91	2.04	[0.04, 1.79]	0.64***	4.97	[0.39, 0.89]
Age (0 = 60∼69)
70∼79	–0.23	–1.84	[−0.48, 0.02]	–0.04	–0.10	[−0.88, 0.80]	–0.24	–1.93	[−0.48, 0.01]
≥80	–0.51	–1.97	[−1.02. 0.01]	1.16	1.31	[−0.57, 2.86]	–0.42	–1.69	[−0.91, 0.07]
Residence (0 = Rural)
Urban	–0.19	–1.36	[−0.45, 0.08]	0.34	0.73	[−0.57, 1.24]	–0.16	–1.21	[−0.42, 0.10]
Education level (0 = Illiterate)
Primary school	−0.36**	–2.32	[−0.67, −0.06]	–0.05	–0.10	[−1.08, 0.98]	−0.36*	–2.43	[−0.66, −0.07]
Middle school	−0.56**	–3.37	[−0.88, −0.23]	0.57	1.12	[−0.53,1.66]	−0.51**	–3.21	[−0.83, −0.20]
High school and above	−0.65**	–3.23	[−1.05, −0.26]	0.58	0.86	[−0.75,1.91]	−0.61**	–3.11	[−0.99, −0.22]
Employment status (0 = Yes)
No	0.24	1.80	[−0.02, 0.50]	–0.60	–1.32	[−1.48, 0.29]	0.19	1.50	[−0.06, 0.45]
Annual household income (0 = Q1)
Q2	−0.26*	–2.14	[−0.49, −0.02]	0.73	1.81	[−0.06, 1.51]	–0.20	–1.73	[−0.43, 0.03]
Q3	−3.47***	–18.71	[−3.84, −3.11]	6.10***	9.76	[4.88, 7.33]	−3.00***	–16.52	[−3.35, −2.64]
Q4	–0.44	–1.56	[−0.98, 0.11]	0.67	0.70	[−1.17, 2.50]	–0.38	–1.43	[−0.91, 0.14]
No. of chronic diseases (0 = None)
1	0.42**	2.79	[0.13, 0.72]	–0.56	–1.09	[−1.56, 0.44]	0.38*	2.60	[0.09, 0.67]
≥2	1.23***	8.08	[0.93, 1.53]	–1.23	–2.39	[−2.24, −0.22]	1.14***	7.72	[0.85, 1.43]
Self-reported health status (0 = Poor)
Fair	−2.40***	–12.66	[−2.77, −2.03]	3.46***	5.42	[2.21, 4.71]	−2.13***	–11.59	[−2.49, −1.77]
Good	−3.72***	–20.36	[−3.84, −3.11]	6.10***	9.76	[4.88, 7.33]	−3.00***	–16.52	[−3.35, −2.64]
R 2	0.17			0.05			0.21
F	52.23***			12.12***			424.09***

***P < 0.001, **P < 0.01, *P < 0.05; Q: quartile.