Table 4.

Linear regression of factors associated with the depression.

Factors	Unstandardized Coefficients		Standardized Coefficients	t	p-Value	95%CI for β
	β	SE	β
Constant	12.173	3.359	-	3.624	<0.001	(5.555, 18.790)
Female (ref: Male)	1.875	0.608	0.175	3.085	0.002	(0.678, 3.073)
Education level (ref: Less than elementary school)
Elementary school	−1.295	0.844	−0.120	−1.534	0.126	(−2.959, 0.369)
Middle school	−2.311	0.937	−0.193	−2.465	0.014	(−4.157, −0.464)
High school and above	−2.451	1.231	−0.148	−1.992	0.048	(−4.876, −0.027)
Per capita annual income of household (ref: <750, $)
750–1500	−1.932	0.993	−0.149	−1.945	0.053	(−3.889, 0.025)
≥1500	−2.615	0.999	−0.231	−2.616	0.009	(−4.584, −0.646)
Social support scores	−0.126	0.041	−0.181	−3.097	0.002	(−0.207, −0.046)
Care burden scores	0.113	0.020	0.338	5.617	<0.001	(0.074, 0.153)

Notes: R² = 0.34, F = 7.51, p < 0.001.