Table 4.

Hierarchical Linear Regression Analyses of the Factors Associated with Depression

Variables	Depression
	Model 1(β)	Model 2(β)	Model 3(β)	Model 4(β)
Age	0.023	0.036	0.068	0.064
Education level	−0.082	−0.051	−0.006	−0.003
Income	−0.134***	−0.093*	−0.073*	−0.068
History of infertility treatment	0.088*	0.057	0.056	0.053
Sleep disorders	0.245***	0.188***	0.167***	0.167***
Times of exercise weekly	−0.106*	−0.076*	−0.068	−0.069
Infertility-related stress		0.399***	0.288***	0.297***
Self-esteem			−0.280***	−0.294***
Interaction				−0.099**
F	11.574	27.275	31.547	29.203
Adjusted R2	0.106	0.256	0.314	0.322

Notes: *p < 0.05, **p < 0.01, ***p<0.001.