Table 5.

Hierarchical Linear Regression Analyses of the Factors Associated with Anxiety

Variables	Anxiety
	Model 1(β)	Model 2(β)	Model 3(β)	Model 4(β)
Age	−0.084*	−0.064	−0.034	−0.039
History of infertility treatment	0.102*	0.069	0.069	0.066
Sleep disorders	0.312***	0.251***	0.234***	0.233***
Infertility-related stress		0.401***	0.306***	0.315***
Self-esteem			−0.225***	−0.240***
Interaction				−0.133**
F	24.411	50.783	49.011	43.105
Adjusted R2	0.116	0.271	0.310	0.321

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