Table 4.

Multivariable logistic regression analysis of negative life events and coping styles on poor sleep quality

Variables	Model 1		Model 2		Model 3
	B	P	B	P	B	P
Model with only main effect
Negative life events	0.046	<0.001	0.045	<0.001	0.029	<0.001
Positive coping style	−0.036	<0.001	−0.041	<0.001	-0.021	0.003
Negative coping style	0.065	<0.001	0.062	<0.001	0.029	0.020
Model with interactions
Negative life events	0.054	<0.001	0.052	<0.001	0.035	<0.001
Positive coping style	−0.033	0.111	−0.039	0.062	-0.032	0.131
Negative coping style	0.110	0.001	0.100	0.003	0.090	0.009
Negative life events and Positive coping style	0.000	0.803	0.000	0.852	0.000	0.633
Negative life events and Negative coping style	−0.001	0.143	−0.001	0.222	-0.001	0.057

Note:

Model 1: Unadjusted

Model 2: Adjusted for gender and grade

Model 3: Adjusted for gender, grade, school type, family type, fathers’ education level, mothers’ education level, smoking, drinking alcohol, physical exercise, self-rated health, self-perceived study stress, and depressive symptoms

P was calculated by analysis of multivariable logistic regression