Table 4.

Factors associated with sleep quality using logistic regression among the study sample (n=338).

	ULogRa		MLogRb
Variables	Crude OR (95% CI)	P value	Adj. ORc (95% CI)	χ2 stat d (df)	P value
Gender Female Male	Reference 1.76 (1.10, 2.81)	0.019	Reference 1.72 (1.05, 2.83)f	4.61 (1)	0.032f
Clinical level Preclinical Clinical	Reference 1.20 (0.76, 1.88)	0.429	1.12 (0.68, 1.82)	- - -	0.662
Health and exercise
Healthy	Reference		Reference	-
Moderate	1.36 (0.24, 2.48)	0.318	1.12 (0.58, 2.22)	-	0.738
Unhealthy	1.94 (1.03, 3.66)	0.041	1.20 (0.58, 2.51)	-	0.630
Psychological
Healthy	Reference		Reference	8.99 (2)
Moderate	1.88 (0.97, 3.63)	0.062	1.60 (0.81, 3.15)f	1.86 (1)e	0.172f
Unhealthy	3.31 (1.73, 6.34)	<0.001	2.64 (1.34, 5.21)f	7.87 (1)e	0.005f
Substance use
Healthy	Reference		Reference	-
Moderate	1.12 (0.65, 1.93)	0.691	0.93 (0.51, 1.67)	-	0.802
Unhealthy	2.40 (1.23, 4.69)	0.010	1.68 (0.79, 3.60)	-	0.177
Nutrition lifestyle
Healthy	Reference		Reference	8.24 (2)
Moderate	1.37 (0.82, 2.30)	0.232	1.15 (0.67, 1.98)f	0.25 (1)e	0.614f
Unhealthy	2.69 (1.43, 5.07)	0.002	2.48 (1.28, 4.82)f	7.24 (1)e	0.007f
Social concern
Healthy	Reference		Reference	-
Moderate	0.67 (0.35, 1.28)	0.222	0.58 (0.28, 1.21)	-	0.147
Unhealthy	1.23 (0.67, 2.27)	0.498	0.78 (0.37, 1.64)	-	0.506
Sense of purpose
Healthy	Reference		Reference	-
Moderate	1.23 (0.68, 2.20)	0.491	1.00 (0.51, 1.98)	-	0.989
Unhealthy	1.94 (1.10, 3.42)	0.021	1.06 (0.52, 2.17)	-	0.871

Notes: ^aUnivariable logistic regression;

^bMultiple logistic regression (the model fits reasonably well; model assumptions are met; no significant interaction terms, no multicollinearity problems, no influential outliers);

^cAdjusted odds ratio;

^dLikelihood ratio (LR) test;

^eWald test;

^fValues from the main effect model.