Table 5. Predictors of sleep quality among the studied students.

SAS-SV: Smartphone Addiction Scale Short Version

Variable	B	Std. error	95% confidence interval for B		P-value
			Lower	Upper
Age	-0.032	0.033	-0.096	0.032	0.331
Gender	0.214	0.334	-0.442	0.871	0.521
Educational level	0.121	0.230	-0.333	0.574	0.601
School type	0.085	0.386	-0.675	0.845	0.826
Educational path	0.162	0.144	-0.122	0.446	0.263
Marital status	-1.688	1.467	-4.575	1.199	0.251
Living place	0.089	0.384	-0.667	0.846	0.816
Monthly family income	-0.353	0.190	-0.726	0.021	0.064
Chronic disease	0.078	0.411	-0.730	0.886	0.850
Psychiatric disease	1.378	0.363	0.664	2.092	< 0.001
Having caffeine less than six hours before bedtime	1.055	0.309	0.448	1.663	0.001
Regular sports activity	0.021	0.341	-0.649	0.691	0.951
SAS-SV score	0.053	0.016	0.022	0.085	0.001
Average no. of hours per day spent on mobile phones	0.040	0.040	-0.037	0.118	0.308