Table 3.

Logistic regression analysis with TST misperception as a dependent variable

Variables	Univariable		Multivariable
	OR (95% CI)	p	OR (95% CI)	p
Age	1.02 (0.99–1.06)	0.225	1.07 (1.01–1.13)	0.027*
Female	1.17 (0.5–2.72)	0.716
Education	0.76 (0.59–0.95)	0.023*	0.69 (0.48–0.91)	0.017*
ISI	1.06 (0.95–1.19)	0.287
PSQI	1.55 (1.13–2.21)	0.009**	1.43 (0.92–2.39)	0.141
KESS	1.14 (1.02–1.28)	0.02*	1.13 (0.97–1.34)	0.128
CES-D	1 (0.95–1.05)	0.97
BAI	1.06 (1–1.14)	0.084
GARS	1.01 (0.98–1.05)	0.512
SAPS	1.11 (1.03–1.20)	0.01*	1.14 (1.04–1.27)	0.008**

Multivariable logistic regression model using stepwise backward selection.

^*p<0.05;

^**p<0.01.

OR, odds ratio; CI, confidence interval; TST, total sleep time; ISI, insomnia severity index; PSQI, pittsburgh sleep quality index; ESS, Epworth Sleepiness Scale; CES-D, Center for Epidemiologic Studies Depression Scale; BAI, beck anxiety inventory; GARS, Global Assessment of Recent Stress Scale; SAPS, Smartphone Addiction Proneness Scale