Table 4.

Univariate and multivariate logistic regression analysis of factors affecting anxiety symptoms

Variables	Unadjusted OR			Adjusted ORa
	ORb	95 % CIc	P-value	ORb	95 % CIc	P-value
PSQId-score
< 6	1.00			1.00
≥ 6	3.82	2.51–5.81	<0.001	3.10	2.01–4.78	<0.001
Smoking habit
Non-smoker	1.00			1.00
Ex-smoker	1.66	1.05–2.62	0.030	1.48	0.90–2.43	0.124
Current smoker	1.62	1.09–2.39	0.016	1.47	0.96–2.25	0.077
Risky drinking
No	1.00			1.00
Yes	1.70	1.16–2.49	0.007	1.42	0.94–2.16	0.099
Total score of KOSS-SFe
Low risk	1.00
Moderate risk	3.03	1.92–4.80	<0.001	2.85	1.79–4.56	<0.001
High risk	5.89	3.99–8.68	<0.001	5.34	3.59–7.96	<0.001

^aAdjusted by PSQI-score, smoking habit, risky drinking, total score of KOSS-SF

^bOdds ratio

^cConfidence interval

^dPittsburgh Sleep Quality Index

^eKorean Occupational Stress Scale-Short Form