Table 6.

Multiple regression models for participants’ PSQI scores.

	Model 1a			Model 2b
	Coefficientc	t value	p value	Coefficientc	t value	p value
Gender				0.29 (−1.11–1.7)	0.41	0.68
Age, years	1.08 (0.3–1.86)	2.72	0.007	1.03 (0.13–1.94)	2.25	0.026
Marital status				−1.19 (−3.62–1.24)	−0.96	0.34
Education level				0.05 (−1.33–1.43)	0.07	0.94
History of chronic disease				0.7 (−0.74–2.13)	0.96	0.34
Hospitalization duration, days				−0.35 (−1.17–0.46)	−0.85	0.4
Clinical type				0.1 (−1.28–1.47)	0.14	0.89
Family member diagnosed with COVID-19				0.16 (−1.17–1.48)	0.23	0.82
Frequency of contacting with family				−0.85 (−2.89–1.2)	−0.82	0.42
Subjective knowledge level of COVID-19				−0.52 (−1.72–0.67)	−0.86	0.39
Subjective evaluation of disease symptoms	0.98 (0.25–1.7)	2.66	0.009	0.98 (0.23–1.73)	2.56	0.011
Evaluation of medical staffs' attitude				0.06 (−2.87–3)	0.04	0.97
Constant	5.23 (3.27–7.18)	5.27	<0.001	9.49 (0.69–18.29)	2.13	0.035

^aModel 1 is a stepwise linear regression model. Significance level for entering the model was 0.05. F = 9.67, adjusted R² = 0.0794.

^bModel 2 is a linear regression model including all factors investigated in the study. F = 1.88, adjusted R² = 0.0501.

^cData are regression coefficient (95% confidence interval).