Table 7.

Univariate logistic analysis of physical (PHQ-15 ≥ 10) and chronic fatigue (FSS ≥ 3.22) symptoms after the COVID-19 outbreak according to patient care work.

Variable	Univariate logistic analysis
	Physical symptoms		Chronic fatigue symptoms
	OR (95% CI)	P-value	OR (95% CI)	P-value
Work location
Medical institutions (COVID-19 ward, emergency room, COVID-19 intensive care unit)	2.46 (1.93, 3.14)	P < 0.001	2.22 (1.73, 2.85)	P < 0.001
Non-medical institutions (residential treatment center, ambulance, others)	0.46 (0.34, 0.62)	P < 0.001	0.67 (0.51, 0.89)	0.005
Work experience with difficult COVID-19 patient
Critically ill	1.81 (1.43, 2.30)	P < 0.001	1.62 (1.23, 2.13)	P < 0.001
Dementia, delirium, other mental illness	2.16 (1.72, 2.73)	P < 0.001	1.91 (1.47, 2.49)	P < 0.001
Number of COVID-19 patients cared for*	1.24 (1.13, 1.36)	P < 0.001	1.21 (1.09, 1.34)	P < 0.001
Days of care for COVID-19 patients**	1.26 (1.17, 1.35)	P < 0.001	1.22 (1.13, 1.32)	P < 0.001
Currently working in direct contact with COVID-19 patient	1.81 (1.44, 2.28)	P < 0.001	1.61 (1.24, 2.09)	P < 0.001
Average contact time with COVID-19 patients per day***	1.37 (1.25, 1.51)	P < 0.001	1.29 (1.17, 1.43)	P < 0.001
Experience with wearing Level D PPE	1.63 (1.29, 2.04)	P < 0.001	1.56 (1.21, 2.01)	P < 0.001
Experience with wearing PAPR	1.77 (1.41, 2.22)	P < 0.001	1.90 (1.47, 2.46)	P < 0.001

CI confidence interval, PPE personal protection equipment, PAPR powered air-purifying respirator.

*0, 1–10 patients, 11–20 patients, more than 20 patients, as the number of patients to care increases from a small group to a large group.

**0, 1–29 days, 30–59 days, 60–89 days, more than 90 days, as the number of days of care for COVID-19 patients increases from a small group to a large group.

***No, less than 30 min, 30 min–2 h, 2–6 h, more than 6 h, as the contact time with COVID-19 patients per day increases from a small group to a large group.