Table 1. General information of subjects (n = 2,935).

Variables		No. (%)
Age, yr
	20–29	826 (28.14)
	30–39	838 (28.55)
	40–49	561 (19.11)
	50–59	541 (18.43)
	60–69	145 (4.94)
	≥ 70	2 (0.07)
	No response	22 (0.75)
Sex
	Female	2,267 (77.24)
	Male	646 (22.01)
	No response	22 (0.75)
Profession
	Medical doctor	194 (6.61)
	Nurse	1,285 (43.78)
	Medical technician	456 (15.54)
	Clerical position	920 (31.35)
	No response	80 (2.73)
COVID-19 diagnosis and quarantine experience
	PCR (+)/quarantine	10 (0.34)
	PCR (−)/quarantine	559 (19.01)
	PCR not tested/quarantine	34 (1.16)
	PCR not tested/no quarantine	2,253 (76.80)
	No response	79 (2.69)
Scope of work
	Contact with COVID-19 patients	736 (25.08)
	Sample handling of COVID-19 patients	200 (6.81)
	Contact with non-COVID-19 patients	1,104 (37.61)
	Sample handling of non-COVID-19 patients	157 (5.35)
	No contact of patients and samples	712 (24.26)
	No response	26 (0.89)

COVID-19 = coronavirus disease 2019, PCR = polymerase chain reaction.