Table 1.

Demographic characteristics of study population

		Participants (N=600)
Sex
	Female	313 (52%)
	Male	287 (48%)
Age, years		40 (29–54)
Known exposure to COVID-19 case 2 weeks before symptom onset		174 (29%)
Disease severity at study entry*
	Not ill	0
	Mildly ill	533 (89%)
	Moderately ill	67 (11%)
	Gravely ill	0
Smoking status
	Current	32 (5%)
	Former	178 (30%)
	Never routine	390 (65%)
Chest radiography results
	No abnormalities	63 (11%)
	Abnormalities present	302 (50%)
	Data not available	235 (39%)
Comorbidities
	Cardiovascular disease	37 (6%)
	Asthma	26 (4%)
	Other chronic respiratory condition	5 (1%)
	Diabetes	23 (4%)
	Known HIV infection	6 (1%)
	Chronic kidney disease	2 (<1%)
	Current cancer	2 (<1%)
Symptom positivity
	Breathing difficulties	230 (38%)
	Cough	565 (94%)
	Cough for less than 2 weeks	407 (68%)
	Cough for 2 weeks or longer	158 (26%)
	Fatigue	448 (75%)
	Fever	343 (57%)
	General malaise	509 (85%)
	Headache	518 (86%)
	Loss of smell	106 (18%)
	Loss of taste	100 (17%)
	Muscle pain	481 (80%)
	Sore throat	523 (87%)
	Thoracic pain	427 (71%)

Data are n (%) and median (IQR).

^*Disease severity definitions are as follows: not ill refers to healthy and strong impression throughout examination; mildly ill refers to ability to carry out routine activities but symptomatic (eg, fatigue or cough) upon careful inspection; moderately ill refers to some impairment of activities (ie, visibly ill to a lay person, still ambulatory and mostly self-sufficient, but clearly symptomatic); and gravely ill refers to inability to carry out usual activities, visibly distressed, and requires hospitalisation.