Comparing swab- and different symptoms-based strategies to ascertain COVID-19 recovery in healthcare workers: a cost-effectiveness analysis

Table 2 Kaplan Meier estimation of recovery time and recovery Hazard Ratios (HR) estimated in the multivariate Cox Proportional hazard model

	Kaplan–Meier estimates			Cox regression
	N Events	Median (days)	0.95 CI	HR	0.95 CI	p-value
Overall	913	21	20–21
Sex
Male	257	21	20–21	0.99	0.85–1.14	0.862
Female	656	21	20–21	Reference
Age (years)				1.00	0.99–1.00	0.514
22–29	116	18	17–21
30–39	221	20	18–21
40–49	203	21	19–21
50–59	294	21	19–21
60–67	79	21	20–21
Recovery assessment strategy
Swab-based	210	25	23–28	0.18	0.14–0.22	< 0.001
Symptoms-based	26	21	16–24	Reference
Symptoms
Yes	508	21	21–21	0.65	0.56–0.74	< 0.001
No	405	17	17–18	Reference
Hospitalization
Yes	18	36	31–49	0.15	0.09–0.26	0.017
No	895	21	20–21	Reference

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