Table 4.

Association analysis between collection time for RT-qPCR testing and Covid-19 diagnosis (n = 477).

Collection time (days)	Negative (n = 91)a	Positive (n = 386)a	p	OR (IC 95 %)
	n ( %)	n ( %)
0–3	30 (33.0)	62 (16.1)	0.001	1b
4–10	36 (39.6)	212 (54.9)		2.85 (1.63 – 4.99)
≥ 11	25 (27.5)	112 (29.0)		2.17 (1.17–4.01)

^a241 patients had no information on symptom onset and/or swab collection date.

^bReference group.