Table 2. Cut-offs and Log-rank test results of diagnosis time-efficiency.

Durations	N	Cut point	Statistic	Log-rank
				Chisq	P value
From symptom onset to diagnosis confirmation	866	5	4.14	21.3	<0.0001
From symptom onset to first medical visit	1,113	4	3.72	11.9	0.00016
From first medical visit to diagnosis confirmation	844	3	2.99	12.4	0.00043