Table 4.

Mean and Median Time (in Days) from Symptom Onset to Diagnosis among All Cases and Severe Cases, and Time from Symptom Onset to Death among Fatal Cases, by Age Group, Gender and Region for the 2008–2009 HFMD Epidemics in China. Intervals < 0 Days (n=27) are Excluded, and Intervals > 30 Days (n=1546) are Truncated at 30 Days. 95% Confidence Intervals are Not Given Where the Number of Observations is < 10.

Grouping Factor		Number of Days from
		Onset to Diagnosis
		Cases		Severe Cases		Onset to Death
		Mean (Median)	95% CI	Mean (Median)	95% CI	Mean (Median)	95% CI
Age Group	0–0.9	2.31 (2)	2.30, 2.32	2.69 (2)	2.61, 2.78	4.62 (4)	3.94, 5.41
	1–2.9	1.59 (1)	1.59, 1.59	2.18 (2)	2.13, 2.22	3.69 (3)	3.29, 4.14
	3–5.9	1.31 (1)	1.30, 1.31	1.97 (1)	1.89, 2.06	3.36 (3)	2.71, 4.18
	6–9.9	1.46 (1)	1.44, 1.47	2.29 (2)	2.07, 2.53	5.0 (5)	-
	≥10	1.89 (1)	1.87, 1.92	2.30 (2)	1.68, 3.16	-	-
Gender	Fenale	1.59 (1)	1.58, 1.59	2.23 (2)	2.17, 2.30	4.06 (3)	3.46, 4.77
	Male	1.57 (1)	1.57, 1.57	2.25 (2)	2.21, 2.29	3.88 (3)	3.51, 4.29
Region1	CN	1.47 (1)	1.46, 1.47	2.11 (2)	2.07, 2.14	3.85 (3)	3.40, 4.37
	CS	1.63 (1)	1.63, 1.64	2.51 (2)	2.36, 2.66	4.63 (3)	3.69, 5.82
	S	1.76 (1)	1.75, 1.77	3.05 (2)	2.82, 3.30	3.44 (3)	2.90, 4.08
	NE	1.32 (1)	1.31, 1.33	2.88 (3)	2.67, 3.11	3.73 (3)	3.14, 4.41
	SW	1.89 (1)	1.87, 1.90	2.40 (2)	2.21, 2.59	4.37 (3)	3.35, 5.70
	CW	1.47 (1)	1.46, 1.48	2.74 (2)	2.33, 3.22	3.22 (3)	2.45, 4.24
	W	1.46 (1)	1.43, 1.49	1.20 (0)	0.59, 2.46	1.00 (1)	-
Overall		1.58 (1)	1.57, 1.58	2.24 (0)	2.21, 2.28	3.95 (1)	3.62, 4.31

¹CN= Central North, CS=Central South, S=South, NE=Northeast, SW=Southwest, CW= Central West, W=West,