Table 2.

Severity on admission, duration of hospitalization, and outcome of the three age groups

Age	Severity on admission					Duration of hospitalization (days)	Outcome
	Mild	M I	M II	Severe	Total (%)		Improve	Unchange	Worsen	Died
< 40	33	14	2	0	49 (9%)	8 ([6−10], 1−25)	45	4	0	0
40−69	17	86	42	1	146 (25%)**	10 ([8−13], 1−28)#	128	0	18	0§
70 ≤	71	224	88	3	386 (66%)**	12 ([9−18], 1−49)##, ‡	323	0	33	30§
Total (%)	121 (21%)	324 (56%)	132 (22%)	4 (1%)	581	11 ([8−15], 1−49)	496 (85%)	4 (1%)	51 (9%)	30 (5%)

The number of patients is expressed as the absolute value (percentage). The duration of hospitalization is expressed as median days ([25−75% interquartile range], range)

**P < 0.001 compared with the severity of patients < 40 years and of 40−69 years

^#P < 0.01 and ^##P < 0.001 compared with the duration of hospitalization of patients < 40 years

^‡P < 0.001 compared with the duration of hospitalization of patients of 40−69 years

^§P < 0.001 compared with the outcome of patients < 40 years and of 40−69 years

M I moderate I, M II moderate II