Table 4.

Composite Outcome at 60 Days in the FLU003 Inpatient Cohort According to Influenza Virus Type/Influenza A Virus Subtype

	A(H1N1)pdm09		A(H3N2)		B
	No.	%·	No.	%	No.	%	P Valuea
Enrollment From General Ward	n = 467		n = 441		n = 185
Composite outcomeb	54	11.6	39	8.8	18	9.7	.39
Death	15	3.2	11	2.5	7	3.8	.65
Extended hospitalizationc	23	4.5	17	3.6	5	2.5	.42
Transfer to ICUd	30	5.9	17	3.6	11	5.4	.24
Enrollment from ICU	n = 120		n = 58		n = 20
Composite outcomeb	58	48.3	25	43.1	9	45.0	.80
Death	27	22.1	14	23.7	8	38.1	.29
Extended hospitalizationc	37	29.·6	11	18.6	3	14.3	.14
Overall	n = 587		n = 499		n = 205
Composite outcomeb	112	19.1	64	12.8	27	13.2	.32
Death	42	7.1	25	5.0	15	7.3	.30
Extended hospitalizationc	60	9.5	28	5.3	8	3.6	.07

Abbreviation: ICU, intensive care unit.

^aTwo degrees of freedom chi-square test. Overall is stratified by ward at enrollment.

^bDeath, extended hospitalization, or progression to ICU or mechanical ventilation.

^cHospitalized for ≥28 days after enrollment.

^dIf enrolled from the general ward, progression to ICU or mechanical ventilation.