Surfactant protein A genetic variants associate with severe respiratory insufficiency in pandemic influenza A virus infection

Table 1 Demographic and clinical characteristics of H1N1pdm-infected patients

Characteristics	Subjects
Age (years)	43.5 ± 18.0^a
Gender (male)	52	(55.9)
Hospital admission
No	23	(24.7)
Yes	70	(75.3)
PVP
No	40	(43.0)
Yes	53	(57.0)
ICU admission
No	63	(67.7)
Yes	30	(32.3)
ARF
No	45	(48.4)
Yes	48	(51.6)
Shock
No	77	(82.8)
Yes	16	(17.2)
ARDS
No	77	(82.8)
Yes	16	(17.2)
MODS
No	87	(93.5)
Yes	6	(0.65)
MV
No	69	(74.2)
Yes	24	(25.8)
Hospital mortality
No	89	(95.7)
Yes	4	(0.43)
Risk factor
No	32	(34.4)
Yes	61	(65.6)
Secondary bacterial infection^b
No	80	(86.0)
Yes	13	(14.0)

ARDS, acute respiratory distress syndrome; ARF, acute respiratory failure; ICU, intensive care unit; MODS, multiorgan dysfunction syndrome; MV, mechanical ventilation; PVP, Primary viral pneumonia.
^aData are presented as mean ± SD or number of individuals (%). ^bTen patients had secondary bacterial pneumonia, and seven patients had bacteremia (four of them with secondary bacterial pneumonia).

ISSN: 1364-8535