. Author manuscript; available in PMC: 2009 Oct 12.

Published in final edited form as: Pediatr Crit Care Med. 2008 Nov;9(6):553–559. doi: 10.1097/PCC.0b013e31818d32f1

Table 4.

Comparison of frequencies of interleukin-1 receptor antagonist alleles in children with community-acquired pneumonia treated with or without positive pressure ventilation

	Patients with or without PPV
Copies of the A1 Allele	No PPV, n (%)	PPV^a, n (%)
2, n = 549	499 (75.1)	50 (63.0)
1, n = 171	148 (22.3)	23 (28.4)
0, n = 24	17 (2.6)	7 (8.6)^b

Of the three patients who could not be genotyped (see Table 3), two were treated with positive pressure ventilation

p = 0.003 by chi-square analysis.

PPV, Positive Pressure Ventilation.