. Author manuscript; available in PMC: 2014 Sep 15.

Published in final edited form as: Cochrane Database Syst Rev. 2007 Oct 17;(4):CD003794. doi: 10.1002/14651858.CD003794.pub3

Table 3. Rates and NNT of pneumonia.

Study ID	Study duration	Placebo rate (%)	NNT(h)
Hanania 2003	24 weeks	0	NA
Mahler 2002	24 weeks	0	NA
Barnes 2006	13 weeks	0	NA
SCO100540	24 weeks	0	NA
O’Donnell 2006	8 weeks	1.56	83
TORCH	156 weeks	12.3	13
TRISTAN	52 weeks	0.83	153
Calverley 2003	52 weeks	3.6	36