. Author manuscript; available in PMC: 2011 Feb 1.

Published in final edited form as: JAMA. 2010 Feb 24;303(8):739–746. doi: 10.1001/jama.2010.158

Table 5.

Hospital Mortality and Length of Stay

Variable	Lactate Clearance Group (n = 150)	ScvO₂ Group (n = 150)	Proportion Difference (95% Confidence Interval)	P Value^b
In-hospital mortality, No. (%)^a Intent to treat	25 (17)	34 (23)	6 (−3 to 15)
Per protocol	25 (17)	33 (22)	5 (−3 to 14)
Length of stay, mean (SD), d ICU	5.9 (8.46)	5.6 (7.39)		.75
Hospital	11.4 (10.89)	12.1 (11.68)		.60
Hospital complications Ventilator-free days, mean (SD)	9.3 (10.31)	9.9 (11.09)		.67
Multiple organ failure, No. (%)	37 (25)	33 (22)		.68
Care withdrawn, No. (%)	14 (9)	23 (15)		.15

Abbreviations: ICU, intensive care unit; ScvO₂, central venous oxygen saturation.

Primary study end point.

Continuous data are compared using an unpaired t test; categorical variables, using the χ² test.