. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: J Crit Care. 2011 Aug 19;27(3):323.e1–323.e9. doi: 10.1016/j.jcrc.2011.06.015

Table 2.

Unadjusted and multivariable-adjusted predictors of not receiving lung protective ventilation

Variable	Unadjusted Odds Ratio (95% Confidence Interval), p	Adjusted Odds Ratio (95% Confidence Interval), p
Age, per std (16 years)	1.14 (1.02-1.28), 0.024	1.18 (1.02-1.38), 0.028
Sex, female	2.03 (1.61-2.58), 0.0001	NS
Race, white vs. non-white	1.26 (0.99-1.60), 0.059	1.40 (1.05-1.88), 0.023
Body Mass Index per std (7.3 kg/m²)	1.12 (0.99-1.26), 0.076	NS
Height, per std (10cm)	0.56 (0.50-0.64), 0.0001	0.55 (0.48-0.63), 0.0001
Weight, per std (22 kg)	0.86 (0.77-0.97), 0.01	NS
SAPS II, per std (14)	0.86 (0.77-0.97), 0.01	0.78 (0.67-0.92), 0.003
Direct lung injury	0.76 (0.59-0.98), 0.035	NS
Dialysis	3.80 (0.87-16.5), 0.075	NS
Acquired Immunodeficiency Syndrome	0.64 (0.42-0.97), 0.036	NS
Radiographic lung injury score per std (0.57)	0.84 (0.74-0.95), 0.005	0.83 (0.70-0.95), 0.009
Non-volume control ventilator mode	3.18 (2.03-3.97), 0.0001	3.07 (1.78, 5.27), 0.0001
Serum bicarbonate per std (5.5 mmol/L)	0.92 (0.82-1.03), 0.14	0.83 (0.71-0.97), 0.017
Duration of ICU stay prior to study enrollment per std (2 days)	0.90 (0.80-1.01), 0.078	0.84 (0.73-0.98), 0.02

Hosmer-Lemeshow Goodness of fit for adjusted model p=0.33, c-statistic 0.712

Abbreviations: std: standard deviation, kg: kilogram, m: meter, cm: centimeter, SAPS: Simplified Acute Physiology Score, mmol: millimoles, L: liter, NS: not-significant and not included in final adjusted model.