Table 3.

Linear Regression Analysis on Ventilator Hours

	Regression Coefficient	95% CI	P Value
Use of analgosedation protocol (year 2011 vs 2013)	−26.62	−44.98 to −8.26	0.005
Prior lung disease
°COPD	−0.23	−58.74 to 58.27	0.994
°Asthma	60.71	−30.72 to 152.14	0.191
°Other underlying lung disease	31.54	−12.31 to 75.40	0.157
Type of admission
°Medical	44.17	0.20 to 88.14	0.049
°Emergency surgery	105.06	11.54 to 198.59	0.028
Reason for intubation
°Congestive heart failure	13.10	−59.11 to 85.32	0.720
°Pneumonia	37.36	−10.20 to 84.92	0.123
°Aspiration event	−19.49	−81.99 to 46.01	0.538
°Acute exacerbation of COPD	−7.15	−67.87 to 53.57	0.816
Baseline characteristics
°Age	−0.822	−2.33 to 0.69	0.284
°SAPS II score	0.54	−0.55 to 1.62	0.328

Abbreviations: CI, confidence interval; COPD, chronic obstructive pulmonary disease; SAPS, Simplified Acute Physiology score.