Table 2.

Results

	Preintervention (2011 Group)	Postintervention (2013 Group)	95% CI	P Value
Duration of mechanical ventilation (h), mean ± SD	138.3 ± 132.6	92.9 ± 73.3	−10.96 to −80.04	0.01
ICU length of stay (h), mean ± SD	211.5 ± 164.3	160.7 ± 125.7	−98.62 to −3.02	0.038
28-d ventilator-free days, mean ± SD	23.6 ± 4.9	24.1 ± 3.1	−0.8 to 1.8	0.47
28-d ventilator-free days (mortalities censored), mean ± SD	23.41 ± 5.51	24.57 ± 2.92	−0.51 to 2.84	0.17
RASS score, median (IQR)	−2.57 (−3.23 to −1.40)	−1.25 (−2.3 to −0.40)		0.001
% of RASS scores −3 to −5 in first 24 h, mean ± SD	46.8% ± 46.9%	27.3% ± 37.3%	−33.3 to −5.6	0.006
CPOT score, median (IQR)	2 (1.1–2.75)	1.5 (0.79–2.39)		0.03
Self-extubation, n (%)	2 (3.0)	5 (5.9)		0.46
Reintubation within 24 h of self-extubation, n (%)	1 (50)	2 (40)		1.00
Tracheostomy, n (%)	11 (16.9)	8 (10.1)		0.32
Hospital mortality, n (%)	22 (33.8)	24 (30)		0.72

Abbreviations: CI, confidence interval; COPD, chronic obstructive pulmonary disease; CPOT, Critical-Care Pain Observation Tool; ICU, intensive care unit; IQR, interquartile range; RASS, Richmond Agitation-Sedation Scale; SAPS, Simplified Acute Physiology score.