Table 2.

Summary of study results.

Variable	Dexmedetomidine (n = 33)	Propofol (n = 319)	P value
Mean +/- SD
Hospital length of stay (days)	9.79 +/- 6.77	12.42 +/- 7.44	.052
ICU length of stay (days)	2.55 +/- 2.95	3.99 +/- 4.78	.091
Duration of mechanical ventilation (hours)	7.37 +/- 4.30	12.88 +/- 15.42	.042
No. patients (%)
Hospital mortality (expired)	0 (0)	2 (0.6)	1.000
Incidence delirium (CAM-ICU+)	3 (12.0)	24 (9.0)	.747
Mean +/- SD
Dexmedetomidine dosing (mcg/kg/hr)
Average dose	0.489 +/- 0.13
Maximum dose	0.602 +/- 0.15
Propofol dosing (mcg/kg/min)
dose, mean		29.50 +/- 10.63
dose, maximum		36.38 +/- 13.49
No. patients (%)
Requirement of second sedative agent	8 (24.2)	86 (27.0)	.737
Dexmedetomidine	n/a	82 (95.3)	n/a
Propofol	8 (100)	n/a	n/a
Lorazepam	0 (0)	4 (4.7)	n/a
Mean +/- SD
Time second agent started (hours)	7.90 +/- 12.99	9.13 +/- 10.92	.603