Table 2.

Program Evaluation Outcomes.^a

	Prenomogram (N = 317)	Postnomogram (N = 95)	Hazard Ratio/Odds Ratio	P Value
Primary end point
Time to therapeutic (hours)	18.7 ± 18.6	11.7 ± 11.9	1.59	<.0005
Secondary end points
Percentage therapeutic at 24 hours	236 (74.4)	84 (88.5)	2.97	.002
Percentage of patients with PTT ≥120 secondsb	156 (49.3)	45 (46.8)	0.92	.73

^aData presented as mean ± SD or as number (%).

^bExcluding improperly drawn PTT after initial heparin bolus.