. Author manuscript; available in PMC: 2017 Mar 22.

Published in final edited form as: Circ Cardiovasc Qual Outcomes. 2009 May 5;2(3):221–227. doi: 10.1161/CIRCOUTCOMES.108.813790

Table 1.

Characteristics of hospitals with low, intermediate, and high compliance with AMI process measures during 2005

Characteristic	Low (N=105)	Intermediate (N=2,593)	High (N=63)
Urban location (%)^*	30.5 (N=32)	67.0 (N=1,710)	88.9 (N=56)
Safety net status (%)^**	19.2 (N=20)	11.0 (N=282)	6.4 (N=4)
Teaching status (%)^*	0 (N=0)	9.8 (N=252)	27.0 (N=17)
Nurse staffing ratio^† (mean, [SD])	2.5 [1.1]	2.9 [1.0]	3.2 [1.2]
Bed size^† (median, [IQR])	83 [57]	182 [205]	233 [198]
For profit ownership (%)^*	29.8 (N=31)	16.5 (N=425)	11.1 (N=7)
Medicare AMI volume^† (median, [IQR])	23 [17]	70 [106]	114 [172]

P-value for trend <.001, except

^**

P=.005

^†

P-value for overall and pair wise comparisons <.001. P-values for pairwise comparisons are adjusted for 3 comparisons within each variable using Bonferroni adjustments.