. 2009 May 5;24(7):833–840. doi: 10.1007/s11606-009-0997-6

Table 2.

Mean Performance Scores (Overall and Condition-specific) between Top and Bottom Performing Hospitals Participating in the Study

	O-CQS mean score (SD)*	AMI CQS mean score (SD)*	HF CQS mean score (SD)*	PN CQS mean score (SD)*	CABG CQS mean score (SD)^†║	THR/TKR CQS mean score (SD)^‡
Top performing (n = 45)	0.94 (0.01)	0.97 (0.02)	0.92 (0.05)	0.89 (0.04)	0.62 (0.47)	0.88 (0.28)
Bottom performing (n = 39)	0.79 (0.04)	0.83 (0.20)	0.65 (0.11)	0.77 (0.05)	0.33 (0.42)	0.71 (0.34)

t-test between top and bottom performing, *p < 0.0001, ^†p < 0.01, ^‡p < 0.05

^║Only of respondents of hospitals that performed CABG, top performers (n = 31), bottom performers (n = 16).

Overall Composite Quality Score (O-CQS), Composite Quality Score (CQS), acute myocardial infarction (AMI), heart failure (HF), and pneumonia (PN), coronary artery bypass graft (CABG), and total hip replacement/knee replacement (THR/TKR)