Do inter-hospital comparisons of in-hospital, acute myocardial infarction case-fatality rates serve the purpose of fostering quality improvement? An evaluative study

Table 4 Determinants and evolution of AMI-CFR. Mutually adjusted odds ratios and 95% confidence intervals ().

	Initial 1	Initial 2	Shock 1	Shock 2
Age (5-year groups)	1.37 (1.35; 1.40)	1.36 (1.34; 1.39)	1.36 (1.34; 1.39)	1.35 (1.32; 1.38)
Males	0.90 (0.84; 0.96)	0.92 (0.86; 0.99)	0.91 (0.84; 0.98)	0.93 (0.86; 1.01)
CCI	1.09 (1.08; 1.10)	1.07 (1.06; 1.09)	1.06 (1.05; 1.08)	1.05 (1.04; 1.06)
Trend (semester)	0.98 (0.96; 0.99)	0.98 (0.97; 1.00)	0.98 (0.96; 0.99)	0.99 (0.97; 1.00)
Shock	. . .	. . .	23.0 (20.9; 25.2)	21.0 (19.0; 23.2)
Community vs tertiary	1.21 (1.12; 1.30)	1.47 (1.37; 1.59)	1.39 (1.28; 1.50)	1.61 (1.48; 1.75)
Intermediary vs tertiary	1.08 (0.99; 1.19)	1.38 (1.25; 1.52)	1.23 (1.11; 1.36)	1.48 (1.33; 1.65)

AMI-CFR: Acute myocardial infarction case-fatality rate
Initial 1: odds ratios adjusted for age, gender, CCI, and trend (transfers-out excluded)
Initial 2: odds ratios adjusted for age, gender, CCI, and trend (all transfers excluded)
Shock 1: odds ratios adjusted for age, gender, CCI, trend, and shock (transfers-out excluded)
Shock 2: odds ratios adjusted for age, gender, CCI, trend, and shock (all transfers excluded)

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