Table 3.

Crude and multivariable-adjusted 30-day and 1-year mortality according to combination of previously diagnosed cardiovascular comorbidities

Comorbidity combination	n	30-day mortality		1-year mortality
		Dead (n, %)	Hazard ratio (95% CI)	Dead (n, %)	Hazard ratio (95% CI)
No comorbidity	202	19 (9.0)	1.00	330 (15.0)	1.00
Hypertension/diabetes	1173	136 (11.6)	1.09 (0.85–1.39)	270 (23.0)	1.27 (1.06–1.50)
Hypertension/heart failure	467	123 (26.5)	1.82 (1.41–2.34)	239 (51.4)	1.90 (1.58–2.29)
Hypertension/atrial fibrillation	233	35 (15.2)	1.16 (0.79–1.71)	73 (31.6)	1.21 (0.92–1.59)
Hypertension/stroke	224	47 (21.0)	1.73 (1.21–2.47)	84 (37.5)	1.76 (1.36–2.28)
Hypertension, diabetes, and heart failure	507	92 (18.2)	1.40 (1.06–1.85)	214 (42.3)	1.79 (1.48–2.16)
Hypertension, diabetes, and stroke	202	45 (22.2)	1.85 (1.30–2.62)	90 (44.6)	2.17 (1.69–2.79)
Other combinations	4573	732 (16.1)	1.31 (1.10–1.57)	1371 (30.1)	1.43 (1.35–1.63)

Notes: Cox proportional hazard regression model adjusted for age, sex, race, marital status, study year, type of acute myocardial infarction (Q wave versus non-Q wave) and acute hospital complications (atrial fibrillation, heart failure, cardiogenic shock). Comparisons are between patients with selected comorbidity clusters and patients without any comorbidity.