Discharge Hemoglobin Association with Long-Term Outcomes of ST-Elevation Myocardial Infarction Patients Undergoing Primary Percutaneous Coronary Intervention

Table 2

Association of discharge hemoglobin with 2-year all-cause mortality.

Hb concentration (g/dL)	Crude univariate model			Adjusted for age			Adjusted for all covariables
	HR	95% CI	value	OR	95% CI	value	OR	95% CI	value
Quintile 1: 5.4–11.3	3.529	1.976–6.302	<0.001	2.968	1.614–5.456	<0.001	2.485	1.310–4.715	0.005
Quintile 2: 11.3–12.5	1.418	0.731–2.750	0.302	1.347	0.687–2.641	0.385	1.220	0.604–2.465	0.580
Quintile 3: 12.5–13.5^a	1 (ref)		<0.001	1 (ref)		<0.001	1 (ref)		<0.001
Quintile 4: 13.5–14.6	0.716	0.329–1.560	0.401	0.808	0.370–1.765	0.593	0.976	0.442–2.154	0.952
Quintile 5: 14.6–18.8	0.659	0.296–1.466	0.306	0.964	0.425–2.184	0.930	1.200	0.522–2.757	0.667

Hb, hemoglobin; HR, hazard ratio; OR, odds ratio; CI, confidence interval. ^aPercentiles are shown in categories: quintile 1: <20^th percentile; quintile 2: 20^th–<40^th percentile; quintile 3: 40^th–<60^th percentile; quintile 4: 60^th–<80^th percentile; quintile 5: ≥80^th percentile.