Table 4.

Univariable and Multivariable Analysis of Clinical Conditions and Myocardial Infarction Characteristics Associated with Secondary Prevention Medication Initiation after Resident Admission to Nursing Home after Acute Myocardial Infarction (N=11,192)

Characteristic	Univariable Association (POR, 95% CI)	Multivariable Association (POR, 95% CI)1
Atrial fibrillation
No	Reference	Reference
Yes	0.90 (0.83–0.97)	0.90 (0.82–0.98)
Angina pectoris
No	Reference	Reference
Yes	0.32 (0.29–0.36)	0.32 (0.28–0.36)
Unstable angina
No	Reference	Reference
Yes	0.78 (0.69–0.87)	0.63 (0.56–0.72)
Asthma
No	Reference	Reference
Yes	0.97 (0.73–1.30)	0.97 (0.71–1.32)
COPD
No	Reference	Reference
Yes	0.87 (0.81–0.94)	0.88 (0.80–0.96)
CHF
No	Reference	Reference
Yes	1.18 (1.11–1.27)	1.28 (1.18–1.38)
Elixhauser score
0–2	Reference	Reference
3–4	1.10 (1.02–1.19)	0.98 (0.89–1.08)
≥5	1.12 (1.01–1.25)	0.98 (0.85–1.13)
Length of stay, days
0–4	Reference	Reference
5–9	1.16 (1.07–1.26)	0.94 (0.85–1.04)
≥10	1.18 (1.07–1.30)	0.80 (0.71–0.91)
CCU or ICU use, days
0	Reference	Reference
1–3	1.57 (1.44–1.72)	1.33 (1.21–1.47)
≥4	1.66 (1.53–1.80)	1.33 (1.21–1.47)
Coronary revascularization2
No	Reference	Reference
Yes	2.31 (1.79–2.98)	1.62 (1.24–2.13)

Abbreviations: POR, proportional odds ratio; COPD, Chronic Obstructive Pulmonary Disease; CHF, Congestive Heart Failure; CCU/ICU, Coronary Care Unit/Intensive Care Unit.

¹Multivariable analyses also adjusted for a wide range of variables not shown here including demographics, clinical conditions, baseline medications, geriatric syndromes, AMI characteristics, and nursing home characteristics; see Supplementary Table S4 for complete list.

²Coronary revascularization and angioplasty procedures.