Table 2.

Risk of Parkinson Disease and Secondary Parkinsonism in Patients With MI and Members of the General Population Comparison Cohort

Disease	Comparison cohort		Patients with MI
	Events/No. at risk	Cumulative incidence,% (95% CI)	Events/No. at risk	Cumulative incidence,% (95% CI)	Hazard ratio controlled for matching factors (95% CI)*	Adjusted hazard ratio (95% CI) †
Parkinson disease	4352/630 166	1.25 (1.20–1.29)	668/131 396	0.86 (0.79–0.94)	0.82 (0.75–0.89)	0.80 (0.73–0.87)
Secondary parkinsonism	474/630 166	0.14 (0.12–0.16)	71/131 396	0.09 (0.07–0.12)	0.77 (0.59–1.00)	0.72 (0.54–0.94)

MI indicates myocardial infarction.

^*Age, sex, and calendar year.

^† Controlled for matching factors by study design and adjusted for heart failure, stable angina pectoris, atrial fibrillation/atrial flutter, valvular heart disease, hypercholesterolemia, hypertension, stroke, intermittent claudication, obesity, diabetes, chronic pulmonary disease, alcoholism‐related disease, head trauma, osteoarthritis, anemia, chronic kidney disease, depression, a modified Charlson Comorbidity Index score, antipsychotics, calcium channel blockers, income, and employment.