Table 1.

Baseline Characteristics of Patients Receiving a Study Medication (N = 3094).^a,b

	N	%
Characteristic
Age, years
Mean (SD)	76.5 (7.3)
Median (IQR)	76 (70-82)
≤65 years	121	3.9
66-69 years	536	17.3
70-74 years	646	20.9
75-79 years	697	22.5
80-84 years	622	20.1
85-89 years	335	10.8
90+ years	137	4.4
Sex
Women	1373	44.4
Men	1721	55.6
Locationc
Urban	2885	93.2
Rural	209	6.8
Long-term care residence	277	9.0
Neighborhood income quintiled
1 (lowest)	779	25.2
2	690	22.4
3	592	19.2
4	536	17.4
5 (highest)	489	15.8
Comorbidities
Coronary artery disease (including angina)	1911	61.8
Diabetes mellitus	1628	52.6
Heart failure	1592	51.5
Chronic lung disease	1298	42.0
Arrhythmia (bradyarrhythmia and tachyarrhythmia)	907	29.3
Atrial fibrillation/flutter	667	21.6
Myocardial infarction	519	16.8
Peripheral vascular disease	474	15.3
Chronic liver disease	344	11.1
Stroke or transient ischemic attack	226	7.3
Coronary revascularization	152	4.9
Aortic aneurysm repair or bypass	33	1.1
Renal transplant	11	0.4
Charlson comorbidity index
Mean (SD)	3.9 (2.4)
Median (IQR)	4 (2-5)
0	366	11.8
1-2	568	18.4
3-4	990	32.0
5-6	775	25.0
≥7	395	12.8
Dialysis vintage, years
Mean (SD)	4.2 (4.6)
Median (IQR)	3 (1-6)
0-<1 years	715	23.1
1-<2 years	483	15.6
2-<3 years	403	13.0
3+ years	1488	48.2

Note. SD = standard deviation; IQR = interquartile range.

^aBased on study prescription closest to October 1, 2013.

^bSome results removed due to privacy regulations (sample size too small).

^cLocation was missing in ≤0.1% of patients; missing values combined with “urban” category due to privacy regulations.

^dIncome was categorized into quintiles of average neighborhood income on the index date. Income was missing in ≤0.1% of patients; missing values combined with the middle category due to privacy regulations.