Table 1. Patient characteristics undergoing cardiac catheterization procedures (N=12,773).

Patient characteristics	Mean ± SD or N (%)
Demographics
Age [18–95] years	63.5±12.4
Female	5,040 (39.5)
Charlson (0–15)	2.0±2.1
MI	3,580 (28.0)
CHF	3,524 (27.6)
PVD	1,207 (9.5)
Stroke	1,449 (11.3)
DM	4,625 (36.2)
Procedures (N=16,612)
# of complications	326 (2.0)
Date-level measures (N=2,118)
Procedures/day	7.8±3.7
Complications/day	0.2±0.9
Any complication	233 (11.0)

MI, myocardial infarction; Charlson, Charlson Comorbidity Index; CHF, congestive heart failure, PVD, peripheral vascular disease; DM, diabetes; SD, standard deviation.