Study sample characteristics before and after matching
| Characteristic | Before matching | p Value | After matching | p Value | ||
| Exposed (589) | Unexposed (7390) | Exposed (479) | Unexposed (958) | |||
| Age, mean (SD) | 63.28 (±12.25) | 48.87 (±19.17) | <0.0001* | 62.59 (±12.13) | 63.48 (±12.92) | 0.2124 |
| Gender, n (%) | 0.5750 | 0.1994 | ||||
| Male | 125 (21.22) | 1642 (22.22) | 101 (21.09) | 231 (24.11) | ||
| Female | 464 (78.78) | 5748 (77.78) | 378 (78.91) | 727 (75.89) | ||
| Race, n (%) | <0.0001* | 0.4716 | ||||
| White | 334 (56.71) | 3321 (44.94) | 269 (56.16) | 540 (56.37) | ||
| Black | 253 (42.95) | 4023 (54.44) | 208 (43.42) | 417 (43.53) | ||
| Other | 2 (0.34) | 46 (0.62) | 2 (0.42) | 1 (0.1) | ||
| Region, n (%) | 0.0544 | 0.0287* | ||||
| Urban | 167 (28.35) | 2379 (32.19) | 138 (28.81) | 331 (34.55) | ||
| Rural | 422 (71.65) | 5011 (67.81) | 341 (71.19) | 627 (65.45) | ||
| Charlson comorbidity index, mean (SD) | 4.01 (±2.48) | 2.65 (±2.17) | <0.0001* | 3.75 (±2.22) | 3.48 (±2.16) | 0.0300* |
*p<0.05.