Table 3.
Characteristics of ssBITA and Non-ssBITA patients before and after propensity score matching
| Before Matching | After Matching | |||||
|---|---|---|---|---|---|---|
| Non-SS BITA | SS BITA | SD | Non-SS BITA | SS BITA | SD | |
| Characteristic | (n=6428) | (n=4841) | (n=3884) | (n=3884) | ||
| Age,mean(sd) | 61.9±10.4 | 61.2±10.0 | 0.07 | 61.0±10.2 | 61.0±9.9 | 0.00 |
| Gender | 0.02 | −0.01 | ||||
| Male | 5487(85.4%) | 4169(86.1%) | 3353(86.3%) | 3338(85.9%) | ||
| Female | 941(14.6%) | 672(13.9%) | 531(13.7%) | 546(14.1%) | ||
| Race | 0.07 | 0.03 | ||||
| White | 5216(81.1%) | 3972(82.0%) | 3148(81.1%) | 3187(82.1%) | ||
| Black | 397(6.2%) | 270(5.6%) | 233(6.0%) | 230(5.9%) | ||
| Other | 632(9.8%) | 420(8.7%) | 380(9.8%) | 346(8.9%) | ||
| Unknown | 183(2.8%) | 179(3.7%) | 123(3.2%) | 121(3.1%) | ||
| BMI | 0.04 | 0.02 | ||||
| Underweight | 26(0.4%) | 22(0.5%) | 14(0.4%) | 16(0.4%) | ||
| Normal weigh | 1167(18.2%) | 833(17.2%) | 665(17.1%) | 681(17.5%) | ||
| Overweight | 2733(42.5%) | 2004(41.4%) | 1655(42.6%) | 1628(41.9%) | ||
| Obese | 2502(38.9%) | 1982(40.9%) | 1550(39.9%) | 1559(40.1%) | ||
| Chronic Lung Disease > Mild | 769(12.0%) | 603(12.5%) | 0.02 | 467(12.0%) | 472(12.2%) | 0.00 |
| Diabetes | 2219(34.5%) | 1841(38.0%) | 0.07 | 1427(36.7%) | 1447(37.3%) | 0.01 |
| Hemoglobin A1c > 6% | 6371(99.1%) | 4763(98.4%) | −0.07 | 3842(98.9%) | 3846(99.0%) | 0.01 |
| Hypertension | 5483(85.3%) | 4162(86.0%) | 0.02 | 3334(85.8%) | 3352(86.3%) | 0.01 |
| Cerebrovascular Disease | 1024(15.9%) | 797(16.5%) | 0.01 | 614(15.8%) | 636(16.4%) | 0.02 |
| Peripheral Arterial Disease | 702(10.9%) | 510(10.5%) | −0.01 | 394(10.1%) | 419(10.8%) | 0.02 |
| Albumin | 0.06 | 0.01 | ||||
| Normal | 4363(67.9%) | 3367(69.6%) | 2674(68.8%) | 2681(69.0%) | ||
| Low | 1099(17.1%) | 727(15.0%) | 625(16.1%) | 616(15.9%) | ||
| Very Low | 966(15.0%) | 747(15.4%) | 585(15.1%) | 587(15.1%) | ||
| Off Pump | 752(11.7%) | 787(16.3%) | 0.13 | 606(15.6%) | 563(14.5%) | −0.03 |
| Hospital BITA Volume | 0.66 | 0.03 | ||||
| 1–20 | 2732(42.5%) | 955(19.7%) | 942(24.3%) | 954(24.6%) | ||
| 21–40 | 1413(22.0%) | 872(18.0%) | 909(23.4%) | 872(22.5%) | ||
| 41–60 | 782(12.2%) | 519(10.7%) | 532(13.7%) | 518(13.3%) | ||
| 61–80 | 521(8.1%) | 747(15.4%) | 521(13.4%) | 553(14.2%) | ||
| 80+ | 980(15.2%) | 1748(36.1%) | 980(25.2%) | 987(25.4%) | ||