Table 4.
Baseline characteristics for patients with and without left bundle branch block (LBBB) after calculating propensity scores
| Variables | With LBBB (n = 130) | Without LBBB (n = 1275) | Total (n = 1405) | p value | Standardized differences |
|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | |||
| Age, mean ± SD (years) | 73.0 (10.3) | 73.5 (9.8) | 73.0 (10.3) | 0.5561 |
| N (%) | N (%) | N (%) | − 2.0 | ||
|---|---|---|---|---|---|
| Gender | |||||
| Female | 112 (86.2%) | 1114 (87.4%) | 1226 (87.3%) | 0.6914 | |
| Male | 18 (13.8%) | 161 (12.6%) | 179 (12.7%) | ||
| Race | |||||
| White | 109 (83.8%) | 1066 (83.6%) | 1175 (83.6%) | 0.9165 | 0.1 |
| Black | 9 (6.9%) | 86 (6.7%) | 95 (6.8%) | − 0.2 | |
| Hispanic | 5 (3.8%) | 72 (5.6%) | 77 (5.5%) | NA | |
| Asian or Pacific Islander | 3 (2.3%) | 25 (2.0%) | 28 (2.0%) | − 2.4 | |
| Native American | 1 (0.8%) | 5 (0.4%) | 6 (0.4%) | 1.3 | |
| Other | 3 (2.3%) | 21 (1.6%) | 24 (1.7%) | 1.1 | |
| Household income | 3.4 | ||||
| $1–24,999 | 32 (24.6%) | 325 (25.5%) | 357 (25.4%) | 0.3856 | − 1.0 |
| $25,000–34,999 | 35 (26.9%) | 340 (26.7%) | 375 (26.7%) | 4.0 | |
| $35,000–44,999 | 40 (30.8%) | 318 (24.9%) | 358 (25.5%) | − 0.8 | |
| 45,000 or more | 23 (17.7%) | 292 (22.9%) | 315 (22.4%) | − 0.2 |
| Comorbidities | N (%) | N (%) | N (%) | 2.6 | |
|---|---|---|---|---|---|
| Smoking | 16 (12.3%) | 157 (12.3%) | 173 (12.3%) | 0.9984 | − 0.9 |
| Alcohol | 2 (1.5%) | 20 (1.6%) | 22 (1.6%) | 0.9789 | − 0.5 |
| All cardiac catheterization | 130 (100.0%) | 1275 (100.0%) | 1405 (100.0%) | NA | |
| Cardiac catheterization with intervention | 6 (4.6%) | 97 (7.6%) | 103 (7.3%) | 0.2124 | 0 |
| Cardiac catheterization without intervention | 124 (95.4%) | 1178 (92.4%) | 1302 (92.7%) | 0.2124 | − 2.4 |
| Chronic congestive heart failure | 8 (6.2%) | 75 (5.9%) | 83 (5.9%) | 0.9005 | 1.3 |
| Chronic kidney disease | 22 (16.9%) | 194 (15.2%) | 216 (15.4%) | 0.6072 | 1.1 |
| Obesity | 19 (14.6%) | 191 (15.0%) | 210 (14.9%) | 0.9115 | 3.4 |
| Diabetes mellitus | 37 (28.5%) | 340 (26.7%) | 377 (26.8%) | 0.6600 | 4.0 |
| Hyperlipidemia | 3 (2.3%) | 31 (2.4%) | 34 (2.4%) | 0.9303 | − 0.8 |
| COPD | 27 (20.8%) | 266 (20.9%) | 293 (20.9%) | 0.9801 | − 0.2 |
| CAD | 83 (63.8%) | 798 (62.6%) | 881 (62.7%) | 0.7775 | 2.6 |
| Essential hypertension | 82 (63.1%) | 810 (63.5%) | 892 (63.5%) | 0.9187 | − 0.9 |
| Hypothyroidism | 28 (21.5%) | 277 (21.7%) | 305 (21.7%) | 0.9607 | − 0.5 |
| Hyperthyroidism | 0 | 6 (0.5%) | 6 (0.4%) | 0.4331 | NA |
| Propensity scores | 0.03091 | 0.03091 | NA | 0 |