Table 4.
ECG Abnormalities by Gender
| Variable | Male (N = 608) | Female (N = 318) | P‐value |
|---|---|---|---|
| Atrial fibrillation | 72 (11.8) | 31 (9.7) | 0.336 |
| Paced rhythm | 55 (9.0) | 18 (5.7) | 0.069 |
| Interventricular conduction delay | 134 (22.0) | 54 (17.0) | 0.069 |
| Left posterior fascicular block | 8 (1.3) | 2 (0.6) | 0.336 |
| Left anterior fascicular block | 66 (10.9) | 30 (9.4) | 0.500 |
| First degree AV block | 71 (11.7) | 33 (10.4) | 0.562 |
| LBBB | 47 (7.7) | 36 (11.3) | 0.069 |
| RBBB | 45 (7.4) | 11 (3.5) | 0.017 |
| Heart rate# | 0.199 | ||
| ≤59 | 77 (16.0) | 45 (16.8) | |
| 60 to 100 | 365 (75.9) | 191 (71.3) | |
| ≥101 | 39 (8.1) | 32 (11.9) | |
| PR interval# | 0.194 | ||
| ≤120 | 6 (1.3) | 2 (0.7) | |
| 121 to 200 | 381 (79.4) | 227 (84.7) | |
| ≥201 | 93 (19.4) | 39 (14.6) | |
| QT interval # | 0.282 | ||
| Normal | 191 (31.4) | 111 (34.9) | |
| Abnormal | 417 (68.6) | 207 (65.1) | |
| QRS interval# | 0.210 | ||
| ≤110 | 328 (68.2) | 199 (74.3) | |
| 111 to 119 | 43 (8.9) | 18 (6.7) | |
| ≥120 | 110 (22.9) | 51 (19.0) |
LBBB = left bundle branch block; RBBB = right bundle branch block.