Table 1.
Characteristics by presence of a prolonged PR interval (PRi).
| Variable | PRi < 120 ms (n = 49) |
PRi 120–200 ms (n = 4503) |
PRi > 200 ms (n = 410) |
P value |
|---|---|---|---|---|
| Age (years) | 58.0 (0.1) | 61.2 (10.0) | 65.7 (10.1)∗ | <0.001 |
| Male (%) | 28.6∗ | 46.4 | 62.7+ | <0.001 |
| Race/ethnicity | <0.001 | |||
| White (%) | 57.1∗ | 38.6 | 39.3 | |
| Black (%) | 14.3∗ | 24.9 | 36.0 | |
| Hispanic (%) | 16.3∗ | 23.1 | 14.3+ | |
| Chinese (%) | 12.2 | 13.4 | 10.4 | |
| Waist circumference (cm) | 92.7 (13.5) | 96.3 (13.3) | 99.3 (12.5)+ | <0.001 |
| Height (cm) | 164.4 (8.1) | 166.6 (9.9) | 170.1 (9.8) | <0.001 |
| Weight (kg) | 70.3 (14.2)∗ | 76.6 (16.1) | 82.5 (16.1)+ | <0.001 |
| Current smoker (%) | 16.3 | 13.0 | 10.3 | NS |
| Systolic blood pressure (mmHg) | 122.6 (22.1) | 125.1 (21.2) | 130.0 (21.0) | <0.001 |
| Diastolic blood pressure (mmHg) | 72.0 (10.8) | 71.8 (10.3) | 72.8 (10.0) | 0.2 |
| Diabetes (%) | 8.2 | 10.8 | 12.9 | 0.5 |
| Heart rate (beats/minute) | 65.2 (9.2) | 63.1 (9.4) | 59.9 (9.2)+ | <0.001 |
| QRS duration (ms) | 93.3 (13.5) | 92.9 (13.4) | 97.7 (16.0)+ | <0.001 |
| PR interval (ms) | 111.6 (6.6) | 160.8 (17.7) | 218.2 (19.7)+ | <0.001 |
+ P < 0.001 compared to PRi interval 120–200 ms. ∗ P < 0.01 compared to PRi interval 120–200 ms.