Table 2.
Characteristics of patients with electrocardiogram measures prior to incidence/index data in rheumatoid arthritis (RA) and non-RA cohorts.
| Non-RA (N=422) |
RA (N=417) |
p value | |
|---|---|---|---|
| QT prolongation | 131 (31%) | 126 (30%) | 0.80 |
| Idiopathic QT prolongation | 75 (18%) | 63 (11%) | 0.30 |
| Marked QT prolongation | 32 (8%) | 35 (8%) | 0.66 |
| Idiopathic Marked QT prolongation | 12 (3%) | 9 (2%) | 0.52 |
| Heart Rate < 50 beats/min | 37 (9%) | 52 (12%) | 0.08 |
| Heart Rate > 100 beats/min | 61 (14%) | 65 (16%) | 0.65 |
| Bundle Branch Block | 57 (14%) | 50 (12%) | 0.51 |
| Paced rhythm | 4 (1%) | 8 (2%) | 0.24 |
| Atrial Flutter | 23 (6%) | 19 (5%) | 0.55 |
| Atrial fibrillation | 5 (1%) | 5 (1%) | 0.98 |
| Left Ventricular Hypertrophy | 33 (8%) | 48 (12%) | 0.07 |
| SVT | 56 (13%) | 61 (15%) | 0.57 |
| ST-T | 74 (18%) | 76 (18%) | 0.79 |
| Low calcium | 0 | 0 | |
| Low magnesium | 12 (3%) | 18 (4%) | 0.25 |
| Low potassium | 109 (26%) | 103 (25%) | 0.71 |