Baseline characteristics of patients and controls in 2000. Values are n (%) unless otherwise specified.
| Variables | SLE, n = 210 | Controls, n = 138 | p |
|---|---|---|---|
| Age at study entry, yrs, mean ± SD | 44.29 ± 11.76 | 44.93 ± 13.02 | 0.634 |
| Race | |||
| White | 158 (75.2) | 123 (89.1) | 0.013 |
| Black | 24 (11.4) | 6 (4.4) | |
| Asian | 13 (6.2) | 7 (5.1) | |
| Others | 14 (6.7) | 2 (1.5) | |
| Post-menopause | 82 (39.0) | 39 (28.3) | 0.039 |
| Family history for CAD | 81 (38.6) | 58 (42.0) | 0.519 |
| Arterial hypertension | 67 (31.9) | 17 (12.3) | < 0.001 |
| Diabetes mellitus | 9 (4.3) | 0 (0) | 0.036 |
| Dyslipidemia | 67 (31.9) | 53 (38.4) | 0.212 |
| Smoking, current | 32 (15.2) | 22 (15.9) | 0.710 |
| Physical Activity Index score, mean ± SD | 37.24 ± 10.70 | 41.54 ± 11.14 | < 0.001 |
| Body mass index, mean ± SD | 24.96 ± 6.27 | 25.68 ± 5.33 | 0.269 |
| Creatinine, µmol/l, mean ± SD | 79.01 ± 32.60 | 70.21 ± 9.47 | 0.003 |
| Oral contraceptive | 10 (4.8) | 17 (12.3) | 0.02 |
| 10-yr Framingham Risk Score, mean ± SD | 3.09 ± 3.96 | 3.43 ± 4.90 | 0.485 |
| Followup duration, yrs, mean ± SD | 13.19 ± 4.65 | 15.63 ± 2.60 | < 0.001 |
SLE: systemic lupus erythematosus; CAD: coronary artery disease.