Cox proportional hazards model with cancer as the dependent variable
| OR (95% CI) | p Value | |
|---|---|---|
| AZA, azathioprine; CPM, cyclophosphamide; MTX, methotrexate; SDI, Systemic Lupus International Collaborating Clinics (SLICC) Damage Index, 6 months after diagnosis. | ||
| Age at diagnosis | 1.06 (1.01 to 1.11) | 0.018 |
| Male | 7.14 (1.61 to 33.3) | 0.009 |
| Malaria drugs | 0.15 (0.02 to 0.99) | 0.049 |
| AZA | 0.68 (0.13 to 3.37) | 0.632 |
| CPM | 2.47 (0.61 to 10.05) | 0.205 |
| MTX | 1.76 (0.17 to 18.23) | 0.634 |
| Smoking | 2.12 (0.52 to 8.63) | 0.294 |
| SDI | ||
| 0 | Reference | |
| 1 | 0.37 (0.06 to 2.36) | 0.294 |
| >1 | 1.29 (0.27 to 6.10) | 0.748 |
| Year of diagnosis | ||
| 1975–1985 | Reference | |
| 1986–1995 | 5.20 (0.42 to 64.74) | 0.2 |
| 1996–2005 | 7.934 (0.46 to 138.16) | 0.155 |