Estimates of relative rate of onset of renal disease (lupus) for significant independent prognostic factors according to Cox proportional hazards model (forward selection)
| Number | χ2Model | p Value | Variables included | Hazard rate ratio (95% CI) | |
| 1 | 8.24 | <0.001 | Racial group | Caucasian | 1.0 |
| Asian | 1.5 (0.2, 11.2) | ||||
| Afro-Caribbean | 3.9 (1.7, 8.9) | ||||
| 2 | 13.8 | 0.003 | Racial group | Caucasian | 1.0 |
| 0.01 | APAG | Asian | 1.3 (0.2, 10.0) | ||
| Afro-Caribbean | 4.4 (1.9, 10.2) | ||||
| APAG | 2.6 (1.2, 5.7) | ||||