Variable | Systemic lupus erythematosus | Non-systemic lupus erythematosus | ||||||||
N | Event | Person-years | Incidence | N | Event | Person-years | Incidence | Incidence rate ratio (95% CI) | P value | |
All | 566 | 33 | 2021 | 1.63 | 306 866 | 21 218 | 2 314 298 | 0.92 | 1.78 (1.27 to 2.51) | <0.001 |
Incidence per 1000 person-years
*Incidence rate ratio: systemic lupus erythematosus versus non-systemic lupus erythematosus (95% CI).