The crude and age and sex adjusted incidence rate of SLE in general individuals, ITP, Hashimoto’s disease, Graves’ disease and AIHA population
| Group | Person-months | SLE event | Crude incidence rate* | Age and sex adjusted incidence rate* |
| General control (n=14 303) | 1 273 883 | 26 | 2.04 | 2.04 |
| Graves’ disease (n=7345) | 650 005 | 23 | 3.54 | 3.30 |
| Hashimoto’s thyroiditis (n=1513) | 118 482 | 12 | 10.13 | 15.01 |
| AIHA (n=121) | 6827 | 7 | 102.54 | 39.43 |
| ITP (n=697) | 53 382 | 28 | 52.45 | 52.60 |
Age and sex adjusted incidence rate, the weighting of standardisation was the age and sex distribution in general control.
*Rate, per 100 000 person-months.
ITP, idiopathic thrombocytopenic purpura; SLE, systemic lupus erythematosus.