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Characteristics of systemic lupus erythematosus (SLE) cases and matched controls
| SLE cases | Controls | |
|---|---|---|
| N | 2834 | 14164 |
| Age at SLE diagnosis/Index date (years), mean (std dev) | 48.8 (17.6) | 48.8 (17.6) |
| Year of SLE diagnosis, median | 2005 | n/a |
| History of endometriosis diagnosis, n | 81 | 290 |
| Age at endometriosis diagnosis (years), mean (std dev) | 41.2 (10.3) | 40.0 (10.1) |
| Time between endometriosis diagnosis and SLE diagnosis/index date, mean (std dev) | 14.2 (8.6) | 14.1 (8.9) |
