| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OUTPAT | OUTPAT_ICD10(M45) | Ankylosing spondylitis | 3177 | |
| PRIM_OUT | PRIM_OUT_NOT_USED_ICD10(M45) | Ankylosing spondylitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! | 2061 | |
| INPAT | INPAT_ICD10(M45) | Ankylosing spondylitis | 1480 | |
| INPAT | INPAT_ICD9(7200A) | Ankylosing spondylitis | 473 | |
| INPAT | INPAT_ICD8(71240) | Rheumatoid arthritis and allied conditions, Spondylitis ankylopoietica | 399 | |
| DEATH | DEATH_ICD10(M45) | Ankylosing spondylitis | 13 |