Table 1 Chronic inflammatory diseases with ICD-9 codes included in the sensitivity analysis
Chronic inflammatory disease | ICD9 code |
|---|---|
Systemic lupus erythematosus | (710.0) |
Juvenile ankylosing spondylitis | (720.0) |
Scleroderma | (710.1) |
Inflammatory bowel disease | (555.x) |
Vasculitis | (447.6) |
Multiple sclerosis | (340) |
Psoriasis | (696.x) |
Juvenile rheumatoid arthritis | (714.3, 714.30, 714.31, 714.32, 714.33) |
Juvenile dermatomyositis | (710.3) |
Idiopathic thrombocytopenic purpura | (287.31) |
Necrotizing enterocolitis | (777.5) |
Kawasaki disease | (446.) |
Celiac disease | (579.0) |
Sickle cell anaemia | (282.6x) |