Table S2.
List of ATC codes used for identifying the treatment groups
| Treatment | ATC code (Old code) |
|---|---|
| Topical treatment | |
| Calcipotriol | D05AX02 |
| Calcipotriol, combinations | D05AX52 |
| Non-biological systemic treatment | |
| Phototherapy | Procedure code |
| Phototherapy, PUVA, oral | DQ010 (Surgical Procedure codes) |
| Phototherapy, PUVA, bath | DQ011 (Surgical Procedure codes) |
| Methotrexate | L01BA01 |
| Cyclosporine | L04AD01 (L04AA01) |
| Acitretin | D05BB02 |
| Biologic systemic treatment | |
| Adalimumab | L04AB04 (L04AA17) |
| Infliximab | L04AB02 (L04AA12) |
| Etanercept | L04AB01 (L04AA11) |
| Ustekinumab | L04AC05 |
| Efalizumab | L04AA21 |
| Certolizumab | L04AB05 |
| Golimumab | L04AB06 |
Abbreviations: ATC, Anatomical Therapeutic Chemical Classification System; PUVA, Psoralen and ultraviolet A.