| Study | Reason for exclusion |
|---|---|
| Aguilera 1988 | Not a RCT (case series) |
| Bart 1978 | No individual pharmacological drug assessed |
| Basso 1985 | Intervention did not aim to treat PDPH |
| De las Heras 1997 | Not a RCT (case report) |
| Eldor 1990 | Not a RCT (case series) |
| Ergün 2008 | Randomisation by alternation (odd hospital record numbers assigned to intervention and even numbers to control; information provided by the trialists) |
| Flaatten 1987 | Intervention did not aim to treat PDPH |
| Hakim 2005 | Not a RCT (clinical trial without control group) |
| Hodgson 1997 | Not a RCT (case report) |
| Lang 1993 | The orthostatic component of headache was not described |
| Naja 2009 | No individual pharmacological drug assessed |
| Oedit 2005 | No individual pharmacological drug assessed |
| Sandesc 2005 | No individual pharmacological drug assessed |
| Schwalbe 1991 | The orthostatic component of headache was not described |
| Torres 1986 | The orthostatic component of headache was not described |
| van Kooten 2008 | No individual pharmacological drug assessed |
| Widerlöv 1979 | Intervention did not aim to treat PDPH |
| Zenglein 1978 | Intervention did not aim to treat PDPH |
PDPH: post‐dural puncture headache RCT: randomised controlled trial