Methods
Search strategy
The following databases were searched up until December
2007: Medline (from 1966), CINAHL (from 1982), Embase(from 1980), the Cochrane Central register of controlled
trials and the Physiotherapy Evidence Database (PEDro).5
A sensitive search strategy for identifying randomized
controlled trials was used6 along with the following MeSH
terms: parapleg$, quadripl$, tetrapleg$, wheelchair$ and
spinal cord. This search strategy was adjusted for each
database. In addition, the bibliographies of relevant systematic
reviews and clinical guidelines were hand searched.