Study	Reason for exclusion
Chapman 2004	Not traumatic brain injury.
Cummings 2001	Not traumatic brain injury.
Danielczyk 1988	Not traumatic brain injury.
Feldman 2003	Not traumatic brain injury (same participants as Gauthier 2002).
Gauthier 2002	Not traumatic brain injury (same participants as Feldman 2003).
Gelinas 2000	Not traumatic brain injury.
Graff 2006	Not traumatic brain injury, not randomised controlled trial.
Harris 2005	Not traumatic brain injury.
Hozumi 1996	Not traumatic brain injury.
Kaufer 1998	Not traumatic brain injury.
Lanctot 2002	Not traumatic brain injury.
Lebert 1998	Not traumatic brain injury, not randomised controlled trial.
Newburn 2005	Not randomised controlled trial.
Olazaran‐Rodriguez 2004	Not traumatic brain injury, not randomised controlled trial.
Politis 2004	Not traumatic brain injury.
Powell 1996	Mixed population (traumatic brain injury data not separated), not randomised controlled trial.
Swanberg 2007	Not traumatic brain injury, not randomised controlled trial.
Tenovuo 2005	Not randomised controlled trial.
van Reekum 1995	Not randomised controlled trial.
von Cramon 1991	Mixed population (randomised controlled trial data not separated), not randomised controlled trial.