Trial author contacted	Trial author replied	Trial author provided data	Comments
Barton 2000	Yes	Yes	Yes	Additional data not used
Beck 2002	Yes	Yes	Yes	Additional data not used
Bourdel‐Marchasson 2000	Yes	Yes	Yes	Not used, and unable to provide data requested on weight
Bouillanne 2013	Yes	Yes	Yes	Data received on weight and energy intake
Brouillette 1991	No	N/A	N/A
Castellanos 2009	Yes	No	N/A
Chang 2005	Yes	No	N/A
Dennis 2005	Yes	Yes	Yes	Information used on complication rates
Duncan 2006	Yes	Yes	Yes	Awaiting data on length of stay
Essed 2007	Yes	No	N/A
Essed 2009	Yes	No	N/A
Faxen‐Irving 2011	Yes	Yes	Yes	Data on energy intake, length of stay, BMI and ADLs provided. No data available on infections
Gaskill 2009	Yes	Yes	No	Assume unable to provide data
Germain 2006	Yes	Yes	Yes	Data provided for BMI mean and SD of change
Hankey 1993	Yes	No	N/A
Hickson 2004	Yes	Yes	Yes	Author unable to provide this data on energy intake and hospital readmission as it was not measured, therefore not usable. Data provided on complications as requested
Holyday 2012	Yes	Yes	Yes	Data obtained and used for hospital readmission rates
Johansen 2004	Yes	No	N/A	Data not used
Kraft 2012	Yes	No	N/A
Kretser 2003	No	N/A	N/A	Unable to find contact for author
Larsson 1990	Yes	No	N/A	Data not used
Lin 2010	Yes	No	N/A
Lin 2011	No	N/A	N/A
Mathey 2001a	Yes	No	N/A
Mathey 2001b	Yes	No	N/A
Nijs 2006	No	N/A	N/A
Olofsson 2007	Yes	Yes	Yes	Data used for BMI, weight and complications
Pivi 2011	Yes	No	N/A
Potter 2001	Yes	No	N/A
Remsburg 2001	No	N/A	N/A
Salva 2011	Yes	No	N/A
Silver 2008	No	N/A	N/A
Simmons 2008	Yes	Yes	No	Data not available
Simmons 2010	Yes	Yes	No	Data not available
Smolliner 2008	Yes	Yes	Yes	Data provided for mean and SD of change for weight, BMI, handgrip, and QoL
Splett 2003	Yes	No	N/A
Taylor 2006	No	N/A	N/A
Van Ort 1995	Yes	No	N/A
Leslie 2012	No	N/A	N/A
Munk 2014	No	N/A	N/A
V an den Berg 2015	Yes	Yes	Yes	The clinical trial register number did not allow the trial to be identified within the register. The authors provided a link to the trial protocol via the WHO International Clinical Trials Registry Platform.
ADL: activities of daily living; BMI: body mass index; N/A: not applicable; QoL: (health‐related) quality of life; SD: standard deviation: WHO World Health Organisation