Study	Reason for exclusion
Baz 2005	Not an RCT.
Bergqvist 1983	Perioperative thromboprophylaxis.
Bocharov 2011	Not an RCT and study included surgical patients.
Eichinger 2008	Inadequate population: hospitalised cancer patients.
Groen 2019	Other: none of the primary outcomes of this review were reported.
Haas 2011	Inadequate population: hospitalised cancer patients.
Heilmann 1995	Perioperative thromboprophylaxis.
Hills 1972	Perioperative thromboprophylaxis.
Kessler 2011	Not an RCT.
Macintyre 1974	Perioperative thromboprophylaxis.
Maxwell 2000	Perioperative thromboprophylaxis.
Meister 2008	Not an RCT.
Minnema 2004	Not an RCT.
NCT00004875	Prophylaxis for catheter‐related thrombosis.
NCT00031837	Study was terminated early, and no results were posted on ClinicalTrials.gov (accessed at clinicaltrials.gov/ct2/show/NCT00031837 on 13 June 2013).
NCT00662688	Study terminated. No published data available and results not reported in ClinicalTrials.gov.
NCT00790452	Study was terminated early because of a drug supply issue. Results of a single participant were posted (accessed at clinicaltrials.gov/ct2/show/results/NCT00790452 on 11 December 2012).
NCT04106700	Not an RCT.
NCT04352439	Not an RCT.
Niesvizky 2007	Inadequate type of intervention: antiplatelet agent vs placebo.
Paydas 2008	Not an RCT.
Poniewierski 1988	Inadequate population: hospitalised cancer patients.
Rajan 1995	Inadequate outcomes.
Salat 1990	No outcome data extractable and unlikely that trial will be published as full report in future.
Sideras 2007	Perioperative thromboprophylaxis.
Storrar 2019	Not an RCT.
Weber 2008	Inadequate population: hospitalised cancer patients.
Welti 1981	Perioperative thromboprophylaxis.
Zangari 2003	Not an RCT.
Zwicker 2019	Inadequate type of intervention: flavonoid.

RCT: randomised controlled trial.