Table 5. Quality assessment of RCTs.

Study	Random sequence generation	Allocation concealment	Blinding of participants and personnel	Blinding of outcome assessment	Incomplete outcome data	Selective reporting	Other bias
SELECT-D	Low	Low	High	Low	Low	Low	Low
Hokusai VTE Cancer	Low	Unclear	High	Low	Low	Low	Low
AMPLIFY	Low	Low	Low	Low	Low	Low	Low
EINSTEIN-PE/DVT	Low	Unclear	High	Low	Low	Low	Low
Hokusai-VTE	Low	Unclear	Low	Low	Low	Low	Low
RECOVER-I/II	Low	Low	Low	Low	Low	Low	Low

RCT, randomized controlled trial; Low, low risk; unclear, unclear risk; High, high risk.