Elastic compression stockings v no intervention or placebo stockings (control) for deep venous thrombosis at 2 years*

OutcomesNumber of studies (number of patients)Weighted event ratesRRR (95% CI)NNT (CI)
*PTS  =  post-thrombotic syndrome. Other abbreviations defined in glossary; weighted event rates, RRR, NNT, and CI calculated from data in article using a fixed effects model.
Any PTS3 (421)20%43%54% (38 to 66)5 (4 to 7)
Severe PTS3 (421)7%15%56% (20 to 75)13 (8 to 34)