Comparison 5. Sensitivity analysis: effect of compression treatment on PTS incidence and recurrence of DVT.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Cumulative incidence of any post‐thrombotic syndrome	7	1494	Risk Ratio (M‐H, Fixed, 95% CI)	0.81 [0.71, 0.92]
1.1 Smaller population	6	691	Risk Ratio (M‐H, Fixed, 95% CI)	0.54 [0.43, 0.69]
1.2 Larger population	1	803	Risk Ratio (M‐H, Fixed, 95% CI)	1.01 [0.86, 1.18]
2 Cumulative incidence of severe post‐thrombotic syndrome	5	1288	Risk Ratio (M‐H, Fixed, 95% CI)	0.78 [0.53, 1.15]
2.1 Smaller population	4	485	Risk Ratio (M‐H, Fixed, 95% CI)	0.44 [0.25, 0.80]
2.2 Larger population	1	803	Risk Ratio (M‐H, Fixed, 95% CI)	1.30 [0.74, 2.28]
3 Recurrence of deep venous thrombosis	5	1249	Risk Ratio (M‐H, Fixed, 95% CI)	0.96 [0.70, 1.31]