Boehler 2014.

Methods	Prospective, single‐centre, open‐label, randomised study.
Participants	73 outpatients with isolated superficial vein thrombosis of the legs. Thrombus length ≥ 5 cm and confirmed by compression ultrasonography. Mean age 56.3 years (SD 13.2) in compression stockings group and 60.3 years (SD 14.8) in control group.
Interventions	Thigh‐length compression stockings, class II (23‐32 mmHg; Venotrain, Bauerfeind, Zeulenroda, Germany) for 3 weeks. No compression.
Outcomes	Primary outcome: reduction of spontaneous and induced pain as assessed by a VAS and Lowenberg test. Secondary outcomes: consumption of analgesics, thrombus length, skin erythema, D‐dimer, and quality of life through the SF‐36. Main safety outcomes: symptomatic or asymptomatic DVT and HIT.
Notes	All participants received LMWH at prophylactic dosage (enoxaparin 40 mg/day). NSAIDs (mefenamic acid, diclofenac, and dexibuprofen) were allowed.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Method of sequence generation not reported. "The randomization procedure was performed in a 1:1 ratio in blocks of 20 with closed envelopes."
Allocation concealment (selection bias)	Unclear risk	Unclear if envelopes were sealed and sequentially numbered. "The randomization procedure was performed in a 1:1 ratio in blocks of 20 with closed envelopes, with the investigators not being aware of the sequence within the envelopes."
Blinding (performance bias and detection bias) All outcomes	High risk	Open study.
Incomplete outcome data (attrition bias) All outcomes	High risk	7/80 (8.7%) participants initially enrolled were excluded from the analysis due to missing data during follow‐up.
Selective reporting (reporting bias)	Low risk	All outcomes described in methods section were reported in results section of the study publication.