OBJECTIVE: To compare venous ulcer recurrence and compliance with two strengths of compression hosiery. METHODS: This study was a randomized controlled trial with a 5-year follow-up. The setting was the leg ulcer clinics of a teaching and a district general hospital in Scotland, United Kingdom. Patients were 300 outpatients with recently healed venous ulcers, with no significant arterial disease, rheumatoid disease, or diabetes mellitus. Interventions were fitting and supply of class 2 or class 3 compression hosiery. Four-monthly refitting by trained orthotists and surveillance by specialist nurses were performed. The main outcome measures were recurrence of leg ulceration and compliance with treatment. RESULTS: Thirty-six percent (107/300) of patients had recurrent leg ulceration by 5 years. Recurrence occurred in 59 (39%) of 151 class 2 elastic compression cases and in 48 (32%) of class 3 compression cases. One hundred six patients did not comply with their randomized compression class, 63 (42%) in class 3 and 43 (28%) in class 2. The difference in recurrence is not statistically significant, but our estimate of the effectiveness of class 3 hosiery is diluted by the lower compliance rate in this group. Restricted ankle movement and four or more previous ulcers were associated with a higher risk of recurrence. CONCLUSIONS: There was no evidence of a difference in recurrence rates at the classic level of significance (5%), but the lowest recurrence rates were seen in people who wore the highest degree of compression. Therefore, patients should wear the highest level of compression that is comfortable.

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