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A randomised controlled trial evaluated the cost and efficacy of community leg ulcer clinics that used four layer compression bandaging. The control treatment was provision of usual care by district nurses.1 Over the 12 months of follow-up, ulcers healed more quickly in the clinic group than in the control group (P=0.03). Statistical tests were two sided. Which of the following, if any, are true?
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P. Sedgwick (2010) studied this question.
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