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separate cohorts were used to develop and validate the scoring system.
an open access, nurse-led leg ulcer service in Gloucestershire, UK.
patients with open leg ulceration lasting >4 weeks, an ankle–brachial pressure index ⩾0.85, and superficial venous reflux alone or mixed superficial and deep venous reflux on duplex imaging. Exclusion criteria were deep reflux only or occluded deep veins and inability to conduct plethysmography. The derivation cohort included 229 patients (median age 73 y, 58% women) who participated in the Effect of Surgery and Compression on Healing and Recurrence (ESCHAR) study, and the validation cohort included 86 patients (median …
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