length of the VF - 14 be reduced ? undergoing first eye cataract surgery : can the VF - 14 item specific responses in patients
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منابع مشابه
VF-14 item specific responses in patients undergoing first eye cataract surgery: can the length of the VF-14 be reduced?
AIMS To report the item specific responses of the VF-14 in a population of patients undergoing cataract surgery in their first eye and to determine whether or not the VF-14 can be reduced without compromising its performance as an index of cataract related visual impairment. METHODS The item specific responses to the VF-14 were analysed before (771 patients) and 4 months after (552 patients) ...
متن کاملFocussing both eyes on health outcomes: revisiting cataract surgery
BACKGROUND The appropriateness of cataract surgery procedures has been questioned, the suggestion being that the surgery is sometimes undertaken too early in the disease progression. Our three study questions were: What is the level of visual impairment in patients scheduled for cataract surgery? What is the improvement following surgery? Given the thresholds for a minimal detectable change (MD...
متن کاملIs there overutilisation of cataract surgery in England?
OBJECTIVES Following a 3.7-fold increase in the rate of cataract surgery in the UK between 1989 and 2004, concern has been raised as to whether this has been accompanied by an excessive decline in the threshold such that some operations are inappropriate. The objective was to measure the impact of surgery on a representative sample of patients so as to determine whether or not overutilisation o...
متن کاملMeasuring outcomes of cataract surgery using the Visual Function Index-14.
PURPOSE To determine which version of the Visual Function Index-14 (VF-14) most precisely measured cataract surgery outcomes, rescale the VF-14 using Rasch analysis, and create a short-form version for comparison. SETTING Flinders Medical Centre, Adelaide, South Australia, Australia. METHODS In this cohort study incorporating questionnaire development, participants were drawn from the catar...
متن کاملComparing outcomes of cataract surgery: challenges and opportunities.
BACKGROUND There is an increasing demand for routine assessment of surgical outcomes. However, for assessments to be valid, it is essential to understand the influence of patient characteristics on outcomes. The VF-14 visual function instrument offers a possible means of monitoring outcomes of cataract surgery. This article examines lessons learned in the course of an attempt to do this. METH...
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تاریخ انتشار 2002