视功能指数量表(VF-14)的修订及评价

目的:对视功能指数量表(VF-14)进行修订并对中文修订本进行信效度评价,为探索国内适宜的视功能评价工具提供依据。方法:选取眼科专家及年龄相关性白内障患者为研究对象,收集量表的修订资料形成修订本;选取年龄相关性白内障患者作为研究对象,收集其一般情况及量表资料。采用t检验、相关分析等统计方法对量表的信度效度进行分析。结果:VF-14量表中文修订本的信度:(1)重测信度:量表各条目和总分的ICC范围值在0.814～0.976;(2)内部一致性:量表的Cronbachα系数为0.916;(3)评定者间信度:量表各条目和总分的ICC范围值在0.854～0.996;(4)分半信度:量表的分半信度系数为0.817。VF-14量表中文修订本的效度:量表的条目包括了所要测量视功能的各个方面;采用术前及术后视功能生存质量量表(VRQOL)得分与VF-14中文修订本得分做相关分析,相关系数分别为0.67和0.46;采用50例患者术前术后VF-14中文修订本得分进行t检验得t=17.18,P<0.05;采用患者主观视功能改善程度与量表分值变化做相关分析,显示量表的相关系数在0.35～0.62之间。结论:视功能指数量表(VF-14)中文修订本的信度效度较好。

Revision and evaluation of visual function index scale(VF-14)

·AIM:To revise visual function index scale(VF-14)and evaluate the reliability and validity of the Chinese revision,in order to provide the basis to explore the internal appropriate visual function evaluation tools.METHODS:Ophthalmologists and age-related cataract patients were studied,data were collected for the formation of revision;age-related cataract patients were selected as research subjects,the general situation and scale data were collected.The reliability and validity of the scale were analyzed using t’test and correlation analysis.RESULTS:VF-14 scale Chinese revision reliability:(1)test-retest reliability:the ICC range value of scale items and total score was 0.814-0.976;(2)internal consistency:scale Cronbach’α coefficient was 0.916;(3)interrater reliability:the ICC range values of scale items and total score was between 0.854 and 0.996;(4)split-half reliability:the split-half reliability coefficient of scale was 0.817.Validity of the Chinese revised VF-14 scale:scale items included all aspects of visual function measurement;correlation coefficient was 0.67 and 0.46 respectively using preoperative and postoperative visual function and quality of life scale scores and the VF-14 scores of the Chinese revision to take correlation analysis.The value of t’test of 50 patients with preoperative and postoperative VF-14 scores for the Chinese revision was 17.18,P<0.05.Using the patient subjective improvement of visual function and changes with the scale scores to do correlation analysis showed that the correlation coefficients of the scale was between 0.35 and 0.62.CONCLUSION:The Chinese revision scale of visual function index(VF-14)has good reliability and validity.