VF-14 item specific responses in patients undergoing first eye cataract surgery: can the length of the VF-14 be reduced?
VF-14 item specific responses in patients undergoing first eye cataract surgery: can the length of the VF-14 be reduced?
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DOI：
10.1136/bjo.86.8.885
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发表时间：
2002-08-01
影响因子：
4.1
通讯作者：
Steinberg, EP
中科院分区：
文献类型：
--
作者：
Friedman, DS;Tielsch, JM;Steinberg, EP
目的：报道VF-14在接受第一眼白内障手术的患者中的项目特异性反应，并确定是否可以在不影响其作为白内障相关视力损害指标的情况下降低VF-14的项目特异性反应。方法：分析一只眼在白内障手术前(771名患者)和术后4个月(552名患者)对VF-14的项目特异性反应，以确定是否可以在不影响其性能的情况下降低VF-14指数。研究对象来自美国三大城市72家眼科医生办公室的白内障手术患者的横断面纵向研究。结果：VF-14条目之间的两两相关均小于0.6，表明任何条目都不能仅基于冗余而被删除。在白内障摘除术后4个月时，10个条目与麻烦中的变化呈中度相关，11个条目与满意度的变化(r>；0.15)呈中度相关。11个项目在4个月时显示出有效大小>；0.4。这11个项目对于检测白内障相关的功能障碍或量化白内障功能受损的程度都是重要的。此外，还需要11个项目来充分检测有功能障碍的个体。三个项目(认人、烹饪和阅读大字)对白内障摘除的反应较差，与眼部并发症的相关性更强。结论：尽管之前的报告表明VF-14可以显著缩短，但我们的分析只证明删除三个项目是合理的。虽然得到的VF-11具有与VF-14类似的特性，但有限的时间节约并不能证明改变这一已经经过验证的仪器是合理的。
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) cataract surgery in one eye to determine if the VF-14 index can be reduced without compromising its performance. Patients studied were selected from a cross sectional longitudinal study of patients undergoing cataract surgery in 72 ophthalmologist's offices located in three metropolitan regions of the United States.Results: Pairwise correlations between items in the VF-14 were all less than 0.6, indicating that no items could be removed solely on the basis of redundancy. 10 items correlated moderately with change in trouble, and 11 correlated moderately with change in satisfaction (r > 0.15) at 4 months after cataract extraction. Eleven items demonstrated an effect size >0.4 at 4 months. These 11 items were either important for detecting cataract related functional disability or for quantifying the extent to which cataract impaired function. Additionally, 11 items were needed to detect adequately individuals with functional impairment. Three items (recognising people, cooking, and reading large print) were less responsive to cataract extraction and were more strongly associated with ocular comorbidities.Conclusions: While previous reports indicate that the VF-14 can be significantly shortened, our analysis only justifies removing three items. While the resulting VF-11 has properties similar to the VF-14, the limited time savings do not justify altering this already validated instrument.