Hains F, Waalen J, Mior S
Canadian Memorial Chiropractic College, Toronto, Ontario, Canada.
J Manipulative Physiol Ther. 1998 Feb;21(2):75-80.
To determine if a response set bias existed, to assess the factor structure and internal consistency, and to compare Neck Disability Index (NDI) scores with visual analogue scale (VAS) scores for pain intensity.
Although neck pain is a common problem, few instruments exist to assess the disability that accompanies it. The NDI is a 10 item paper-and-pencil measure of disability resulting from neck pain.
A cross sectional study evaluating the psychometric properties of the NDI.
Seven modified versions of the original NDI were developed to assess the presence or absence of response set bias using a one-way analysis of variance. Internal consistency was measured by a Cronbach alpha, two factor analyses (exploratory and confirmatory) were conducted to examine the structure of the NDI and stepwise regression analysis was used to examine the variables most predictive of VAS scores.
Results from 237 neck pain patients show that the responses given on the eight versions of the NDI are a function of the content and not of the format in which the items are presented. The NDI has stable psychometric characteristics, evidenced by high internal consistency (alpha = .92). In both factor analyses, one factor was extracted.
The NDI possesses stable psychometric properties and provides an objective means of assessing the disability of patients suffering from neck pain.
确定是否存在反应定势偏差，评估因子结构和内部一致性，并比较颈部功能障碍指数（NDI）得分与疼痛强度视觉模拟量表（VAS）得分。
尽管颈部疼痛是一个常见问题，但用于评估与之相关的功能障碍的工具很少。NDI是一种用于测量颈部疼痛导致的功能障碍的10项纸笔式测量工具。
一项评估NDI心理测量特性的横断面研究。
开发了原始NDI的七个修改版本，使用单因素方差分析评估反应定势偏差的存在与否。通过Cronbach α系数测量内部一致性，进行了两次因子分析（探索性和验证性）以检查NDI的结构，并使用逐步回归分析来检查最能预测VAS得分的变量。
237例颈部疼痛患者的结果表明，NDI八个版本的回答是内容的函数，而不是项目呈现格式的函数。NDI具有稳定的心理测量特征，高内部一致性（α = 0.92）证明了这一点。在两次因子分析中，均提取出一个因子。
NDI具有稳定的心理测量特性，为评估颈部疼痛患者的功能障碍提供了一种客观方法。
