Doctor Jason N, Slater Mark A, Atkinson Hampton J
San Diego Veterans Affairs Medical Center, USA University of California, San Diego, CA 9216, USA University of California, San Diego and San Diego State University Joint Doctoral Program in Clinical Psychology, San Diego, CA 92161, USA.
Pain. 1995 May;61(2):251-260. doi: 10.1016/0304-3959(94)00180-M.
Improved methods for pain measurement have both theoretical and clinical importance. This study evaluated the Descriptor Differential Scale (DDS) of Pain Intensity, a recent methodology designed for assessing pain reports in clinical samples. Experiment 1 evaluated the sensitivity of the measure to small changes in electrocutaneous stimulation relative to a traditional visual analogue scale (VAS) of pain intensity. Additionally, direct psychophysical scaling methods were employed to determine ratio-scale values for the DDS sensory items in relation to the electrocutaneous stimuli. This ratio scale was cross-validated by comparison with previously published ratio-scaled data from cross-modality matching pain intensity judgement studies. Experiment 2 evaluated the performance of the measure in both experimental and clinical pain samples, as well as the similarity of item-response patterns in each of these samples. Results indicate that the DDS of Pain Intensity is sensitive to small changes in electrocutaneous stimulation, has consistent ratio-scale properties across two different psychophysical methods, and demonstrates similar item-response patterns across divergent experimental and clinical samples. The results support the validity of the sensory DDS as a measure of pain intensity.
改进的疼痛测量方法具有理论和临床重要性。本研究评估了疼痛强度描述符差异量表（DDS），这是一种最近设计用于评估临床样本中疼痛报告的方法。实验1评估了该测量方法相对于传统疼痛强度视觉模拟量表（VAS）对皮肤电刺激微小变化的敏感性。此外，采用直接心理物理学标度方法来确定DDS感觉项目相对于皮肤电刺激的比率量表值。通过与先前发表的来自跨模态匹配疼痛强度判断研究的比率标度数据进行比较，对该比率量表进行了交叉验证。实验2评估了该测量方法在实验性和临床疼痛样本中的表现，以及每个样本中项目反应模式的相似性。结果表明，疼痛强度DDS对皮肤电刺激的微小变化敏感，在两种不同的心理物理学方法中具有一致的比率量表属性，并且在不同的实验性和临床样本中表现出相似的项目反应模式。这些结果支持了感觉DDS作为疼痛强度测量方法的有效性。
