Agarwal Shabnam, Allison Garry T, Agarwal Ajay, Singer Kevin P
Belle Vue Clinic, Kolkata, India.
Disabil Rehabil. 2006 Nov 30;28(22):1405-11. doi: 10.1080/09638280600641467.
To assess the reliability and validity of the Neck Pain and Disability Scale (NPAD) translated into Hindi.
Following a pilot study to ascertain uncertainties with existing terminology in the NPAD scale, a cervical radiculopathy patient cohort (n = 63) was assessed with the translated NPAD. Reliability was assessed by regression analysis for test-retest and by item-factor and factor-total score correlations. Face validity was compared in a cross-sectional design study with an asymptomatic group (n = 38). Convergent and divergent validity were investigated by correlating the NPAD scores with the Numerical Pain Rating Scale (NPRS) for neck and arm pain, and 10 cm long VAS Activity and VAS Depression scales.
ICC values for test-retest NPAD total and factor scores were >0.92 and R2 values >0.912. Pearson product moment correlation of item vs. factor scores varied from 0.17 - 0.91 and for factor vs. total scores 0.72 - 0.91. Differences in NPAD scores between the patient and the asymptomatic group were significant (t = 30.90, p < 0.05). Convergent validity was explained when Factor 2 (minus item 20) was correlated (r = 0.67) with NPRS maximum value scores. Divergent validity was illustrated by low correlation with VAS Activity (r = 0.15) and negative correlation with VAS Depression (r = -0.80) scores.
Based on the results of this study, the Hindi version of the NPAD is a reliable and valid instrument for the assessment of pain and disability in cervical radiculopathy patients.
评估翻译成印地语的颈部疼痛与功能障碍量表（NPAD）的信度和效度。
在一项初步研究以确定NPAD量表中现有术语的不确定性之后，使用翻译后的NPAD对一组神经根型颈椎病患者（n = 63）进行评估。通过重测回归分析以及项目-因子和因子-总分相关性来评估信度。在横断面设计研究中与无症状组（n = 38）比较表面效度。通过将NPAD评分与颈部和手臂疼痛的数字疼痛评分量表（NPRS）以及10厘米长的视觉模拟活动量表（VAS Activity）和视觉模拟抑郁量表（VAS Depression）进行相关性分析来研究收敛效度和发散效度。
NPAD总分和因子分重测的组内相关系数（ICC）值>0.92，决定系数（R2）值>0.912。项目与因子分的皮尔逊积差相关系数在0.17 - 0.91之间，因子与总分的相关系数在0.72 - 0.91之间。患者组和无症状组之间的NPAD评分差异显著（t = 30.90，p < 0.05）。当因子2（减去项目20）与NPRS最大值评分相关（r = 0.67）时，说明了收敛效度。与VAS Activity的低相关性（r = 0.15）和与VAS Depression评分的负相关性（r = -0.80）说明了发散效度。
基于本研究结果，NPAD的印地语版本是评估神经根型颈椎病患者疼痛和功能障碍的可靠且有效的工具。
