Unité Fonctionnelle pathologie professionnelle et sante au travail, hospital Sébastopol, 48 rue de Sébastopol, 51092 Reims cedex, France.
Occup Med (Lond). 2011 Sep;61(6):434-6. doi: 10.1093/occmed/kqr037. Epub 2011 Apr 19.
The visual analogue scale (VAS) is empirically used by occupational physicians to assess stress but very few studies have been published about its quantitative validation.
To assess the external validity of the VAS for the assessment of stress in the clinical occupational health setting by comparing its scores with the Perceived Stress Scale (PSS) of Cohen.
An anonymous self-completed questionnaire (PSS14) and the VAS were filled in by a random sample of 360 workers from several occupational health centres.
No difference between the mean scores of PSS14 and stress VAS was found. The equation of the linear regression was 'VAS score = -0.18 + 1008 × PSS14 score'. A VAS score of 7.0 was identified as having the best sensitivity/specificity ratio (0.74 and 0.93, respectively) for identifying those with 'high stress' using the PSS cut-off score of 7.2, using a receiver operator curve approach.
Our results support an acceptable agreement between the two tests, meaning that the two tools assess the same psychological construct. The good sensitivity/specificity ratio and the area under the curve close to 1 provide evidence that a VAS is suitable to help the occupational physician detect a high level of stress. The use of a VAS for stress assessment seems to be meaningful, suitable and useful for occupational physicians.
视觉模拟评分（VAS）被职业医生经验性地用于评估压力，但很少有研究发表其定量验证。
通过比较 VAS 评分与 Cohen 的压力感知量表（PSS）的评分，评估 VAS 在临床职业健康环境中评估压力的外部有效性。
对来自多个职业健康中心的 360 名随机工人进行匿名自我填写问卷（PSS14）和 VAS 评分。
PSS14 和压力 VAS 的平均评分之间没有差异。线性回归的方程为“VAS 评分=-0.18+1008×PSS14 评分”。使用 PSS 截断值 7.2，通过接收者操作特征曲线方法，VAS 评分为 7.0 被确定为具有最佳的灵敏度/特异性比值（分别为 0.74 和 0.93），用于识别“高压力”的人群。
我们的结果支持两种测试之间的可接受一致性，这意味着这两种工具评估相同的心理结构。良好的灵敏度/特异性比值和接近 1 的曲线下面积提供了证据，表明 VAS 适合帮助职业医生检测高水平的压力。使用 VAS 进行压力评估似乎对职业医生具有意义、合适且有用。
