KEM Hospital Research Centre, Pune, India Umeå University, Sweden
World Health Organization, Geneva, Switzerland.
J Aging Health. 2014 Sep;26(6):1015-31. doi: 10.1177/0898264314535634. Epub 2014 Jun 11.
To use anchoring vignettes to evaluate reporting heterogeneity (RH) in self-rated mobility and cognition in older adults.
We analyzed vignettes and self-rated mobility and cognition in 2,558 individuals aged 50 years and above. We tested for assumptions of vignette equivalence (VE) and response consistency (RC). We used a joint hierarchical ordered probit (HOPIT) model to evaluate self-rating responses for RH.
The assumption of VE was met except for "learning" vignettes. Higher socioeconomic status (SES) and education significantly lowered thresholds for cognition ratings. After correction for RH, women, lower SES, and older respondents were significantly more likely to report greater difficulty in mobility. The influence of age, SES, and education on thresholds was less apparent for cognition.
Our study provides strong evidence of RH in self-rated mobility and cognition. We highlight the need to formally test basic assumptions before using vignettes to adjust self-rating responses for RH.
利用锚定情境来评估老年人自评移动能力和认知的报告异质性（RH）。
我们分析了 2558 名年龄在 50 岁及以上的个体的情境和自评移动能力和认知。我们测试了情境等效性（VE）和反应一致性（RC）的假设。我们使用联合层次有序概率模型（HOPIT）来评估 RH 下的自评反应。
VE 的假设除了“学习”情境外，均得到满足。较高的社会经济地位（SES）和教育显著降低了认知评分的门槛。在纠正 RH 后，女性、较低的 SES 和较年长的受访者更有可能报告在移动方面有更大的困难。年龄、SES 和教育对认知的门槛的影响不太明显。
我们的研究为自评移动能力和认知中的 RH 提供了有力的证据。我们强调在使用情境来调整 RH 下的自评反应之前，需要正式测试基本假设。
