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Accuracy and reliability of the Pfeffer Questionnaire for the Brazilian elderly population

机译：普费弗问卷对巴西老年人口的准确性和可靠性

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摘要

The aging population calls for instruments to assess functional and cognitive impairment in the elderly, aiming to prevent conditions that affect functional abilities. OBJECTIVE: To verify the accuracy and reliability of the Pfeffer (FAQ) scale for the Brazilian elderly population and to evaluate the reliability and reproducibility of the translated version of the Pfeffer Questionnaire. METHODS: The Brazilian version of the FAQ was applied to 110 elderly divided into two groups. Both groups were assessed by two blinded investigators at baseline and again after 15 days. In order to verify the accuracy and reliability of the instrument, sensitivity and specificity measurements for the presence or absence of functional and cognitive decline were calculated for various cut-off points and the ROC curve. Intra and inter-examiner reliability were assessed using the Interclass Correlation Coefficient (ICC) and Bland-Altman plots. RESULTS: For the occurrence of cognitive decline, the ROC curve yielded an area under the curve of 0.909 (95%CI of 0.845 to 0.972), sensitivity of 75.68% (95%CI of 93.52% to 100%) and specificity of 97.26%. For the occurrence of functional decline, the ROC curve yielded an area under the curve of 0.851 (95%CI of 64.52% to 87.33%) and specificity of 80.36% (95%CI of 69.95% to 90.76%). The ICC was excellent, with all values exceeding 0.75. On the Bland-Altman plot, intra-examiner agreement was good, with p0.05 consistently close to 0. A systematic difference was found for inter-examiner agreement. CONCLUSION: The Pfeffer Questionnaire is applicable in the Brazilian elderly population and showed reliability and reproducibility compared to the original test.
机译：人口老龄化需要评估老年人功能和认知障碍的手段，目的是预防影响功能能力的疾病。目的：验证针对巴西老年人口的普费弗（FAQ）量表的准确性和可靠性，并评估翻译后的《普费弗问卷》的可靠性和可重复性。方法：巴西版本的常见问题适用于110名老年人，分为两组。两组均由两名不知情的研究人员在基线时和15天后再次评估。为了验证仪器的准确性和可靠性，针对各种临界点和ROC曲线计算了功能和认知功能下降的有无敏感性和特异性测量。使用类间相关系数（ICC）和Bland-Altman图来评估检查者内部和内部的可靠性。结果：对于认知功能下降的发生，ROC曲线在曲线下的面积为0.909（95％CI为0.845至0.972），敏感性为75.68％（95％CI为93.52％至100％）和特异性为97.26％ 。对于功能下降的发生，ROC曲线在曲线下产生的面积为0.851（95％CI为64.52％至87.33％）和特异性为80.36％（95％CI为69.95％至90.76％）。 ICC非常好，所有值均超过0.75。在Bland-Altman图上，检查者内部一致性良好，p> 0.05始终接近0。检查者间一致性存在系统差异。结论：Pfeffer问卷适用于巴西老年人口，与原始测试相比，具有可靠性和可重复性。

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