MMQ驗證結果統整表格

20190628自我紀錄：
在本篇文章撰寫過程中發現以下問題：
1.對於心理計量特性概念不清楚且容易混淆，因此常使用不適切的辭彙去解釋結果或應用。
2.段落缺乏連貫性。
3.英文寫作時，在使用保留及肯定辭彙的時機拿捏不恰當。

因此，統整該表格，待與老師或其他博後進一步釐清。

心理計量特性概念及MMQ驗證結果統整

目的	The purpose of this study was to estimate the test–retest reliability, random measurement error, and systematic error of the Multifactorial Memory Questionnaire (MMQ) in older adults with subjective memory impairment (SMI).
驗證方法	再測信度 (Test-retest reliability)	隨機測量誤差 (random measurement error)	Heteroscedasticity Bland-Altman plot (systematic trend)	系統性誤差 (systematic error)
統計指標	ICC (value)	MDC MDC%	Person’s r (value) Bland-Altman plot (visual -distributed)	Ÿ Effect size (value) Ÿ Paired-t-test (value) Ÿ Bland-Altman plot (visual)
判斷標準	Ÿ Group-level (>0.7) Ÿ Individual-level (<0.9)	Ÿ MDC (threshold) Ÿ MDC% < 30%	Ÿ Person’s r <0.3 (no heteroscedasticity)	Ÿ ES=差異程度small, medium, large Ÿ Paired-t-test (no significant, no systematic error)
研究結果	ICC 0.72 to 0.77	MDC-C =13.2 (32.5%) MDC-A = 18.4 (31.1%) MDC-S = 16.9 (78.2)	Person’s r <0.3	MMQ-C, d = 0.34 MMQ-C, mean diff. = 3.14
解釋	Ÿ the MMQ has sufficient reliability for use in research settings (e.g., the difference in mean scores between the experimental and control group) but not for use in clinical settings (e.g., for assessing individual participants)	Ÿ Changes scores between two measurements greater than the MDC95 should be considered true change beyond random measurement error. Ÿ The MDC95 can be used as a threshold to determine whether the individual participant differed significantly across two measurements of subjective memory performance. Ÿ the MDC95 % of the MMQ were >30%, indicating a substantial amount of random measurement error.	Ÿ the Pearson’s r of the 3 MMQ subscales were less than 0.3, implying that no existence of heteroscedasticity. In other words, the absolute of mean difference and the mean appear no trend of increasing or decreasing simultaneously between two measurements. Ÿ Bland-Altman plots enable users to assess visually the pattern of the data scatter (i.e., systematic trend) between the two measurements for the 3 MMQ subscales. The Bland-Altman plots showed that the mean difference of the 3 MMQ subscales were normal distributed within the tolerance of consistency.
應用	Ÿ These results support previous findings that the MMQ is reliable between two measurements in research settings.	Ÿ Results suggest a relatively large difference between two measurements of the MMQ is required to be considered as true change. Ÿ Therefore, clinicians and researchers should be cautious about the interpretation of the MMQ in older adults with SMI.	Ÿ Thus, these results supported that the mean difference of the MMQ is not depend on the difference subjective memory performance of individuals between the two measurements. Therefore, users could use a fixed MDC95 value as the threshold to determine whether a difference between two measurements is true regardless of the difference subjective memory performance of individuals.