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Using data from the six studies for assessing then-test/pre-test comparison on the outcome measure fatigue, the WMES was -0.21 (95% CI -0.32 to -0.10). The weighted mean effect size (WMES) was 0.47 (95% CI 0.31 to 0.63). A majority of the studies used the then-test method, which is also known as the retrospective pretest-posttest design method. All the articles were written in English and published between 19. Eventually 14 papers satisfied the inclusion criteria and entered the quality assessment stage. Results: Using pre-determined keywords, 584 relevant titles were identified. Methodological quality assessment was performed to assess the strength of evidence. Methods: A comprehensive search was conducted on seven English and Chinese databases to identify and collect studies focus on cancer patients QOL. Design: A systematic review was carried out under adhered to the guideline of the Quality of Reporting of Meta-Analyses. Nevertheless a rigorous evidence-base about this effect on cancer patients QOL is lacking. This phenomenon can falsify patient-reported measures, and has gained increasing attention recently in explaining research paradoxical findings.
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Background: People may alter their internal standards, known as response shift, when they experience changes in their health status. Quality of Life, Evidence-Based, Response Shift, Then-Test, Cancer PatientsĪBSTRACT: Aims and Objectives: To scrutinize the evidence of response shift effect on published quality of life (QOL) studies investigating the patient-reported outcome to obtain accuracy data as evaluating clinical practice. The Effect of Response Shift on Quality of Life among Cancer Patients: A Systematic ReviewĪUTHORS: Li-Fen Chao, Jun-Yu Fan, Fen-Fang Chung, Hung-Bun Lam
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(1999) Comprehensive Meta-Analysis: A Computer Program for Research Synthesis.