Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa học đề tài : Response shift, recall bias and their effect on measuring change in health-related quality of life amongst older hospital patients | McPhail and Haines Health and Quality of Life Outcomes 2010 8 65 http content 8 1 65 I HEALTH AND QUALITY OF LIFE OUTCOMES RESEARCH Open Access Response shift recall bias and their effect on measuring change in health-related quality of life amongst older hospital patients Steven McPhail 1 2 3 and Terry Haines3 4 5 Abstract Background Assessments of change in subjective patient reported outcomes such as health-related quality of life HRQoL are a key component of many clinical and research evaluations. However conventional longitudinal evaluation of change may not agree with patient perceived change if patients understanding of the subjective construct under evaluation changes over time response shift or if patients have inaccurate recollection recall bias . This study examined whether older adults perception of change is in agreement with conventional longitudinal evaluation of change in their HRQoL over the duration of their hospital stay. It also investigated this level of agreement after adjusting patient perceived change for recall bias that patients may have experienced. Methods A prospective longitudinal cohort design nested within a larger randomised controlled trial was implemented. 103 hospitalised older adults participated in this investigation at a tertiary hospital facility. The EQ-5D utility and Visual Analogue Scale VAS scores were used to evaluate HRQoL. Participants completed EQ-5D reports as soon as they were medically stable within three days of admission then again immediately prior to discharge. Three methods of change score calculation were used conventional change patient perceived change and patient perceived change adjusted for recall bias . Agreement was primarily investigated using intraclass correlation coefficients ICC and limits of agreement. Results Overall 101 98 participants completed both admission and discharge assessments. The mean SD age was . The median IQR length of stay was 38 20-60 days. For agreement .
