Doris S F Yu1, David R Thompson, Cheuk-man Yu, Neil B Oldridge. 1. Rm 729, Esther Lee Building, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, and The Prince of Wales Hospital, Shatin, New Territories, Hong Kong. dyu@cuhk.edu.hk
Abstract
OBJECTIVE: To perform a psychometric evaluation of the Myocardial Infarction Dimensional Assessment Scale (MIDAS) in Chinese patients with coronary heart disease. DESIGN AND SETTING: Patients with angina (n=162), MI (n=124) or heart failure (n=95) were recruited from a regional university-affiliated hospital. The Chinese version of the MIDAS (C-MIDAS), the Hospital Anxiety and Depression Scale (HADS) and the Short-Form 36 Health Survey (SF-36) were administered to all patients at baseline and the C-MIDAS was also administered seven day (n=92) and three months (n=363) later. RESULTS: The C-MIDAS conforms to the 7-factor structure as proposed in the original version. It is reliable with Cronbach's alphas from 0.73 to 0.94 and test-retest reliabilities from 0.76 to 0.92. Four of its subscales (physical activity, insecurity, emotional reaction and dependency) correlated significantly with the SF-36 and the HADS in each diagnostic group and had good discriminative properties in terms of gender, emotional disturbance and perceived health deterioration, with responsiveness supported by medium-high effect sizes (0.43-0.83) and standardize response means (0.46-0.82). The other three subscales measuring treatment-related impacts added little to the validity and responsiveness of the C-MIDAS. CONCLUSION: To render the C-MIDAS a core health-related quality of life measure for Chinese-speaking patients with coronary heart disease, further studies need to clarify the content adequacy and cultural relevancy of those subscales measuring treatment-related impact.
OBJECTIVE: To perform a psychometric evaluation of the Myocardial Infarction Dimensional Assessment Scale (MIDAS) in Chinese patients with coronary heart disease. DESIGN AND SETTING:Patients with angina (n=162), MI (n=124) or heart failure (n=95) were recruited from a regional university-affiliated hospital. The Chinese version of the MIDAS (C-MIDAS), the Hospital Anxiety and Depression Scale (HADS) and the Short-Form 36 Health Survey (SF-36) were administered to all patients at baseline and the C-MIDAS was also administered seven day (n=92) and three months (n=363) later. RESULTS: The C-MIDAS conforms to the 7-factor structure as proposed in the original version. It is reliable with Cronbach's alphas from 0.73 to 0.94 and test-retest reliabilities from 0.76 to 0.92. Four of its subscales (physical activity, insecurity, emotional reaction and dependency) correlated significantly with the SF-36 and the HADS in each diagnostic group and had good discriminative properties in terms of gender, emotional disturbance and perceived health deterioration, with responsiveness supported by medium-high effect sizes (0.43-0.83) and standardize response means (0.46-0.82). The other three subscales measuring treatment-related impacts added little to the validity and responsiveness of the C-MIDAS. CONCLUSION: To render the C-MIDAS a core health-related quality of life measure for Chinese-speaking patients with coronary heart disease, further studies need to clarify the content adequacy and cultural relevancy of those subscales measuring treatment-related impact.
Authors: Robert J Mentz; James A Tulsky; Bradi B Granger; Kevin J Anstrom; Patricia A Adams; Gwen C Dodson; Mona Fiuzat; Kimberly S Johnson; Chetan B Patel; Karen E Steinhauser; Donald H Taylor; Christopher M O'Connor; Joseph G Rogers Journal: Am Heart J Date: 2014-07-30 Impact factor: 4.749