Psychometric properties of the German version of the MacNew heart disease health-related quality of life questionnaire

Abstract

BackgroundThere is a lack of German-language, disease-specific health related quality of life instruments applicable in cardiac rehabilitation. The purpose of this project was to investigate the psychometric properties of the German version of the MacNew Heart Disease Health-related Quality of Life Questionnaire (MacNew) in patients undergoing cardiac rehabilitation.MethodsThe MacNew was filled out by 5692 inpatients. We analysed acceptance (number of missing values), ceiling and floor effects, reliability (Cronbach’s α), factor structure (confirmatory factor analysis), construct validity (correlation with a generic health-related quality of life instrument), and sensitivity to change.ResultsTwo items had more than 7% missing data. We observed neither floor nor ceiling effects. Cronbach’s α of the scales ranged from 0.78 (physical scale) to 0.95 (global scale). Confirmatory factor analysis failed to reproduce the proposed factor structure (CFI = 0.882; TLI = 0.871; RMSEA = 0.074). We therefore drafted our own model (CFI = 0.932; TLI = 0.921; RMSEA = 0.064), and observed a correlation pattern largely conforming to the hypotheses with a generic health-related quality of life instrument. The effect sizes we noted between the start and end of rehabilitation fell between 0.66 and 0.74; at the 6-month follow-up they ranged from 0.69 to 0.92.ConclusionsThe German version of the MacNew Heart Disease Health-related Quality of Life Questionnaire is a suitable instrument with which to measure the impairment experienced by individuals with heart disease during inpatient cardiologic rehabilitation. The social and the global scale must be interpreted cautiously.

Psychometric evaluation of the Sinhalese version of MacNew Heart Disease Health Related Quality of Life Questionnaire in patients with stable angina

“…The χ 2 /df ratio should be <2 in order to claim adequate fit and, in Model 1, the ratio was 1.39 indicating adequate fit. Although contrasting findings have been reported, for example in the English MacNew [ 25 ] and the German MacNew [ 27 ], the CFA in the current study suggested a 3-factor model for the MacNew. The interviewer-administered Sinhalese 3-factor MacNew is consistent with the original 3-factor structure of the self-administered MacNew [ 6 ] that has been substantially confirmed in each of the independently generated study reports in languages as diverse as Norwegian [ 11 ], Dutch [ 10 ], Chinese [ 28 ], Spanish [ 9 ] and Hungarian [ 29 ].…”

Short-term outcomes of surgical myocardial revascularization on health-related quality of life: a validation of the Arabic MacNew heart disease questionnaire

“…The overall Cronbach's alpha is 0.96. This is comparable to its version in other languages, e.g., 0.94 for French version [10], 0.90 to 0.94 for Danish, Norwegian, and Swedish versions, respectively [11], 0.93 for Korean version [12], and 0.95% for German version [13]. But much higher than 0.80 of the Turkish version [14].…”

The Polish MacNew heart disease heath-related quality of life questionnaire: A validation study

“…The emotional subscale, with one item, and the physical subscale, with 2 items, loaded most consistently with the original 3-factor structure. However, 5 of the social subscale items did not load with the original structure of the social scale which is consistent with similar proportions in other languages, e.g., German [14,30,31] and Portuguese [29]. The sexual activity item (#27) falls into the physical and social subscales in this report; however, this item was not included in the original factor analysis and has recently been shown to fall into the social rather than the physical subscale [22,29].…”