Objective: To further select the items based on the pre-test version of quality of life scale in patients with viral myocarditis.
Methods: Totally 100 patients with viral myocarditis were enrolled in this study. Methodologies including frequency distribution, discrete trend, t-test, Cronbach's α coefficient, correlation coefficient and factor analysis were applied to select items from different perspectives.
Results: A total of 17 items were selected by frequency distribution method from the perspective of central tendency, 15 items were selected by discrete trend method from the perspective of sensitivity, 16 items were selected by t-test method from the perspective of sensitivity and discrimination, 16 items were selected by Cronbach's α coefficient method from the perspective of internal consistency, 12 items were selected by correlation coefficient method from the perspective of representation and independence, and 18 items were selected by factor analysis method from the perspective of representation.
Conclusion: Item selection of quality of life scale in patients with viral myocarditis was successfully conducted based on the clinical epidemiological data using a variety of statistical methods.