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.%目的 在预调查量表的基础上进一步筛选病毒性心肌炎患者生活质量量表的条目.方法 收集100例临床诊断为病毒性心肌炎的患者,在此资料的基础上采用频数分布法、离散趋势法、t检验法、克朗巴赫α系数法、相关系数法、因子分析法分别从不同角度筛选量表的条目.结果 采用频数分布法从集中趋势的角度筛选出17个条目,采用离散趋势法从敏感性角度筛选出15个条目,采用t检验法从敏感性和体现区分度的角度筛选出16个条目,采用克朗巴赫α系数法从内部一致性的角度筛选出16个条目,采用相关系数法从代表性和独立性角度筛选出12个条目,采用因子分析法从条目的 代表性角度筛选出18个条目.结论 病毒性心肌炎患者生活质量量表的条目筛选可以在临床流行病学资料的基础上结合多种统计方法较科学地进行.
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