中文版手机依赖性问卷在大学生群体的信度和效度分析

Validity and reliability of the Chinese version of Mobile Phone Involvement Questionnaire in college students

目的评价中文版手机依赖性问卷(MPIQ)在大学生中的效度和信度。方法选取在校大学生2122名,使用中文版MPIQ评定被试者手机依赖情况。1个月后,随机选取其中的60名测评中文版MPIQ以评定重测信度,并应用ROC曲线评估不同划界值的的真阳性率(灵敏度)和假阳性率(1-特异度),寻求最佳划界分。结果98.9%的受试者完成中文版MPIQ的所有条目填写。中文版MPIQ总分呈正偏态分布,中文版MPIQ得分性别无统计学差异,探索性因子分析趋向于单因子结构,方差解释值为49.01%。各条目载荷在0.54~0.77;Chronbachα系数和Spearman Brown分半信度为0.84和0.83,条目与总分的相关系数为0.54~0.76,重测信度为0.48(P<0.001),ROC曲线下面积0.707,最佳截断点32.5,敏感度为0.634,特异值为0.652,中文版MPIQ总分在32以上为手机依赖组。结论中文版MPIQ有较好的效度和信度,初步探讨最佳划界分为32分。

Objective To test the validity and reliability of the Chinese version of Mobile Phone Involvement Questionnaire(MPIQ)in college students.Methods We assessed the degree of phone dependence using the MPIQ among 2122 college students.One month later,60 students were randomly selected for assessment with the MPIQ,and the ROC curve was generated to evaluate the true positive rate(sensitivity)and false positive rate at different cutoff values to determine the optimal cutoff score of the MPIQ.Results Among 98.9%of the participants who finished all the items,their MPIQ scores show a positive skew distribution and a one-factor structure.The load scores of the items ranged from 0.54 to 0.77.The Cronbach's α coefficient and the Spearman Brown split reliability were 0.84 and 0.83,respectively,the correlation coefficients between the items and total score ranged from 0.54 to 0.76,and the test-retest reliability was 0.48(P<0.001).At the optimal cut-off score of 32,the sensitivity and the specificity of the MPIQ were 0.634 and 0.652,respectively.Conclusion At the optimal cut-off score of 32,the MPIQ has good validity and reliability for assessing phone dependence among college students.