中学生龋齿简易风险自评问卷的研制

目的研制适合中学生的龋齿简易风险自评问卷。方法本研究包括问卷编制和信度、效度考评2个阶段。采用分层整群抽样从湖南省中学生中随机抽取96个班的学生构成现场测试样本,并从中随机抽取4个班的学生构成重测样本。结果(1)第1阶段得到包括8个指标的中学生龋齿简易风险自评问卷。G-P分析(good-poor analysis)显示各指标均具有较好的区分度(P<0.05);(2)重测Pearson相关系数为0.81(P<0.05);问卷的克朗巴赫α系数为0.55;调查过程中问卷得到了填写学生的认可;因子分析共提取2个公因子,解释总变异的41.01%。结论学生龋齿简易风险自评问卷具有良好的信度和效度。

Development of a Brief self-administered Risk Questionnaire for Dental Caries of Middle School Students

Objective To develop a self-administered risk questionnaire for dental caries of middle school students.Methods Two phases were conducted to develop the questionnaire,scale development and validation.Students of 96 classes were selected at random in Hunan Province as the field test sample using stratified sampling and cluster sampling.And students of four classes were chosen again from 96 classes to serve as the test-retest sample.SPSS 11.0 was used for data anlysis.Results (1) A brief self-administered risk questionnaire for dental caries of middle school students with 8 items was formed in phase 1.Good-poor analysis showed statistically significant results for each item(P<0.05).(2) Pearson correlation coefficient for test-retest was 0.81(P<0.05);Cronbach's coefficient was 0.55;our questionnaire was recognized by the students participating in field test;two common factors were extracted using explanatory factor analysis,accounting for 41.01% of total variation.Conclusion The brief self-administered risk questionnaire for dental caries of middle school students(MSS-DC-BSR) was a reliable and valid tool.