广州市小学生体质健康监测系统问卷的信效度研究

目的对已修订的广州市小学生体质健康监测系统问卷进行信度和效度检验。方法采用多阶段分层整群随机抽样法选取广州市298名6~12岁小学生作为研究对象。用克隆巴赫Alpha系数反映内部一致性;前后间隔8~10 d开展两次问卷调查测量重测信度;用3 d日记作为效度标准评价效度。结果本研究有效应答率为98. 3%。总克隆巴赫α系数为0. 64,体力活动、静坐行为和睡眠的重测信度平均值分别是0. 46、0. 59、0. 63,效度平均值分别是0. 43、0. 60、0. 66。结论此系统问卷的信度和效度整体在合理可接受范围,可作为广州市小学生体质健康监测系统的标准化问卷。

Study on the reliability and validity of physical health surveillance system questionnaire for primary school students in Guangzhou

Objective To evaluate the reliability and validity of modified physical health surveillance system questionnaire for primary school students in Guangzhou. Methods A multistage stratified random cluster sampling method was used to select 298 primary school students aged 6-12 years old as study object in Guangzhou. Cronbach’s alpha coefficient was used to reflect the internal consistency;after8-10 days,questionnaire survey was performed again to detect test-retest reliability;3-day record was used to evaluate validity.Results The effective response rate was 98. 3%. The total Cronbach’s alpha coefficient was 0. 64,the average values of test-retest reliability of physical activity,sedentary behavior,and sleeping were 0. 46,0. 59,and 0. 63,respectively;the average values of validity were 0. 43,0. 60,and 0. 66,respectively. Conclusion The reliability and validity of physical health surveillance system questionnaire for primary school students in Guangzhou are within reasonable and acceptable ranges,which can be used as a standardized questionnaire for physical health surveillance system for primary school students in Guangzhou.