【摘要】 目的评价应用于膳食模式研究的简化膳食频率问卷的信度和效度。方法对94名40～80岁上海市社区居民进行了两次简化膳食频率问卷(FFQ25)、一次完整膳食频率问卷(FFQ146)和一次3d24h膳食纪录(DR)的调查。FFQ25的重测信度以间隔2 w的两次食物摄入量比较和相关系数进行评价。FFQ25的效度以FFQ25与FFQ146、FFQ25与DR的食物摄入量和膳食模式分析结果进行评价。结果前后两次FFQ25的食物摄入量差别无统计学意义(P>0.05),相关系数在0.56～0.87(P<0.01)。FFQ25与FFQ146、DR食物摄入量的相关系数为0.31～0.72(P<0.01),膳食模式因子负荷相关系数为0.54～0.77(P<0.01)。膳食模式因子积分的Bland-Altman分析表明FFQ25与FFQ146、FFQ25与DR的因子积分具有较好的一致性。结论 FFQ25具有较好的重测信度和膳食模式分析效度,且简单方便,可用于调查城市中老年人群的膳食模式研究。更多还原

【Abstract】 Objective To evaluate the reproducibility and validity of a simple food-frequency questionnaire used in dietary patterns studies.Method The simple food-frequency questionnaire(FFQ25) was administered twice in 94 Shanghai community residents aged 40 to 80 years old for reproducibility assessment by comparing with the food intakes and the correlation coefficients.The dietary patterns analysis of FFQ25,whole food-frequency questionnaire(FFQ146) and 3d 24h dietary records(DR) were used for validity assessment.Results The difference of food intakes between two FFQ25 was not significant(P>0.05)and the correlation coefficients ranged from 0.56 to 0.87(P<0.01).The correlation coefficients of food intakes between FFQ25,FFQ146,and DR ranged from 0.31 to 0.72(P<0.01) and the correlation coefficients of factor loadings ranged from 0.54 to 0.77(P<0.01).In these three dietary patterns,there were good agreements between the factor scores from FFQ25 and FFQ146,FFQ25 and DR by Bland–Altman analysis.Conclusion FFQ25 showed reasonable reproducibility and validity of the major dietary patterns.It was very easy and convenient.It could be applied in dietary patterns studies in elderly people in cities.更多还原