REPRODUCIBILITY AND VALIDITY OF AN EXPANDED SELF-ADMINISTERED SEMIQUANTITATIVE FOOD FREQUENCY QUESTIONNAIRE AMONG MALE HEALTH-PROFESSIONALS
REPRODUCIBILITY AND VALIDITY OF AN EXPANDED SELF-ADMINISTERED SEMIQUANTITATIVE FOOD FREQUENCY QUESTIONNAIRE AMONG MALE HEALTH-PROFESSIONALS
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DOI：
10.1093/oxfordjournals.aje.a116211
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发表时间：
1992-05-15
影响因子：
5
通讯作者：
WILLETT, WC
中科院分区：
文献类型：
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作者：
RIMM, EB;GIOVANNUCCI, EL;WILLETT, WC
作者评估了一份在51529名男性中进行的前瞻性研究中所使用的、包含131项条目的扩展版半定量食物频率问卷的可重复性和有效性。该问卷以邮寄方式对127名参与者进行了为期一年间隔的两次调查。在此期间，这些男性完成了两份间隔约6个月的一周饮食记录。通过这两种方法评估的大多数营养素摄入量的平均值相似。相隔一年的问卷所评估的营养素摄入量的组内相关系数，从不含补充剂的维生素E的0.47到含补充剂的维生素C的0.80不等。饮食记录所测量的能量调整后的营养素摄入量与第二份问卷（该问卷询问了包含饮食记录期间的一年中的饮食情况）之间的相关系数，从不含补充剂的铁的0.28到含补充剂的维生素C的0.86不等（平均r = 0.59）。在对饮食记录摄入量的周间变化进行调整后，这些相关性更高（平均r = 0.65）。这些数据表明，扩展版的半定量食物频率问卷具有可重复性，并为许多营养素在一年期间的摄入量提供了一种有用的测量方法。
The authors assessed the reproducibility and validity of an expanded 131-item semiquantitative food frequency questionnaire used in a prospective study among 51,529 men. The form was administered by mail twice to a sample of 127 participants at a one-year interval. During this interval, men completed two one-week diet records spaced approximately 6 months apart. Mean values for intake of most nutrients assessed by the two methods were similar. Intraclass correlation coefficients for nutrient intakes assessed by questionnaires one year apart ranged from 0.47 for vitamin E without supplements to 0.80 for vitamin C with supplements. Correlation coefficients between the energy-adjusted nutrient intakes measured by diet records and the second questionnaire (which asked about diet during the year encompassing the diet records) ranged from 0.28 for iron without supplements to 0.86 for vitamin C with supplements (mean r = 0.59). These correlations were higher after adjusting for week-to-week variation in diet record intakes (mean r = 0.65). These data indicate that the expanded semiquantitative food frequency questionnaire is reproducible and provides a useful measure of intake for many nutrients over a one-year period.