REPRODUCIBILITY AND VALIDITY OF A SEMIQUANTITATIVE FOOD FREQUENCY QUESTIONNAIRE
REPRODUCIBILITY AND VALIDITY OF A SEMIQUANTITATIVE FOOD FREQUENCY QUESTIONNAIRE
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DOI：
10.1093/oxfordjournals.aje.a114086
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发表时间：
1985-01-01
影响因子：
5
通讯作者：
SPEIZER, FE
中科院分区：
文献类型：
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作者：
WILLETT, WC;SAMPSON, L;SPEIZER, FE
本研究的目的是评估在一项大型前瞻性研究中使用的61项半定量食物频率问卷的可重复性和有效性。该表格对173名参与者进行了两次管理，间隔约1年（1980-1981），并在此期间收集了每个受试者的4个一周饮食记录。通过1周饮食记录估算的营养素摄入量的类内相关系数（无补充剂的总维生素A的范围为0.41，有补充剂的维生素B6的范围为0.79）与从问卷中计算的结果相似（无补充剂的总维生素A的范围为0.49，蔗糖的范围为0.71），表明这些方法在可重复性方面总体上具有可比性。除了蔗糖和总碳水化合物外，饮食记录中的营养摄入与总热量摄入调整后的问卷计算结果的相关性更强。从4个一周饮食记录中获得的平均热量调整摄入量与饮食记录后完成的调查问卷的相关系数从没有补充维生素A的0.36到补充维生素C的0.75不等。总体而言，根据饮食记录计算出的卡路里调整摄入量最低的五分之一的受试者中，有48%也属于最低的问卷五分之一，74%属于最低的问卷五分之一。同样，在饮食记录最高的五分之一组中，49%的人也在问卷调查最高的五分之一组中，77%的人在问卷调查最高的1或2分之一组中。这些数据表明，一份简单的自我管理的饮食问卷可以提供有关1年期间个人营养摄入量的有用信息。
The aim of this study was to evaluate the reproducibility and validity of a 61-item semiquantitative food frequency questionnaire used in a large propsective study among women. This form was administered twice to 173 participants at an interval of approximately 1 yr (1980-1981), and 4 one-wk diet records for each subjects were collected during that period. Intraclass correlation coefficients for nutrient intakes estimated by the 1-wk diet records (range = 0.41 for total vitamin A without supplements to 0.79 for vitamin B6 with supplements) were similar to those computed from the questionnaire (range = 0.49 for total vitamin A without supplements to 0.71 for for sucrose), indicating that these methods were generally comparable with respect to reproducibility. With the exception of sucrose and total carbohydrate, nutrient intakes from the diet records tended to correlate more strongly with those computed from the questionnaire after adjustment for total caloric intake. Correlation coefficients between the mean calorie-adjusted intakes from the 4 one-wk diet records and those from the questionnaire completed after the diet records ranged from 0.36 for vitamin A without supplements to 0.75 for vitamins C with supplements. Overall, 48% of subjects in the lowest quintile of calorie-adjusted intake computed from the diet records were also in the lowest questionnaire quintile, and 74% were in the lowest 1 of 2 questionnaire quintiles. Similarly, 49% of those in the highest diet record quintile were also in the highest questionnaire quintile, and 77% were in the highest 1 or 2 questionnaire quintiles. These data indicate that a simple self-administered dietary questionnaire can provide useful information about individual nutrient intakes over a 1 yr period.