Marriott L D, Robinson S M, Poole J, Borland S E, Godfrey K M, Law C M, Inskip H M
MRC Epidemiology Resource Centre, University of Southampton, Southampton SO16 6YD, UK.
Public Health Nutr. 2008 Jul;11(7):751-6. doi: 10.1017/S1368980007001292. Epub 2007 Nov 16.
To evaluate the relative validity of a food frequency questionnaire (FFQ) for assessing nutrient intakes in 6-month-old infants.
The FFQ was developed to assess the diets of infants born to women in the Southampton Women's Survey (SWS), a population-based survey of young women and their offspring. The energy and nutrient intakes obtained from an interviewer-administered FFQ were compared with those obtained from a 4-day weighed diary.
A sub-sample of 50 infants aged 6 months from the SWS had their diets assessed by both methods. The FFQ recorded the frequencies and amounts of milks, baby foods, regular foods and drinks consumed by the infants over the previous seven days. The diaries recorded the weights of all foods and drinks consumed by the infants on four separate days within 15 days following FFQ completion.
Spearman rank correlation coefficients for intakes of energy, macronutrients and 18 micronutrients, determined by the two methods, ranged from r = 0.39 to 0.86; adjustment for energy intake tended to increase the correlation coefficients, range r(a) = 0.55 to 0.89. Bland-Altman statistics showed that mean differences between methods were in the range of -12.5% to +12.5% except for vitamin B12 (-18.9%).
Although there were differences in absolute energy and nutrient intakes between methods, Spearman rank correlation coefficients indicated reasonable agreement in the ranking of intakes. The interviewer-administered FFQ is a useful tool for assessing energy and nutrient intakes of healthy infants aged about 6 months.
评估一份食物频率问卷（FFQ）用于评估6个月大婴儿营养素摄入量的相对有效性。
该FFQ旨在评估南安普敦妇女调查（SWS）中女性所生婴儿的饮食情况，SWS是一项针对年轻女性及其后代的基于人群的调查。将通过访员管理的FFQ获得的能量和营养素摄入量与通过4天称重饮食记录获得的摄入量进行比较。
从SWS中选取50名6个月大的婴儿作为子样本，两种方法都对他们的饮食进行了评估。FFQ记录了婴儿在过去七天内饮用的奶类、婴儿食品、常规食品和饮品的频率及数量。饮食记录则记录了在完成FFQ后的15天内，婴儿在四个不同日子里所摄入的所有食物和饮品的重量。
两种方法测定的能量、宏量营养素和18种微量营养素摄入量的Spearman等级相关系数范围为r = 0.39至0.86；对能量摄入量进行调整后，相关系数往往会增加，范围为r(a) = 0.55至0.89。Bland-Altman统计显示，除维生素B12（-１８.９％）外，两种方法之间的平均差异在-12.5％至+12.5％范围内。
虽然两种方法在绝对能量和营养素摄入量上存在差异，但Spearman等级相关系数表明摄入量排名具有合理的一致性。访员管理的FFQ是评估约6个月大健康婴儿能量和营养素摄入量的有用工具。
