Lafay L, Basdevant A, Charles M A, Vray M, Balkau B, Borys J M, Eschwège E, Romon M
Institut National de la Santé Et de la Recherche Médicale, Faculté de Médecine Paris Sud, Villejuif, France.
Int J Obes Relat Metab Disord. 1997 Jul;21(7):567-73. doi: 10.1038/sj.ijo.0800443.
To study the determinants and nature of dietary underreporting in a free-living population.
Cross-sectional study of nutritional and behavioural characteristics.
1030 weight-stable subjects, 501 women and 529 men older than 15 y, included in the Fleurbaix Laventie Ville Santé study.
Dietary intake was assessed using a 3 dy dietary record. Self assessed body weight and height were also recorded. Behavioural and socio-economic data were obtained from a questionnaire. Underreporters were defined as people with a reported ratio of energy intake to estimated basal metabolic rate lower than 1.05.
Underreporting concerned 16% of the population and was significantly more frequent in obese than in non obese subjects (P < 0.001). Underreporting was significantly associated with a high socio-professional class (P < 0.05), having dieted at least once (P < 0.01) and to be in dietary restraint (P < 0.05). Furthermore, the contribution of protein to energy intake was significantly higher in underreporters than in non underreporters, independently of weight status.
These data underline that underreporting may bias the assessment of energy and macronutrient intake, particularly in studies on obesity and dietary restraint. Questions about weight concern, dieting and dietary restraint may be useful to identify subjects who underestimate their food intake.
研究自由生活人群中饮食报告不足的决定因素和性质。
营养和行为特征的横断面研究。
1030名体重稳定的受试者，年龄超过15岁的501名女性和529名男性，纳入弗勒拜克斯-拉文蒂-维勒桑特研究。
使用3天饮食记录评估饮食摄入量。还记录了自我评估的体重和身高。行为和社会经济数据通过问卷调查获得。报告不足者定义为报告的能量摄入量与估计基础代谢率之比低于1.05的人。
报告不足者占总人群的16%，肥胖受试者中的报告不足情况明显比非肥胖受试者更常见（P<0.001）。报告不足与高社会职业阶层显著相关（P<0.05），至少节食过一次（P<0.01）以及存在饮食限制（P<0.05）。此外，无论体重状况如何，报告不足者蛋白质对能量摄入的贡献显著高于非报告不足者。
这些数据强调报告不足可能会使能量和宏量营养素摄入量的评估产生偏差，尤其是在肥胖和饮食限制的研究中。关于体重关注、节食和饮食限制的问题可能有助于识别低估食物摄入量的受试者。
