Curtin Health Innovation Research Institute and the School of Public Health, Curtin University, Perth, WA 6845, Australia.
J Nutr Health Aging. 2013 Feb;17(2):112-8. doi: 10.1007/s12603-012-0382-8.
Identify the extent of under-reporting of energy intake and the characteristics associated with implausible intakes in elderly women.
Dietary intake was assessed using a 3-day weighed food record. Protein intake was validated by 24-hour urinary nitrogen. To examine under-reporting, participants were grouped according to their energy intake and compared to the Goldberg cut-off equation. Logistic regression was performed to assess the influence of body mass index (BMI) and social-demographic factors on under-reporting.
Community dwelling elderly women from Perth, Western Australia.
217 elderly women aged 70-80 years.
Under-reporters had a higher physical activity level (p<0.001) compared with acceptable-reporters. The under-reporters also had a higher body weight (p=0.006), body mass index (BMI) (p=0.001), waist (p=0.011), hip circumference (p<0.001), whole body fat mass (p<0.001) and percentage body fat (p<0.001) than acceptable-reporters. Under-reporters had a significantly lower intakes of protein, fat, carbohydrate and alcohol (p<0.001) and fewer reported food items, compared with acceptable reporters. However, 24-hour urinary nitrogen was only marginally different between the two groups (p=0.053). Participants with a higher BMI were more likely to under-report their energy intake (BMI=25-29.9: odds ratio=2.98[95% CI=1.46-6.09]; BMI≥30: 5.84[2.41-14.14]).
Under-reporting energy intake in elderly women was associated with a higher BMI, body fat and higher self-reported physical activity levels. A higher BMI (≥25) appears to be most significant factor in determining if elderly women will underreport their food intake and may be related to body image. These results have implications for undertaking surveys of food intake in elderly women.
确定老年人能量摄入低报的程度，以及与不可信摄入量相关的特征。
使用 3 天称重食物记录评估膳食摄入量。通过 24 小时尿氮来验证蛋白质摄入量。为了检查低报情况，根据能量摄入量将参与者分组，并与 Goldberg 截断方程进行比较。使用逻辑回归评估体重指数（BMI）和社会人口因素对低报的影响。
澳大利亚西澳大利亚州珀斯的社区居住的老年人。
217 名年龄在 70-80 岁的老年人。
与可接受报告者相比，低报者的体力活动水平更高（p<0.001）。低报者的体重（p=0.006）、BMI（p=0.001）、腰围（p=0.011）、臀围（p<0.001）、全身脂肪量（p<0.001）和体脂百分比（p<0.001）也更高。与可接受报告者相比，低报者的蛋白质、脂肪、碳水化合物和酒精摄入量显著较低（p<0.001），报告的食物种类也较少。然而，两组间 24 小时尿氮仅略有差异（p=0.053）。BMI 较高的参与者更有可能低报其能量摄入（BMI=25-29.9：比值比=2.98[95%CI=1.46-6.09]；BMI≥30：5.84[2.41-14.14]）。
老年人能量摄入低报与 BMI、体脂和更高的自我报告体力活动水平有关。较高的 BMI（≥25）似乎是决定老年女性是否低报食物摄入量的最重要因素，可能与身体形象有关。这些结果对在老年女性中进行食物摄入量调查具有启示意义。
