Under-reporting of energy intake in elderly Australian women is associated with a higher body mass index

Xingqiong Meng, D Kerr, K Zhu, A Devine, V Solah, J Wright, Colin Binns, Richard Prince

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)


    Objectives: Identify the extent of under-reporting of energy intake and the characteristics associated with implausible intakes in elderly women. Design: 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. Setting: Community dwelling elderly women from Perth, Western Australia. Participants: 217 elderly women aged 70-80 years. Results: 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]). Conclusion: 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.

    Original languageEnglish
    Pages (from-to)112-118
    Number of pages7
    JournalThe Journal of Nutrition, Health and Aging
    Issue number2
    Publication statusPublished - Feb 2013

    Bibliographical note

    Funding Information:
    Acknowledgements: this study is supported by the Australian national health Medical research Council (Project grant: 458625), and X Meng was partly supported by the trustCo Scholarship of osteoporosis Australia. We are grateful to Fonterra Brands limited for providing the protein powder and Anchor Foods, Fremantle for providing processing assistance for the protein intervention study.

    Copyright 2013 Elsevier B.V., All rights reserved.


    • elderly women
    • energy intake
    • protein intake
    • Under-reporting
    • urinary nitrogen


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