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Estimated height from knee-height in caucasian elderly: Implications on nutritional status by Mini Nutritional Assessment

  • Published:
The journal of nutrition, health & aging

Abstract

Objectives

To investigate if the use of estimeted height (EH) by currently available prediction formulas might affect the screening and outcome prediction attitudes of both the Mini Nutritional Assessment (MNA) and its short-form version (MNA-SF).

Design

A 6-month observational study.

Setting

Two long-term cares of the province of Como.

Participants

266 resident elderly (102 men, 164 women; mean age±SD: 80.4±8.6 years).

Measurements

Subjects were studied by anthropometry (weight, standing height, knee-height, arm and calf circumferences, triceps skinfold) and biochemistry (albumin and prealbumin). Nutritional status was assessed using both MNA and MNA-SF. At 6 months, major outcome were: death, infections and bedsores.

Results

In overall population, prediction formulas significantly underestimated real height. The bias by Italianspecific equation was higher than that by nationally-representative formulas for white Americans. The use of EHs produced significant differences in body mass index (BMI) but these did not affect nutritional status scoring by MNA and MNA-SF (r≥0.99, p<0.0001). Cohen’s kappa statistic also showed an almost perfect concordance (>0.9). Moreover, similar degrees of correlation were found between nutritional parameters and both MNA and MNA-SF scores by BMI from SH and EHs. After 6 months, major complications occurred in twenty-eight patients (11.6%). The use EHs did not affect the distribution of events among MNA and MNA-SF nutritional classes.

Conclusion

In Italian elderly, height prediction by nationally representative equations for white Americans should be preferred to that by ethnic-specifc formula. However, the use of both models does not seem to affect nutritional screening and outcome prediction by MNA and MNA-SF.

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Authors and Affiliations

  1. International Center for the Assessment of Nutritional Status (ICANS) — Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, Universita degli Studi di Milano, via Botticelli 21, 20133, Milano, Italy

    Emanuele Cereda, S. Bertoli & A. Battezzati

  2. Servizio di Nutrizione Clinica e Dietetica, ASL Como, Como, Italy

    A. Vanotti

  3. International Center for the Assessment of Nutritional Status (ICANS), University of Milan, via Botticelli 21, 20133, Milan, Italy

    Emanuele Cereda

Authors
  1. Emanuele Cereda
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  2. S. Bertoli
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  3. A. Vanotti
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  4. A. Battezzati
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Correspondence to Emanuele Cereda.

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Cereda, E., Bertoli, S., Vanotti, A. et al. Estimated height from knee-height in caucasian elderly: Implications on nutritional status by Mini Nutritional Assessment. J Nutr Health Aging 14, 16–22 (2010). https://doi.org/10.1007/s12603-010-0004-2

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  • DOI: https://doi.org/10.1007/s12603-010-0004-2

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