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The journal of nutrition, health & aging

, Volume 15, Issue 6, pp 485–489 | Cite as

B vitamin status, dietary intake and length of stay in a sample of elderly rehabilitation patients

  • F. O’Leary
  • V. M. Flood
  • P. Petocz
  • M. Allman-Farinelli
  • Samir SammanEmail author
JNHA: Geriatric Science

Abstract

Objectives

To investigate the relationships between previous diet, biomarkers of selected B vitamins, nutritional status and length of stay.

Design

Cross sectional study. Setting: Geriatric rehabilitation patients, Sydney, Australia.

Participants

Fifty two consenting patients with normal serum creatinine levels and no dementia.

Measurements

Serum vitamin B12, plasma vitamin B6, serum and erythrocyte folate, homocysteine and methylmalonic acid (MMA) concentrations; dietary intake using a validated semi-quantitative food frequency questionnaire and nutritional assessment using the Mini Nutritional Assessment (MNA). Length of stay data were collected from medical records after discharge.

Results

The age was 80 ± 8 year (mean ± SD), BMI 26.4 ± 6.8 kg/m2 and MNA score 22 ± 3 indicating some risk of malnutrition. Deficiencies of vitamins B6, B12 and folate were found in 30, 22 and 5 subjects respectively. Length of stay was positively correlated with age and MMA (Spearman’s correlation 0.4, p<0.01 and 0.28, p<0.05 respectively) and negatively correlated with albumin, vitamin B6 and MNA score (Spearman’s correlation −0.35, −0.33 and −0.29, p<0.05). After adjustment for age and sex, ln vitamin B6 and ln MMA concentrations were significant in predicting ln LOS (p=0.006 and p=0.014 respectively).

Conclusion

The study indicates a high risk of vitamin B deficiencies in the elderly and suggests that deficiencies of vitamins B6 and B12 are associated with length of stay. This is concerning as B vitamin status is rarely fully assessed.

Key words

Nutritional assessment elderly vitamin B12 vitamin B6 folate 

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Copyright information

© Serdi and Springer Verlag France 2011

Authors and Affiliations

  • F. O’Leary
    • 1
  • V. M. Flood
    • 1
    • 2
  • P. Petocz
    • 3
  • M. Allman-Farinelli
    • 1
  • Samir Samman
    • 1
    • 4
    Email author
  1. 1.Discipline of Nutrition and Metabolism, School of Molecular BioscienceUniversity of SydneySydneyAustralia
  2. 2.PHN Group, IONEUniversity of SydneySydneyAustralia
  3. 3.Department of StatisticsMacquarie UniversitySydneyAustralia
  4. 4.Discipline of Nutrition and Metabolism, School of Molecular Bioscience, G08University of SydneySydneyAustralia

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