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Aging Clinical and Experimental Research

, Volume 30, Issue 9, pp 1117–1125 | Cite as

Geriatric nutritional risk index as a simple tool for assessment of malnutrition among geriatrics in Northwest of Iran: comparison with mini nutritional assessment

  • Maryam Saghafi-Asl
  • Elnaz Vaghef-Mehrabany
  • Nahid Karamzad
  • Lida Daeiefarshbaf
  • Parinaz Kalejahi
  • Mohammad Asghari-Jafarabadi
Original Article

Abstract

Background

Older people are more likely to develop nutritional problems and timely diagnosis of malnutrition is crucial to prevent hazardous consequences following poor nutrition.

Aims

To evaluate the efficacy of Geriatric Nutritional Risk Index (GNRI) to assess nutritional status among non-hospitalized elderly, compared to mini nutritional assessment (MNA) among Iranian seniors.

Methods

One hundred and sixty-four subjects, aged ≥ 65 years old were recruited to our cross-sectional study from various districts of Tabriz (Tabriz, Iran). Anthropometric and biochemical measurements were performed, short- and long-form MNAs and GNRI were assessed in our study subjects. Sensitivity, specificity and predictive values of the three indices, agreement between them, and their correlation with anthropometric and biochemical parameters were evaluated. Receiver-operating characteristic (ROC) curve analysis was performed to determine the optimal cut-off point for GNRI in our study population.

Results

GNRI had lower sensitivity (50, 57%), but optimal specificity (94, 93%) and lower negative predictive value (NPV; 68, 71%) compared to MNA-LF and MNA-SF, respectively. We found a moderate agreement between GNRI and MNA-SF (K = 0.52) and MNA-LF (K = 0.46) scores. Significant correlations were observed between re-categorized MNAs as well as GNRI scores, and age, weight, MAC, CC, WC, albumin, and pre-albumin. The cut-off point of 110.33 was obtained for GNRI, according to the ROC curve.

Conclusions

Although GNRI may not be an efficient tool for screening malnutrition due to its lower sensitivity, it is moderately correlated with MNAs and also more useful when limited funding needs to target the truly malnourished seniors.

Keywords

Elderly Geriatric Nutritional Risk Index (GNRI) Mini nutritional assessment (MNA) Sensitivity Specificity 

Notes

Acknowledgements

This work was funded by the Research Vice Chancellor of Tabriz University of Medical Sciences, Tabriz, Iran (grant number: 5/97/515). The Research Vice Chancellor had no role in the design, analysis or writing of this article.

Author contributions

MS-A: Formulating the research questions, designing the study, carrying it out, analyzing the data, revision and approval of the final manuscript. EV-M: Analyzing the data, drafting the manuscript, revision and approval of the final manuscript. NK: Sampling of the study, carrying it out, revision and approval of the final manuscript. LD-F: Sampling of the study, carrying it out, revision and approval of the final manuscript. PK: Sampling of the study, carrying it out, revision and approval of the final manuscript. MA-J: Analyzing the data, revision and approval of the final manuscript.

Compliance with ethical standards

Conflict of interest

We declare herein that we have no conflict of interests.

Ethical approval

This study was conducted according to the guidelines laid down in the Declaration of Helsinki, and all procedures involving human subjects were approved by the ethics committee of Tabriz University of Medical Sciences (Ethics code:TBZMED.REC.1394.24).

Informed consent

Written informed consent was obtained from all subjects.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Maryam Saghafi-Asl
    • 1
  • Elnaz Vaghef-Mehrabany
    • 1
  • Nahid Karamzad
    • 2
  • Lida Daeiefarshbaf
    • 1
  • Parinaz Kalejahi
    • 1
  • Mohammad Asghari-Jafarabadi
    • 3
  1. 1.Department of Biochemistry and Diet Therapy, Talented Students Center, School of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
  2. 2.Maragheh University of Medical SciencesMaraghehIran
  3. 3.Department of Statistics and Epidemiology, Faculty of health, Road Traffic Injury Research CenterTabriz University of Medical SciencesTabrizIran

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