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Applying Data Envelopment Analysis to Preventive Medicine: A Novel Method for Constructing a Personalized Risk Model of Obesity

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  • Hiroto Narimatsu
  • Yoshinori Nakata
  • Sho Nakamura
  • Hidenori Sato
  • Ri Sho
  • Katsumi Otani
  • Ryo Kawasaki
  • Isao Kubota
  • Yoshiyuki Ueno
  • Takeo Kato
  • Hidetoshi Yamashita
  • Akira Fukao
  • Takamasa Kayama

Abstract

Data envelopment analysis (DEA) is a method of operations research that has not yet been applied in the field of obesity research. However, DEA might be used to evaluate individuals’ susceptibility to obesity, which could help establish effective risk models for the onset of obesity. Therefore, we conducted this study to evaluate the feasibility of applying DEA to predict obesity, by calculating efficiency scores and evaluating the usefulness of risk models. In this study, we evaluated data from the Takahata study, which was a population-based cohort study (with a follow-up study) of Japanese people who are >40 years old. For our analysis, we used the input-oriented Charnes-Cooper-Rhodes model of DEA, and defined the decision-making units (DMUs) as individual subjects. The inputs were defined as (1) exercise (measured as calories expended) and (2) the inverse of food intake (measured as calories ingested). The output was defined as the inverse of body mass index (BMI). Using the β coefficients for the participants’ single nucleotide polymorphisms, we then calculated their genetic predisposition score (GPS). Both efficiency scores and GPS were available for 1,620 participants from the baseline survey, and for 708 participants from the follow-up survey. To compare the strengths of the associations, we used models of multiple linear regressions. To evaluate the effects of genetic factors and efficiency score on body mass index (BMI), we used multiple linear regression analysis, with BMI as the dependent variable, GPS and efficiency scores as the explanatory variables, and several demographic controls, including age and sex. Our results indicated that all factors were statistically significant (p

Suggested Citation

  • Hiroto Narimatsu & Yoshinori Nakata & Sho Nakamura & Hidenori Sato & Ri Sho & Katsumi Otani & Ryo Kawasaki & Isao Kubota & Yoshiyuki Ueno & Takeo Kato & Hidetoshi Yamashita & Akira Fukao & Takamasa Ka, 2015. "Applying Data Envelopment Analysis to Preventive Medicine: A Novel Method for Constructing a Personalized Risk Model of Obesity," PLOS ONE, Public Library of Science, vol. 10(5), pages 1-11, May.
    • Handle: RePEc:plo:pone00:0126443
    DOI: 10.1371/journal.pone.0126443
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    References listed on IDEAS

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    1. Bruce Hollingsworth, 2008. "The measurement of efficiency and productivity of health care delivery," Health Economics, John Wiley & Sons, Ltd., vol. 17(10), pages 1107-1128, October.
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