title: [Construction of a physiological aging scale for healthy people based on a modified Delphi method].
abstract: OBJECTIVE
  To build a physiological aging scale for healthy people.
  
  
  METHODS
  We collected age-related physiologic items through literature screening and expert interview. Two rounds of Delphi were implemented. The importance, feasibility and the degree of authority for the physiological index system were graded. Using analytic hierarchy process, we determined the weight of dimensions and items.
  
  
  RESULTS
  Using Delphy mothod, 17 physiological and other professional experts offered the results as follow: coefficient of expert authorities Cr was 0.86±0.03, coordination coefficients for the first and second round were 0.264(χ2=229.691, P<0.001) and 0.293(χ2=228.474，P<0.001), respectively. The consistency was good. The aging scale for healthy people included 3 dimensions, namely physical form, feeling movement and functional status. Each dimension had 8 items. The weight coefficients for the 3 dimensions were 0.54, 0.16, and 0.30, respectively. The Cronbach's α coefficient of the scale was 0.893, the reliability was 0.796, and the variance of the common factor was 58.17%.
  
  
  CONCLUSIONS
  The improved Delphi method or physiological aging scale is satisfied, which can provide reference for the evaluation of aging.
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Long
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Deng
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Xiong
authors.initials: X
authors.lastname: Liao
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wu
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Jianming
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Department of Epidemiology, School of Public Health, Nanchang University, Nanchang 330006, China.
authors.forename: Helang
authors.initials: H
authors.lastname: Huang
mesh_terms: D000375:Aging / Q000502:physiology*; D003697:Delphi Technique; D006801:Humans; D015203:Reproducibility of Results