title: Determinants of quality of life in community-dwelling older adults: comparing three cut-offs on the excellent-to-poor spectrum.
abstract: The aim of this study was to identify modifications in health, economic and social determinants of quality of life (QoL) in community-dwelling older adults when using different cut-offs to defining favorable QoL.
  
  
  
  Data of year 2011 annual assessment in 1003 older men and women from the Lc65+ cohort study were used. Overall QoL was self-rated as 'excellent,' 'very good,' 'good,' 'fair,' or 'poor.' To identify significant health (self-rated health, SF-12v2 physical and mental health), economic (financial situation), and social (living with others, being socially supported, emotional support, group activities participation) determinants of QoL, a cut-off was set at three different positions to define favorable QoL on the 'excellent' to 'poor' spectrum: at least 'good' (model 1); at least 'very good' (model 2); and 'excellent' only (model 3).
  
  
  
  In all three models, bivariable analyses indicated significant associations between QoL and at least one variable from each health, economic, and social dimension. In multivariable analyses, only health-related variables remained significantly associated with QoL in model 1. Model 3 additionally retained financial situation. In model 2, QoL was positively associated with physical health [odds ratio (OR) 1.10, p < 0.001], mental health (OR 1.12, p < 0.001), self-rated health (OR 2.43, p < 0.001), group activities participation (OR 1.43, p = 0.037), being socially supported (OR 1.58, p = 0.024), and not reporting financial difficulties (OR 1.76; p = 0.036).
  
  
  
  Using different cut-offs to defining favorable QoL results in important changes in the number and type of significant health, economic and social determinants. A cut-off between 'good' and 'very good' appears to best reflect the multidimensional nature of QoL.
authors: Institute of Social and Preventive Medicine (IUMSP), University of Lausanne Hospital Centre, Route de la Corniche 10, 1010, Lausanne, Switzerland. yves.henchoz@chuv.ch.
authors: Yves
authors: 0000-0002-8251-8393
authors: Y
authors: Henchoz
authors: Institute of Social and Preventive Medicine (IUMSP), University of Lausanne Hospital Centre, Route de la Corniche 10, 1010, Lausanne, Switzerland.
authors: Fabiana
authors: F
authors: Botrugno
authors: Institute of Social and Preventive Medicine (IUMSP), University of Lausanne Hospital Centre, Route de la Corniche 10, 1010, Lausanne, Switzerland.
authors: Sarah
authors: S
authors: Cornaz
authors: Service of Geriatric Medicine and Geriatric Rehabilitation, University of Lausanne Hospital Center, Lausanne, Switzerland.
authors: Christophe
authors: C
authors: Büla
authors: Institute of Social and Preventive Medicine (IUMSP), University of Lausanne Hospital Centre, Route de la Corniche 10, 1010, Lausanne, Switzerland.
authors: Sarah
authors: S
authors: Charef
authors: Institute of Social and Preventive Medicine (IUMSP), University of Lausanne Hospital Centre, Route de la Corniche 10, 1010, Lausanne, Switzerland.
authors: Brigitte
authors: B
authors: Santos-Eggimann
mesh_terms: D000368:Aged; D000375:Aging / Q000523:psychology*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D011788:Quality of Life / Q000523:psychology*; D012111:Residence Characteristics
keywords: Health; Older people; Quality of life; Socioeconomic factors