title: Baseline determinants of global diet quality in older men and women from the NuAge cohort.
abstract: Judicious food choices are of prime importance during aging.
  
  
  OBJECTIVE
  This study was conducted to identify individual and collective attributes determining global diet quality (DQ).
  
  
  METHODS
  Participants were 1,793 adults (52% women) from the NuAge study on nutrition and successful aging. Subjects aged 67 to 84 years in relatively good health were recruited from the Québec Medicare Database. Sociodemographic, affective, and cognitive data, health conditions, perceived physical health and functional status, dietary habits and dietary attributes and community resources were obtained using questionnaires. Body weight and height were measured and body mass index (BMI) was calculated. Three non-consecutive 24-hour diet recalls were collected at recruitment. DQ, assessed using the Canadian Healthy Eating Index (C-HEI, /100), was computed on the mean intakes from the diet recalls. Analyses were stratified by gender. Variables significantly related to DQ in bivariate analyses (p<.05) were entered into backward stepwise multiple regression analyses.
  
  
  RESULTS
  Among men, the final model showed higher education (β=0.23, p=.01), diet knowledge (β=0.96, p<.0001), number of daily meals (β=1.91, p=.02) and perceived physical health (β=0.06, p=.01) to be positive determinants of DQ, whereas alcohol consumption (β=-2.25, p=.05), wearing dentures (β=-2.31, p=.01) and eating regularly in restaurants (β=-1.65, p=.03) were negative determinants of DQ (adjusted R2 = 13.7%). Among women, higher education (β=0.29, p=.002), diet knowledge (β=0.54, p=.002), number of daily meals (β=3.61, p<.0001), and hunger (β=0.61, p<.0001) were positive determinants of global DQ; greater BMI (β=-0.16, p=.03) and chewing problems (β=-0.48, p=.03) were negative determinants of DQ (adjusted R2 = 7.8%).
  
  
  CONCLUSIONS
  These results point to several key factors influencing global DQ in older adults and also show gender-based differences. More research must be done to better understand how these factors change with aging and exert their impact on diet, particularly since variance in DQ was largely unexplained. As diet knowledge was an independent predictor for both genders, targeted, sustainable interventions are needed to ensure good diet quality as people age.
authors: Centre de recherche, Institut universitaire de gériatrie de Montréal, 4565 Queen Mary, Montréal, QC Canada, H3W 1W5. bryna.shatenstein@umontreal.ca
authors: B
authors: B
authors: Shatenstein
authors: L
authors: L
authors: Gauvin
authors: H
authors: H
authors: Keller
authors: L
authors: L
authors: Richard
authors: P
authors: P
authors: Gaudreau
authors: F
authors: F
authors: Giroux
authors: K
authors: K
authors: Gray-Donald
authors: M
authors: M
authors: Jabbour
authors: J A
authors: JA
authors: Morais
authors: H
authors: H
authors: Payette
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000428:Alcohol Drinking; D015992:Body Mass Index; D003778:Dentures; D004032:Diet / Q000592:standards*; D015930:Diet Records; D004034:Diet Surveys; D004522:Educational Status; D005247:Feeding Behavior; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006304:Health Status; D006801:Humans; D006815:Hunger; D008297:Male; D008409:Mastication; D062407:Meals; D011939:Mental Recall; D015999:Multivariate Analysis; D010465:Perception; D011792:Quebec; D012044:Regression Analysis; D012147:Restaurants; D012737:Sex Factors
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