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Table 1 Demographic and socioeconomic characteristics of the sample at baseline and 5-year relative weight changea (n = 9222 women and n = 3629 men)

From: Influence of food preparation behaviors on 5-year weight change and obesity risk in a French prospective cohort

  Women % or mean (SD) Men % or mean (SD) P-value2
5-year weight change (%) 1.2 (6.9) 0.6 (5.8) < 0.0001
BMI classes    < 0.0001
 Normal (< 25 kg/m2) 73.1 54.2  
 Overweight (< 30- ≥ 25 kg/m2) 18.6 36.4  
 Obese (≥30 kg/m2) 8.3 9.4  
Education    < 0.0001
 Primary 2.9 3.9  
 Secondary 32.9 35.7  
 Under-graduate 32.4 22.2  
 Post-graduate 31.8 38.2  
Occupation    < 0.0001
 Never employed 3.0 1.1  
 Self-employed 2.5 4.2  
 Manual worker, office worker 30.4 14.3  
 Intermediate profession 31.5 24.3  
 Managerial staff 32.6 56.1  
Monthly household income per household unit    < 0.0001
 Unwilling to answer 9.7 4.7  
 < 1200 euros 13.0 9.5  
 1200–1800 euros 39.7 36.4  
 1801–2700 euros 9.6 11.8  
 > 2700 euros 28.0 37.6  
Age    < 0.0001
 18–24 years 3.0 1.2  
 25–34 years 14.0 7.6  
 35–54 years 44.3 31.1  
 > 55 years 38.7 60.1  
Household composition    < 0.0001
 Single 17.7 13.5  
 Couple without child 39.9 53.6  
 Couple with ≥one child 31.9 24.0  
 Household without child and with ≥3 adults 10.5 8.9  
Physical activity level    < 0.0001
 Low 31.9 45.3  
 Moderate 45.7 38.2  
 High 22.4 16.5  
Smoking status    < 0.0001
 Never-smoker 53.6 41.2  
 Former smoker 34.3 48.5  
 Current smoker 12.1 10.3  
Dieting to lose weight    < 0.0001
 Never dieter 17.9 32.1  
 Former dieter 70.6 61.5  
 Current dieter 11.5 6.4  
  1. 2P-value represented the overall significance of each variable (Type 3 analysis of effects)
  2. a5-year relative weight change between 2011 and 2016