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Table 1 Characteristics [mean (Standard deviation)] of the participant in the validation study according self-reported diagnosis of depression.

From: Validity of a self-reported diagnosis of depression among participants in a cohort study using the Structured Clinical Interview for DSM-IV (SCID-I)

  Self-reported diagnosis (n = 62) No Self-reported diagnosis (n = 42) p
Age (years) 43.5 (12.4) 42.7 (10.4) 0.96*
Gender    
   % Women 77.4 61.9 0.09#
Smoking status (%)    
   Current smoker 27.9 16.7  
   Non smoker 39.3 50.0 0.37#
   Ex – smoker 32.8 33.3  
Body Mass Index (Kg/m 2 ) 23.3 (4.4) 23.7 (3.5) 0.29*
Physical activity during leisure time 25.3 (25.7) 32.8 (28.6)  
(METs/h-week)    
N° questionnaire (%)δ    
   Baseline 66.1   
   2-years follow-up 25.8   
   4-years follow-up 8.1   
  1. * Mann-Whitney U test.
  2. # Pearson's chi squared test.
  3. δ Self-reported diagnosis of depression can be collected though baseline questionnaire first follow-up questionnaire (2-years follow-up) or second follow-up questionnaire (4-years follow-up).