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Table 1 Descriptive statistics

From: The association between school class composition and suicidal ideation in late adolescence: Findings from the Young-HUNT 3 study

Individual variables N % (%) with suicidal ideation
Suicidal ideation    
  Yes 668 22.8  
  No 2255 77.2  
Gender    
  Boys 1404 48.0 20.2
  Girls 1519 52.0 25.3
Age    
  16 780 26.7 22.8
  17 1085 37.1 24.3
  18 879 30.1 20.7
  19 179 6.1 23.3
Parental education    
  Less than college or university 1588 54.3 24.5
  College or university 1335 45.7 20.8
School grade    
  First grade 914 31.3 25.5
  Second grade 1195 40.9 25.3
  Third grade 814 27.9 16.3
Living situation    
  Both parents 1749 59.8 18.6
  One parent 643 22.0 28.7
  Away from home 417 14.3 27.6
  Other 114 3.9 37.7
Divorced parents    
  Yes 839 28.7 29.5
  No 2084 71.3 20.2
Educational programme    
  Vocational programme 1366 46.7 28.0
  General programme 1557 53.3 18.4
  Total 2923   22.8
School class variables N % Mean (std. dev.)
Educational programme    
  Vocational programme 241 63.6  
  General programme 138 36.4  
Proportion of parents with higher education    0.40 (0.27)
Proportion of girls    0.52 (0.35)
School grade    
  First grade 133 35.1  
  Second grade 166 43.8  
  Third grade 80 21.1  
Total 379