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Table 3 Individual and contextual characteristics of the overall sample (n = 4036)

From: Clustering of health-related behaviours and its relationship with individual and contextual factors in Portuguese adolescents: results from a cross-sectional study

  n n (%) Missing (%)
Agea 4036 13,58 (3,50); 10,50-16,42a 0
Gender 4036   0
Male   1878 (46,5%)  
Female   2158 (53,5%)  
Body Mass Index 3777   6,4
Normal weight   2830 (74,9%)  
Overweight   729 (19,3%)  
Obesity   218 (5,8%)  
Family Affluence Scale 3885   3,7
High   1591 (41,0%)  
Medium   735 (18,9%)  
Low   1559 (40,1%)  
Family Structure 4036   0
Living with both parents   3135 (77,7%)  
Other family typology   901 (22,3%)  
Family Communication 3786   6,2
Good communication   2142 (56,6%)  
Mixed communication   969 (25,6%)  
Poor communication   675 (17,8%)  
Don’t have or see   35 (0,9%)  
School Attachment 4019   0,4
Like   3130 (77,9%)  
Dislike   889 (22,1%)  
Academic Achievement 4008   0,7
Good   1981 (49,4%)  
Average   1831 (45,7%)  
Below average   196 (4,9%)  
Evenings with friends (n° per week)a 3938 0 (1); 0–7a 2,4
Been Bullied last 2 months 3991   1,1
Never   2498 (62,6%)  
Once or twice   945 (23,4%)  
More than twice   548 (13,6%)  
Bullied others last 2 months 3987   1,2
Never   2719 (68,2%)  
Once or twice   898 (22,5%)  
More than twice   370 (9,3%)  
Participation in a fight last 12 months 3956   2
Never   2876 (72,7%)  
Once or twice   768 (19,4%)  
More than twice   312,9%)  
  1. Data are presented as n (%) for categorical variables and as Median (Interquartile range); min-max for quantitative variables
  2. a Quantitative variables