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Table 5 Sociodemographic characteristics of respondents in the adolescent school survey; based on multiply imputed dataset

From: The Well London program - a cluster randomized trial of community engagement for improving health behaviors and mental wellbeing: baseline survey results

  Control (n = 596) Intervention (n = 618)
(95% CI) (95% CI)
School year %   
 Year 7 (11–12 years) 26.5 (22.0, 31.1) 27.5 (23.0, 32.0)
 Year 8 (12–13 years) 24.8 (21.4, 28.2) 24.6 (19.9, 29.3)
 Year 9 (13–14 years) 19.1 (14.8, 23.5) 22.0 (16.5, 27.5)
 Year 10 (14–15 years) 18.5 (15.4, 21.5) 16.8 (12.1, 21.5)
 Year 11 (15–16 years) 11.1 (6.3, 15.9) 9.1 (4.3, 13.9)
Gender % Female 52.1 (47.2, 57.0) 49.2 (43.1, 55.3)
Ethnicity %   
 White British 22.5 (10.8, 34.2) 22.4 (10.1, 34.7)
 White other 4.1 (1.5, 6.7) 8.0 (3.6, 12.4)
 Black Caribbean/other 8.6 (4.3, 12.9) 9.0 (4.9, 13.1)
 Black African 19.7 (12.8, 26.5) 20.9 (12.5, 29.4)
 Indian/Pakistani/Bangladeshi 23.7 (4.4, 43.0) 15.0 (6.5, 23.6)
 Other Asian 3.9 (1.6, 6.1) 5.7 (1.7, 9.6)
 Mixed 7.7 (4.7, 10.6) 10.5 (8.0, 13.1)
 Other 9.8 (5.7, 14.0) 8.4 (5.4, 11.5)
Lived in UK all their life % 74.7 (65.6, 83.8) 71.5 (63.1, 80.0)
Family Affluence Scale Items %   
 Family owns a vehicle 67.1 (62.0, 72.2) 68.2 (62.1, 74.3)
 Own bedroom at home 49.6 (43.4, 55.7) 55.7 (48.9, 62.5)
 Family owns a computer 86.9 (83.1, 90.7) 89.2 (85.8, 92.6)
 Family holidays this year   
  0 33.1 (28.5, 37.8) 30.4 (25.3, 35.5)
  1 39.3 (35.4, 43.1) 34.9 (30.0, 40.0)
  2 13.6 (9.6, 17.5) 16.7 (13.4, 20.0)
  >2 14.0 (10.4, 17.5) 18.0 (14.9, 21.1)
  1. Abbreviations: CI, confidence interval.