Categorical student outcomesControl
n (%)
Intervention
n (%)
OR
(95% CI)
P valueOR
(95% CI)
P valueOR
(95% CI)
P valueOR
(95% CI)
P valueOR
(95% CI)
P value
Ever smoked
  No2293 (77.70)2318 (84.17)0.59
(0.43 to 0.81)
 0.0010.58
(0.43 to 0.80)
0.0010.55
(0.39 to 0.78)
0.0010.57
(0.40 to 0.81)
0.0020.65
(0.44 to 0.97)
0.037
  Yes658 (22.30)436 (15.83)
Ever drunk alcohol
  No1677 (56.43)1735 (62.43)0.75
(0.58 to 0.79)
 0.0290.72
(0.56 to 0.92)
0.0090.72
(0.55 to 0.95)
0.0190.74
(0.56 to 0.97)
0.0280.76
(0.53 to 1.09)
0.134
  Yes1295 (43.57)1044 (37.57)
Ever been really drunk
  No788 (53.14)721 (61.21)0.50
(0.29 to 0.87)
 0.0140.47
(0.31 to 0.71)
<0.0010.42
(0.27 to 0.65)
<0.0010.47
(0.31 to 0.71)
<0.0010.66
(0.47 to 0.93)
0.019
  Yes695 (46.86)457 (38.79)
Ever been offered illicit drugs
  No1913 (64.41)1997 (72.54)0.52
(0.34 to 0.79)
 0.0020.51
(0.36 to 0.73)
<0.0010.44
(0.30 to 0.64)
<0.0010.51
(0.36 to 0.73)
<0.0010.70
(0.50 to 0.96)
0.028
  Yes, but did not try744 (25.05)567 (20.60)
  Yes, and tried them313 (10.54)189 (6.87)
Used contraception at last sexual intercourse
  No64 (23.10)36 (21.95)1.18
(0.56 to 2.48)
 0.6581.08
(0.50 to 2.35)
0.8411.60
(0.65 to 3.91)
0.3051.34
(0.56 to 3.22)
0.5111.40
(0.64 to 3.06)
0.405
  Yes213 (76.90)128 (78.05)
Use of NHS in past 12 months
  No1605 (53.22)1472 (52.59)0.96
(0.83 to 1.12)
 0.6390.96
(0.82 to 1.11)
0.5650.96
(0.81 to 1.13)
0.6000.99
(0.84 to 1.17)
0.9160.96
(0.82 to 1.13)
0.613
  Yes1411 (46.78)1327 (47.41)
Contact with police
  No2626 (86.52)2485 (88.43)0.75
(0.57 to 0.99)
 0.0410.74
(0.56 to 0.97)
0.0270.66
(0.49 to 0.88)
0.0040.72
(0.54 to 0.95)
0.0220.94
(0.73 to 1.21)
0.641
  Yes409 (13.48)325 (11.57)
  • CHU9D, Chuld Health Utility 9D NHS National Health Service; ESYTC, Edinburgh Study of Youth Transitions and Crime; GBS, Gatehouse Bullying Scale;  PedsQL, Pediatric Quality of Life Inventory; SDQ, Strengths and Difficulties Questionnaire; SWEMWBS, Short Warwick Edinburgh Mental Wellbeing Scale; MAS, Modified Aggression Scale;