Table 2

Baseline characteristics of students according to study condition

Control
n (%valid)
Intervention
n (%valid)
Total (n=11 316)5567 (49.2)5749 (50.8)
Gender
 Male2787 (51.1)2834 (50.0)
 Female2670 (48.9)2829 (50.0)
  Missing11086
Free school meals
 No4289 (77.3)4436 (77.5)
 Yes1258 (22.7)1290 (22.5)
  Missing2023
Location
 NI3469 (62.3)3554 (61.8)
 Scotland2098 (37.7)2198 (38.2)
  Missing00
Heavy episodic drinking*
 No5082 (92.2)5261 (92.4)
 Yes432 (7.8)431 (7.6)
  Missing5357
Ethnicity
 White4492 (95.3)4495 (94.5)
 Non-white248 (4.5)293 (5.5)
  Missing827961
  • The percentages are calculated on the basis of the complete cases only.

  • *Assessed at baseline as consuming >5 drinks in one or more episodes in the last 30 days.