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. 2015 Mar 10;15:233. doi: 10.1186/s12889-015-1585-9

Table 4.

Adjusted odds ratios in the ordinal logistic regression models for frequency of substance use by number of behaviours

AOR (95% CI) p -value
Marijuanai
  1 (only marijuana) 1
  2 1.66 (.82-3.39) 0.160
  3 3.19 (1.66-6.13) 0.001
Tobaccoii
  1 (only tobacco) 1
  2 2.18 (1.32-3.60) 0.003
  3 5.53 (3.15-9.74) <0.001
Binge drinkingiii
  1 (only binge drinking) 1
  2 3.58 (2.18-5.87) <0.001
  3 7.01 (4.42-11.10) <0.001

iF(2,142) = 7.13, p < .01.

iiF(2,142) = 18.17, p < .001.

iiiF(2,142) = 35.16, p < .001.