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Table 3 Logistic regression model for school attendance status by different groups of substance users

From: A prospective study of methamphetamine use as a predictor of high school non-attendance in Cape Town, South Africa

Dropout/absent n Odds ratio 95% CI
(Reference category = Never used meth, never used cannabis and not current smoker) 974   
   Current smoking, but never used meth or cannabis 150 2.16** 1.44 - 3.25
   Current smoking + life-time cannabis use, but never used meth 125 1.94* 1.09 - 3.47
   Current smoking + life-time cannabis use + life-time meth use 47 2.58* 1.24 - 5.36
Age > than norm for grade
(Ref. Age normal)
1265 2.16** 1.60 - 2.93
Ever repeated a year at school
(Ref. Never repeated a year)
1265 1.32 0.98 - 1.79
  1. * Significant at p < 0.05 level
  2. ** Significant at p < 0.01 level
  3. p-values were from Wald t-tests, df = 14
  4. Note: Some cases excluded from model owing to missing values