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Table 3 Age at first consumption of alcohol, tobacco, and cannabis—differentiated by immigration background

From: Substance consumption in adolescents with and without an immigration background: a representative study—What part of an immigration background is protective against binge drinking?

Substance Total sample
Mean (SD)
Total sample
Median
Adolescents with immigration background
Mean (SD)
Adolescents without immigration background
Mean (SD)
t value p-value 95 % confidence interval for the difference
Alcohol (N = 7810) 12.87 (1.95) 13.00 12.75 (2.33) 12.90 (1.83) 2393 .017 .027–.271
Tobacco (N = 3153) 13.28 (1.86) 14.00 13.13 (2.11) 13.33 (1.76) 2457 .014 .040–.357
Cannabis (N = 1156) 14.33 (1.07) 14.00 13.13 (2.11) 14.33 (1.04) −.493 .622 −.177–.108
  1. Includes only cases with a “positive” lifetime prevalence