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Table 3 Sex ratio of daily smoking.

From: Smoking trends among adolescents from 1990 to 2002 in ten European countries and Canada

Country 1990 1994 1998 2002 Sex X period (p-value)
Sweden 1.44 1.34 1.87** 2.49** .073
UK 1.25 1.30* 1.49** 1.64** .086
Norway 0.92 0.94 1.15 1.29 .080
Austria 0.62 0.99 1.29 1.27 .016
Belgium 1.33 0.78* 1.02 1.13 .004
Finland 0.89 0.80 1.00 1.10 .263
Switzerland 0.33* 1.29 1.00 1.01 .005
Hungary 0.68* 0.74* 0.51** 0.88 .023
Canada 1.40* 1.32* 1.27* 0.86 .083
Latvia 0.18** 0.34** 0.55** 0.65* .001
Poland 0.34** 0.44** 0.53** 0.49** .325
Total 0.88* 0.90* 1.08 1.07 <.001
  1. Sex ratio (daily smoking prevalence girls/daily smoking prevalence boys) in the 4 survey periods, gender significance per period and country, controlling for age. P-value of interaction of sex with period, separately for country and controlling for age.
  2. * p < 0.01; ** p < 0.001 (p-value indicating significant differences between boys and girls or to what extent the ratio differs from 1)