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Table 1 Gender- and age-standardized frequencies of food habits by survey year

From: A school based study of time trends in food habits and their relation to socio-economic status among Norwegian adolescents, 2001–2009

  2001 2005 2009 Effect of year: 2005 vs 2001 Effect of year: 2009 vs 2005
% (n) % (n) % (n) OR 95% CI p-value OR 95% CI p-value
Daily fruit 26.5 (1863) 38.5 (2477) 37.9 (2180) 1.76 1.61’1.92 <.001 0.97 0.87’1.06 .468
Daily vegetables 20.6 (1444) 28.1 (1808) 28.3 (1630) 1.51 1.37’1.66 <.001 1.01 0.92’1.11 .823
Daily sweets 16.2 (1138) 10.1 (649) 7.9 (457) 0.58 0.51’0.66 <.001 0.77 0.67’0.90 .001
Daily soft drink 22.2 (1561) 13.8 (889) 12.1 (697) 0.55 0.49’0.62 <.001 0.84 0.73’0.96 .001
  1. OR ’ odds ratio; CI ’ confidence interval.