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Table 2 Adjusted odds ratio (AOR) and 95% CI for high academic achievement in relation to the intake of healthy and unhealthy food items in girls and boys

From: Association of lifestyle habits and academic achievement in Norwegian adolescents: a cross-sectional study

  GIRLS BOYS
  Low academic achievementan (%) High academic achievementan (%) AOR b(95% CI) Low academic achievementan (%) High academic achievementan (%) AOR b(95% CI)
Vegetables (≥7 times per week) 79 (24) 253 (34) 1.82 (1.30-2.53)* 71 (18) 133 (22) 1.33 (0.94-1.88)
Fruit and berries (≥7 times per week) 83 (25) 298 (40) 2.09 (1.51-2.88)* 67 (17) 145 (24) 1.47 (1.04-2.07)*
Lemonade (≥4 times per week) 53 (16) 60 (8) 0.42 (0.27-0.64)* 91 (23) 103 (17) 0.67 (0.48-0.94)*
Sugar-sweetened soft drinks (≥4 times per week) 205 (62) 327 (44) 0.47 (0.35-0.64)* 312 (79) 472 (78) 0.92 (0.66-1.29)
Diet soft drinks (≥4 times per week) 96 (29) 208 (28) 1.01 (0.73-1.39) 103 (26) 145 (24) 0.94 (0.68-1.29)
Candy (≥4 times per week) 238 (72) 506 (68) 0.77 (0.56-1.06) 257 (65) 375 (62) 0.94 (0.70-1.26)
Salty snacks (≥4 times per week) 192 (58) 365 (49) 0.63 (0.47-0.85)* 237 (60) 363 (60) 0.97 (0.73-1.29)
  1. aA mean school grade between 0 and 3 was characterized as low, whereas a mean school grade between 4 and 6 was characterized as high.
  2. bAdjusted for BMI and maternal and paternal education.
  3. *p < 0.05.