Objective Question Post 1 Pre 2 ORa (95%) IC
    (n=47) (n=47) Post1 to Pre1
Nutrition        
  French fries are unhealthy because they… 91 96 2.09 (0.36, 12.02)
  Vegetables can particularly help decrease the risk for… 72 57 0.52 (0.22, 1.22)
  Oranges are high in… 94 94 0.20 (0.05, 0.76)
  What food or drink in high in calcium? 49 53 0.84 (0.38, 1.90)
  What food is high in protein? 30 53 3.80 (1.61, 8.96)
  Which protein below is the last healthy? 79 79 1.85 (.61, 5.58)
  What food is good for the brain? 83 87 1.00 (0.34, 2.93)
  Vegetables are particularly good for your … 81 89 1.99 (0.61, 5.58)
  All of the following are considered junk food EXCEPT… 87 85 0.84 (0.26, 2.71)
  Protein helps build strong  ________ 77 57* 0.41 (0.17, 1.00)
  Calcium helps build strong ________ 66 60 0.76 (0.33, 1.76)
Exercise        
  What is one possible reason people are obese? 30 64* 1.90 (0.81, 4.45)
  Exercise is good for… 36 64* 3.12 (1.34, 7.22)
  All of these are reasons why exercise is good EXCEPT 64 83* 2.76 (1.05, 7.26)
  Exercise can make your body… 91 94 1.36 (0.29, 6.46)
aOdds ratio comparing the odds of answering correctly between pre-test 2 and post-test 1 at 6 months after the 1st-round intervention.
*indicates p<0.05 comparing pre-test 2 and post-test 1 by Student t-test.
Table 4a: Percentage of students correctly answered questions at 6 months post-1st intervention: retention after 1st intervention.