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Table 3 Multivariable-Adjusted Changes (95% CI) in Calorie Underestimation and Noticing of Menu Calorie Information by Adults, Adolescents, and Children After Calorie Labeling in McDonald’s Restaurants Compared to Other Fast-Food Restaurants

From: Evaluation of the impact of calorie labeling on McDonald’s restaurant menus: a natural experiment

 

Underestimated Calories Purchased

McDonald’s

Other Chains

Difference-in-differencesa

Pre

Post

Change (crude)

Change (adjusted)a

Pre

Post

Change (crude)

Change (adjusted)a

Adults

63%

64%

1% (−6, 8%)

1% (− 6, 8%)

69%

68%

0% (−5, 4%)

−1% (− 5, 4%)

1% (− 7, 9%)

Adolescentsb,c

78%

71%

−6% (− 12, 0%)

−5% (− 12, 1%)

76%

71%

− 5% (− 10, − 1%)

− 5% (− 10, − 1%)

−1% (−9, 8%)

Childrenc

68%

67%

−1% (− 17, 14%)

1% (− 16, 17%)

70%

69%

0% (− 14, 13%)

−2% (− 17, 12%)

3% (−18, 24%)

 

Noticed Calorie Information

McDonald’s

Other Chains

Difference-in-differencesa

Pre

Post

Change (crude)

Change (adjusted)a

Pre

Post

Change (crude)

Change (adjusted)a

Adults

15%

45%

30% (24, 36%)

30% (24, 37%)

25%

26%

2% (−2, 6%)

2% (−2, 6%)

28% (21, 36%)

Adolescentsb,c

11%

38%

27% (21, 32%)

26% (20, 32%)

18%

19%

1% (− 4, 5%)

1% (−3, 5%)

25% (18, 32%)

Childrenc

14%

36%

21% (7, 35%)

22% (7, 37%)

18%

25%

7% (−3, 18%)

9% (−2, 21%)

13% (− 7, 31%)

  1. aChanges in the predicted probability of the outcome of interest are adjusted for age (years, continuous), sex (female [ref], male), race/ethnicity (white [ref], black, Asian, Hispanic, other), BMI (kg/m2, continuous), city (Boston [ref], Hartford, Providence, Springfield), and restaurant chain (Burger King [ref], KFC, Subway, Wendy’s). Restaurant location was included as a random effect
  2. bControl restaurants included Burger King (ref), Wendy’s, Subway, and Dunkin’ Donuts
  3. cAdjusted for BMI-for-age-and-sex z score (continuous) instead of BMI