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Table 1 Summary statistics

From: Calorie labeling and consumer estimation of calories purchased

  All Philadelphia Baltimore Significance tests
Pre- Post- Pre- Post- Pre- Post- Pre vs. Post
Mean SD Mean SD Mean SD Mean SD Mean SD Philadelphia Baltimore
N 1835   470   534   394   437      
Mean               
Age 39.1 13.9 39.7 14.1 37.4 14.4 40.8 13.5 38.9 13.4    * *
Number of calories purchased, actual 951 685 987 757 927 704 974 696 923 559     
Percent               
Gender               
  Male 55.2 49.8 58.3 49.4 52.1 50.0 51.5 50.0 58.8 49.3 * * *  
  Female 37.4 48.4 37.5 48.5 45.5 49.8 28.9 45.4 35.2 47.8 ** ** **  
  Missing 7.4 26.2 4.3 20.2 2.4 15.4 19.5 39.7 6.0 23.7 *** **   ***
Race/Ethnicity               
  Black 70.1 45.8 60.4 49.0 70.8 45.5 73.9 44.0 76.4 42.5 *** * ***  
  Caucasian 20.8 40.6 23.0 42.1 17.8 38.3 22.1 41.5 21.1 40.8    *  
  Other/Missing 4.1 19.8 6.0 23.7 5.2 22.3 3.3 17.9 1.4 11.7   **   
Education               
  High school or less 60.9 48.8 54.7 49.8 63.3 48.2 62.2 48.6 63.4 48.2 *   **  
  Some college or AA 25.2 43.4 29.8 45.8 23.0 42.1 22.6 41.9 25.2 43.5 *   *  
  BA or above 10.6 30.8 11.7 32.2 8.1 27.2 12.4 33.0 10.8 31.0     
  Missing 3.4 18.1 3.8 19.2 5.6 23.1 2.8 16.5 0.7 8.3   ***   *
Type of order               
  To go 67.6 46.8 60.6 48.9 70.4 45.7 68.0 46.7 71.4 45.2 *   **  
  Eat in 26.3 44.1 25.1 43.4 24.2 42.8 28.4 45.2 28.4 45.1     
  Missing 6.1 23.9 14.3 35.0 5.4 22.7 3.6 18.5 0.2 4.8 *** *** *** ***
Number of times usually eat in big chain fast food restaurant per week          
  ≤1 56.4 49.6 62.3 48.5 64.0 48.0 49.0 50.1 47.1 50.0 *** ***   
  2 15.8 36.4 12.3 32.9 12.7 33.4 17.5 38.1 21.5 41.1 * ***   
  ≥3 34.4 47.5 26.4 44.1 30.7 46.2 39.6 49.0 42.8 49.5 *** ***   
  Missing 3.1 17.4 7.7 26.6 2.4 15.4 1.5 12.3 0.5 6.8 *** * ***  
Number of items purchased               
  1 23.2 42.2 18.5 38.9 25.7 43.7 25.9 43.9 22.7 41.9 **   **  
  2 20.0 40.0 21.5 41.1 18.9 39.2 19.0 39.3 20.4 40.3     
  3 31.6 46.5 31.7 46.6 32.2 46.8 31.0 46.3 31.4 46.4     
  4 11.3 31.7 10.2 30.3 9.2 28.9 12.2 32.8 14.4 35.2   *   
  ≥5 14.0 34.7 18.1 38.5 14.0 34.8 11.9 32.5 11.2 31.6 *    
Purchased combination meal 24.5 43.0 21.5 41.1 25.7 43.7 25.4 43.6 25.6 43.7     
  Restaurant               
  McDonald’s 64.2 48.0 66.2 47.4 70.2 45.8 61.7 48.7 57.0 49.6   ***   
  Burger King 35.8 48.0 33.8 47.4 29.8 45.8 38.3 48.7 43.0 49.6   ***   
  1. ***P < 0.001, **P < 0.01, *P < 0.05.