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Table 2 Relative measures of students’ overall beverage consumption associated with state soda ban* and school SSB vending machine access,† based on zero-inflated negative binomial model‡

From: The association between state bans on soda only and adolescent substitution with other sugar-sweetened beverages: a cross-sectional study

  Soda allowed in school Soda banned in school
  Vending machineδ No vending machine Vending machine No vending machine
Beverage β 95% CI p β 95% CI p β 95% CI p β 95% CI p
Diet soda             
Logistic - - - 0.00 -0.22, 0.23 .97 0.15 -0.18, 0.48 .37 0.13 -0.19, 0.44 .43
Negative binomial - - - 0.34 0.00, 0.68 .05 0.12 -0.08, 0.32 .24 0.10 -0.15, 0.36 .43
Sports drinks             
Logistic - - - 0.21 -0.11, 0.52 .19 0.09 -0.29, 0.47 .63 -0.14 -0.52, 0.25 .48
Negative binomial - - - 0.19 0.01, 0.37 .04 0.23 0.10, 0.35 .001 0.17 -0.02, 0.37 .08
Energy drinks             
Logistic - - - -0.07 -0.38, 0.23 .64 0.00 -0.21, 0.22 .98 -0.12 -0.67, 0.42 .65
Negative binomial - - - 0.28 0.03, 0.53 .03 0.25 0.02, 0.47 .03 0.07 -0.27, 0.41 .70
Coffee/tea             
Logistic - - - 0.06 -0.26, 0.39 .70 -0.03 -0.35, 0.28 .83 -0.29 -0.78, 0.20 .24
Negative binomial - - - 0.24 0.02, 0.45 .03 0.16 0.01, 0.31 .03 0.14 -0.06, 0.33 .16
Other SSB             
Logistic - - - -0.11 -1.64, 1.42 .89 0.00 -0.97, 0.98 .99 -0.81 -2.51, 0.90 .35
Negative binomial - - - 0.11 -0.07, 0.29 .24 0.16 0.00, 0.32 .05 0.14 0.01, 0.27 .03
  1. * State law bans the sale of soda in vending machines, school stores, and cafeterias (a la carte)
  2. Vending machine that sells “soda or pop, sports drinks, or fruit drinks that are not 100% juice, such as Coke, Gatorade, or Sunny Delight”
  3. Adjusted for race/ethnicity, sex, grade, state median income, Census region, and home food access (negative binomial portion) and race/ethnicity, sex, grade, and home food access (logistic portion)
  4. δ Reference group
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