Table 2. Association Between Changes in Sugar-Sweetened Beverage (SSB) Prices and Weight-Related Outcomes Among Urban Adolescentsa.
| Outcome | BMI (pct) | At risk for OWOB (≥75th pct) | OWOB (≥85th pct) |
|---|---|---|---|
| All individuals (N = 12 654) | |||
| Log(price of soda)t-1 (95% CI) | −0.03 (−0.55 to 0.49) | −0.46 (−1.46 to 0.55) | −0.09 (−0.91 to 0.72) |
| Log(price of soda)t-2 (95% CI) | −0.14 (−0.46 to 0.19) | −0.66 (−1.34 to 0.01) | −0.75 (−1.44 to −0.06)b |
| Girls (n = 6850) | |||
| Log(price of soda)t-1 (95% CI) | −0.08 (−0.69 to 0.54) | −0.20 (−1.38 to 0.99) | 0.54 (−0.34 to 1.42) |
| Log(price of soda)t-2 (95% CI) | −0.45 (−0.94 to 0.04) | −1.27 (−2.19 to −0.36)c | −1.26 (−2.14 to −0.38)c |
| Boys (n = 5804) | |||
| Log(price of soda)t-1 (95% CI) | 0.13 (−0.55 to 0.80) | −0.66 (−2.10 to 0.78) | −0.74 (−1.82 to 0.34) |
| Log(price of soda)t-2 (95% CI) | 0.24 (−0.38 to 0.86) | 0.08 (−0.84 to 1.00) | −0.13 (−1.11 to 0.85) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); OWOB, overweight or obesity; pct, percentile.
a
Control variables include categories for the number of individual visits to a clinic in a year; indicator variables if the individual was diagnosed with endocrine or digestive diseases in a year; and individual, age, and year fixed effects. Confidence intervals calculated using cluster robust standard errors at the city level. All coefficients are multiplied by 10 to interpret their magnitude in terms of the mean soda price increase observed across cities following the SSB tax, which was 10%. Total observations: 63 270 (all), 34 250 (girls), and 29 020 (boys).
b
P<.05.
c
P<.01.