Table 3. Association Between Changes in Sugar-Sweetened Beverage (SSB) Prices and Body Mass Index (BMI) Percentile by Weight Status Prior to 2014 SSB Taxa.
| Outcome: BMI percentile | All | Girls | Boys |
|---|---|---|---|
| Not at risk for OWOB pretax | |||
| Log(price of soda)t-1 (95% CI) | 0.14 (−0.61 to 0.89) | −0.17 (−1.11 to 0.77) | 0.64 (−0.39 to 1.68) |
| Log(price of soda)t-2 (95% CI) | −0.04 (−0.60 to 0.52) | −0.28 (−1.11 to 0.54) | 0.24 (−0.86 to 1.34) |
| Mean BMI percentile | 0.43 | 0.43 | 0.44 |
| Unique patients | 5543 | 3180 | 2363 |
| At risk for OWOB pretax | |||
| Log(price of soda)t-1 (95% CI) | −0.02 (−0.50 to 0.46) | 0.12 (−0.53 to 0.77) | −0.11 (−0.75 to 0.54) |
| Log(price of soda)t-2 (95% CI) | −0.18 (−0.47 to 0.10) | −0.60 (−1.08 to −0.11)b | 0.28 (−0.16 to 0.71) |
| Mean BMI percentile | 0.89 | 0.88 | 0.90 |
| Unique patients | 7111 | 3670 | 3441 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); OWOB, overweight or obesity.
a
Models show coefficients of regressions that include the regressors of interest; individual, year, and age fixed effects; and other controls, including categories for the number of individual visits to a clinic in a year and indicator variables if the individual was diagnosed with an endocrine or digestive disease in that year. Confidence intervals calculated using cluster robust standard errors at the city level. Sample includes a balanced panel of individuals from 2012 to 2017, observed at least once per year and up to 10 times per year for an urban adolescent cohort born between 1999 and 2002.
b
P < .05.