Table 1. Usual intake (kilocalories/capita/day and grams/capita/day) of beverages among adult residents of Berkeley, California, pre- and post-tax.
| Usual intake | Pre-tax (Nov.–Dec. 2014), n = 623 | Post-tax (Nov.–Dec. 2015), n = 613 | Pre-tax–post-tax difference | ||
|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | ||
| Caloric intake (kilocalories/per capita/day) | |||||
| Taxed beverages | 45.1 | 29.4, 60.7 | 38.7 | 23.0, 54.4 | −6.4, p = 0.56 |
| Untaxed beverages | 115.7 | 87.6, 142.5 | 147.6 | 116.3, 178.9 | 31.9*, p = 0.04 |
| Volume of intake (grams/capita/day) | |||||
| Taxed beverages | 121.0 | 78.7, 163.3 | 97.0 | 56.6, 137.4 | −24.0, p = 0.24 |
| Untaxed beverages | 1,839.4 | 1,692.7, 1,986.1 | 1,896.5 | 1,742.3, 2,050.8 | 57.1, p = 0.22 |
Models account for age, gender, race/ethnicity, income level, and educational attainment. n is the sample size at each round of the survey after excluding participants with missing values on self-reported race/ethnicity, age, education, income, or monthly intake of sugar-sweetened beverages.
*Statistically significant difference in mean per capita intake between pre-tax and post-tax values, p < 0.05.
Source: dietary and shopping behavior surveys collected by the Public Health Institute.