Product | Study city | Average weekly flavoured unit sales | Per cent change in average weekly sales pre-policy period compared with enforcement period | ||
Pre-policy period July 2015–July 2018 (160 weeks) | Effective period July–December 2018 (24 weeks) | Enforcement period January–December 2019 (52 weeks) | |||
All flavoured tobacco products† | San Francisco | 39 350 | 34 960 | 1546 | −96 |
San Jose | 68 859 | 72 594 | 68 244 | −1 | |
San Diego | 75 017 | 74 153 | 67 202 | −10 | |
Menthol cigarettes‡ | San Francisco | 21 634 | 15 984 | 860 | −96 |
San Jose | 42 264 | 40 593 | 37 779 | −11 | |
San Diego | 46 264 | 41 506 | 36 854 | −20 | |
Flavoured cigars | San Francisco | 7806 | 7536 | 332 | −96 |
San Jose | 16 444 | 19 854 | 16 762 | 2 | |
San Diego | 14 759 | 15 870 | 12 896 | −13 | |
Flavoured SLT | San Francisco | 6469 | 5345 | 168 | −97 |
San Jose | 8179 | 7689 | 7938 | −3 | |
San Diego | 11 309 | 11 005 | 11 649 | 3 | |
Flavoured ENDS | San Francisco | 3439 | 5906 | 16 | −100 |
San Jose | 1932 | 4405 | 5706 | 195 | |
San Diego | 2610 | 5692 | 5701 | 118 |
Bold values indicate significance (p<0.05). Stata ‘margins’ were used to estimate the predicted values and ‘contrasts’ were used to test for differences in predicted values.
Models controlled for the US$2 increase in the California cigarette excise tax (April 2017) and for seasonality in all models except ENDS.
*Full regression results for each of these outcomes and study cities are available in online supplemental table 1.
†‘Flavoured’ includes menthol products.
‡Menthol flavours are the only legal flavours for cigarettes in the USA.
ENDS, electronic nicotine delivery systems; SLT, smokeless tobacco.