Table 1.

Linear regression model of taxed sales as a function of cigarette price, Tobacco Control Program expenditures, and time, California compared with the rest of the nation, 1960 to 2002

Parameter estimate (95% confidence limits)P
Intercept223.1 (213.8 to 232.4)<0.001
Price/pack, 2000 $−12.5 (−18.1 to −6.9)<0.001
Program expenditure per adult, 2000 $−4.5 (−8.0 to −1.1)0.01
Indicator for California, 1960 offset21.1 (14.5 to 27.7)<0.001
Time (y)−1.6 (−1.8 to −1.4)<0.001
California-specific time trend (y)−1.7 (−2.0 to −1.4)<0.001