Table 6.

Effects of traditional cigarette and e-cigarette tax rates on smoking and vaping outcomes among adults using a two-way fixed effects model among women: Combined BRFSS and NHIS data, 2011–2018

Outcome:	Current traditional cigarette use	Daily traditional cigarette use	Current e-cigarette use	Daily e-cigarette use	Current dual use	Current any use
Traditional cigarette tax rate	−0.0031 [−0.0074,0.0013]	−0.0077*** [−0.0119,−0.0036]	0.0002 [−0.0045,0.0048]	0.0015* [−0.0002,0.0033]	0.0011 [−0.0031,0.0053]	−0.0032 [−0.0117,0.0053]
E-cigarette tax rate	0.0004 [−0.0075,0.0083]	0.0064* [−0.0006,0.0135]	−0.0023 [−0.0115,0.0068]	−0.0038** [−0.0077,−0.00001	−0.0027 [−0.0106,0.0052]	−0.0009 [−0.0143,0.0124]
Observations	2,173,324	2,171,782	710,064	709,875	706,693	706,693
Proportion of outcome variable	0.144	0.104	0.029	0.009	0.017	0.149
Number of clusters	50	50	50	50	50	50

Notes: BRFSS = Behavioral Risk Factor Surveillance System. NHIS = National Health Interview Survey. Each column presents partial results from a single regression model. The unit of observation is an individual in a county in a year. Data are weighted to make the number of observations for each state, year, gender, race/ethnicity, and five-year age band cohort be proportionate to its national population share. Models are estimated with a linear probability model and control for locality-level and individual-level variables reported in Table 1, county fixed effects, and quarter-by-year fixed effects. 95% confidence intervals account for within-state correlations and are reported in square brackets.

^***= statistically different from zero at the 1% level

^**= statistically different from zero at the 5% level

^*= statistically different from zero at the 10% level