Table 3

Change in slopes of linear regression lines comparing rates of change in menthol and non-menthol smoking prevalence, by time period*

		Slopes		Difference in slopes	p Value for different slopes
Age		Menthol	Non-menthol	(Non-menthol—menthol)	p Value for different slopes
12–17	2004–2010	−0.04	−0.46	−0.42	<0.01
12–17	2010–2014	−0.46	−0.33	0.13	0.08
18–25	2004–2010	0.47	−1.48	−1.94	<0.01
18–25	2010–2014	−0.23	−1.01	−0.79	<0.01
26+	2004–2010	0.04	−0.33	−0.37	<0.01
26+	2010–2014	0.11	−0.50	−0.61	<0.01

*Slopes measure the percentage point change in prevalence per year. Bolded p values indicate statistically significant difference between menthol and non-menthol cigarette smoking during the time period noted (p<0.05).