TABLE 1.

Model-Generated Smoking Prevalences, by Year and by Quit Attempts, Treatment Use, and Treatment Effectiveness Scenarios, 2008–2020

	2008, %	2009, %	2010, %	Change From Status Quo, %	2015, %	Change From Status Quo, %	2020, %	Change From Status Quo, %
Status quo	20.1	19.9	19.6		18.6		17.5
Increase in QAs
By 25%	20.1	19.6	19.2	−2.1	17.7	−4.7	16.5	−5.8
By 50%	20.1	19.4	18.8	−4.2	16.9	−9.2	15.6	−11.1
By 100%	20.1	19.0	18.0	−8.3	15.3	−17.4	13.9	−20.8
Increase in TxUse
By 50%	20.1	19.8	19.4	−0.9	18.2	−2.1	17.1	−2.5
By 100%	20.1	19.7	19.3	−1.9	17.8	−4.1	16.7	−4.8
Increase in QAs and TxUse
By 50% and 50%	20.1	19.3	18.5	−5.6	16.3	−11.9	15.0	−14.3
By 100% and 100%	20.1	18.6	17.3	−11.9	14.1	−23.9	12.6	−27.9
Increase in TxEffa
By 50%	20.1	19.7	19.3	−1.8	17.8	−4.0	16.7	−4.7
By 100%	20.1	19.5	18.9	−3.6	17.1	−7.8	15.9	−9.2
Increase in QAs and TxEff
By 50% and 50%	20.1	19.1	18.3	−6.9	15.9	−14.5	14.5	−17.2
By 100% and 100%	20.1	18.2	16.6	−15.2	13.1	−29.5	11.6	−33.9
Increase in TxUse and TxEff
By 50% and 50%	20.1	19.5	18.9	−3.7	17.1	−7.8	15.9	−9.2
Increase in QAs, TxUse, and TxEff
By 50%, by 50%, and by 50%	20.1	18.8	17.8	−9.6	14.9	−19.5	13.5	−22.8
By 100%, by 100%, and by 100%	20.1	17.0	14.7	−25.1	10.4	−44.1	9.0	−48.9
Increase in QAs, TxUse, and TxEff, with 0% decay rate
By 50%, by 50%, and by 50%	20.1	18.8	17.7	−10.0	14.0	−24.7	11.7	−33.5
By 100%, by 100%, and by 100%	20.1	17.0	14.5	−26.1	8.7	−53.0	6.3	−63.8
Increase in QAs, TxUse, and TxEff with 25% decay rate
By 50%, by 50%, and by 50%	20.1	18.8	17.9	−8.9	15.9	−14.2	14.9	−14.9
By 100%, by 100%, and by 100%	20.1	17.0	15.0	−23.5	12.3	−33.6	11.5	−34.2

Note. QA = quit attempts; TxEff = treatment effectiveness; TxUse = treatment use.

^aSuch as reduced relapse.