“…In 2009, the North American Quitline Consortium (NAQC) estimated that, with promotions and sufficient funding, quitlines could potentially reach 16% of smokers annually [7]. From the early 2000s through to 2015, the annual reach for state quitlines in the United States averaged between 1% and 2% of all smokers, nationally [2,3,6,8,9,10,11,12,13,14,15]. Data from previous studies and from CDC’s National Quitline Data Warehouse (NQDW) indicate that the annual state-level quitline reach ranges from less than 0.1% to around 4.0% [14,15].…”