We use PMI Financials or estimates, IQOS user panels and PMI Market Research. The number of total users we report refers to IQOS users for whom PMI HeatSticks represent at least 5% of their daily tobacco consumption over the past 7 days, while the number of people we estimate have completely quit cigarette smoking refers to IQOS users who have completely quit cigarettes and for whom PMI HeatSticks represent at least 70% of their past 7-day heated tobacco consumption.