Indigenous populations for each country: Australia - Aboriginal and Torres Strait Islanders (2018-2019), USA – American Indian and Alaskan Native (2022), Canada - Aboriginal (First Nations, Inuit, Metis) (2022), New Zealand - Māori (2022-2023). Smokers are defined as persons who smoke daily, at least once a week, and less than weekly, except for Canadian smokers defined as smoking in the past 30 days.