The Smoking and Alcohol Toolkit Study is an ongoing, monthly, population survey in England. The Toolkit Study consists of cross-sectional household surveys of nationally representative samples of 1,700-1,800 adults in England.20 The study sampling is a hybrid of random probability and simple quota – England is split into more than 170,000 areas stratified according to a geodemographic analysis of the population. Areas are then randomly allocated to interviewers who conduct interviews within that area until the quota is fulfilled.
