This is a preprint. It has not yet been peer reviewed by a journal. The National Library of Medicine is running a pilot to include preprints that result from research funded by NIH in PMC and PubMed. medRxiv. Display options Format doi: 10.1101/2023.05.01.23289351. Preprint PMID: 37205342 PMCID: PMC10187338 DOI: 10.1101/2023.05.01.23289351 Item in Clipboard Display options Abstract Introduction: Sales data analyses are increasingly used to guide tobacco regulatory science.