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Although popular clinically, the psychometric properties of motivation rulers for tobacco cessation are unknown. This study examined the psychometric properties of rulers assessing importance, readiness, and confidence in tobacco cessation. Methods: This observational study of current smokers was conducted at 10 US emergency departments (EDs). Subjects were assessed during their ED visit (baseline) and reassessed two weeks later. We examined intercorrelations between the rulers as well as theirdoi:10.1186/1940-0640-7-8 pmid:23186265 pmcid:PMC3507634 fatcat:2hv7lnzv6ndkrdhf364bcjym3a