The relationship between ashtrays and signage within venues (n = 151) and adherence to a smoke-free legislation, within Waves 3 and 4 of the Hellenic Air Monitoring Study Greece, 2010–2011.

Abbreviations: Adj. Beta = Adjusted Beta coefficient; St. Error = Standard error; n = number of sampled sites. 1Adjusted for venue type and city in a mixed effects linear model accounting for repeated measures in Waves 3 and 4. 2Includes both factory made receptacles as well as improvised ashtray equivalents. 3Refers to presence of any signage either outdoors or indoors against smoking (signs on doors, walls, bar tops and table tops against smoking).