The effects of smoking status and ventilation upon environmental tobacco smoke concentrations in UK public houses and bars

Sixty pubs were investigated in the UK to measure environmental tobacco smoke (ETS) concentrations in smoking and non-smoking areas. The ETS sampling equipment is described. A statistical exploitation of the results shows that the status of the zone has a big influence on its ETS level: ETS concentration in smoking areas is higher than in non-smoking areas, but ETS exposures are significant in the non-smoking parts. Results also show that the effect of the ventilation system on the ETS concentration is not significant in such pubs.