2. Characteristics of prison bans.

Study ID	Country	Setting	National Ban and Settings ban
Binswanger 2014	USA	Prisons	National: Enactment varied by state/ordinance. Since 1993 US Supreme Court ruling that suggested exposure of prisoners to environmental tobacco smoke considered "cruel and unusual punishment" in violation of 8th Amendment. Settings: Either smoke‐free (indoor ban), comprehensive (indoor and outdoor), or tobacco‐free policy.
Dickert 2015,	USA, New Jersey	Prisons	National ban: New Jersey’s Smoke‐Free Air Act prohibits smoking in enclosed indoor spaces (2006). March 2010, an amendment banned the use of electronic smoking devices in indoor public places and workplaces and the sale to people 19 years and younger. Settings: NJDOC policy decision for tobacco‐free prisons, including grounds 2012. 13th Feb 2013 policy to ban sales and use of all tobacco products for employees, visitors and prisoners enacted.
Etter 2012	Switzerland	Prison	No national ban. Settings: In prison A, the SHS intervention consisted of an extension of smoke‐free zones and in 2009 smoking allowed everywhere except some indoor workplaces. From 2010 smoking only allowed in cells and outdoors. In prisons B and C in 2009, prisoners were allowed to smoke only in cells, during their outdoor exercise, and in 1 smoking room in prison C. Rules were loosely enforced and respected. There was no policy change regarding SHS in prison B. In prison C, the SHS intervention was limited to better enforcement of the smoking ban in the waiting rooms of the medical service. No cessation programmes in Prison A, inmates charged for NRT, prisons B and C in 2010/2011 medical staff trained to provide smoking cessation counselling and provide NRT. NRT was free in Prison C only. Smoking cessation booklets distributed to all prisons.

NJDOC: New Jersey Department of Corrections
 SHS: secondhand smoke