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. 2016 May 27;2016(5):CD011856. doi: 10.1002/14651858.CD011856.pub2

Martínez 2014.

Methods Country: Spain
Setting: Hospital, Cancer centre
Design: Uncontrolled before‐and‐after study
Analysis: Logistic regression to compare differences in the odds of smoking after the laws took effect
Participants 6 cross‐sectional surveys from 2001 to 2012
Employees of oncology centre surveyed
 Total: n = 1263
 Baseline: n = 580
 After 1st law (2006 ‐ 2009): n = 462
 After 2nd law (2012): n = 221
 Female:male ratio remained stable at 75:25; however, the proportion of staff ≥ 35 years increased during study period. The professional status distribution also changed, with nurses accounting for 44.9% at baseline and 34.9% after extension of ban
Interventions Smoke‐free centre policy was progressively introduced. Tobacco control programme (2000 ‐ 2012)
 National Ban 2005 (indoor smoking)
 National Ban 2011 (outdoor smoking)
Outcomes Attitudes to active and passive smoking
Attitude to tobacco policies and restrictions
Tobacco consumption and smoking status, quit attempts
Staff compliance with policy
Notes National Ban: Yes, 2005. Enacted 2006
2006 ‐ 2010, Spain had a partial ban on smoking in public places. Offices, schools, hospitals and public transportation were smoke‐free, but restaurants and bars could create a "smokers' section" or allow smoking if they were small (under 100 m²). Extension of ban January 2011 restricted smoking in every indoor public place, including restaurants, bars and cafes. Hotels may designate up to 30% of rooms for smoking; mental hospitals, jails and old people's residences may have public rooms where workers cannot enter. Outdoor smoking is also prohibited at childcare facilities, in children's parks and around schools and hospital grounds
Biochemical Verification: No, self‐reported smoking status
Follow‐up period: 1 year after full ban and 5 years after partial ban
Face‐to‐face interviews by trained interviewers. Questionnaire developed European Network of smoke free hospitals
Current tobacco consumption status as smokers either daily (at least 1 cigarette/day) or occasional smokers, former smokers, and never‐smokers as < 1 cig/day, former smokers (not smoking for ≥ 6 months)], and never‐smokers. Among daily smokers, tobacco dependence was evaluated in terms of the number of cigarettes per day (< 10, 10 – 20, and > 20) and the time to the first cigarette after waking up (≤ 30 and > 30 minutes)
Studies all completed April to June periods
Sample size calculation to account for smoking prevalence in health professionals in Catalonia
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) High risk Not applicable
Allocation concealment (selection bias) High risk Not applicable
Sampling bias (selection bias) Unclear risk Random sample of workers based on age and sex drawn from HR department updated files
Blinding of participants and personnel (performance bias) 
 All outcomes High risk None
Blinding of outcome assessment (detection bias) 
 All outcomes Unclear risk Self‐reported smoking status
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Expected outcomes reported
Selective reporting (reporting bias) Unclear risk Expected outcomes reported
Other bias Unclear risk Cancer centre and smoking reduction could be higher
No biochemical measures of smoking status
SHS exposure unknown
No control