Smoking among hospitalized patients: A multi-hospital cross-sectional study of a widely neglected problem.

Introduction: A comprehensive smoking ban was recently enacted for acute-care hospital campuses in Spain. The aim of this study was to assess the prevalence and patterns of smoking among inpatients before and during hospitalization.

Methods: Multi-center cross-sectional study was conducted in 13 hospitals in the province of Barcelona, Spain from May 2014 to May 2015.