 The theoretical basis for the smoking cessation program is motivational interviewing MI, an established counselling method previously used in smoking cessation programs as well as in other behaviour change programs. MI is defined as a directive, client-centred counseling style for eliciting behaviour change by helping clients to explore and resolve ambivalence Miller 1983, cited in a Cochrane report by Lindson-Hawley, N et al., 2015. The 2015 Cochrane review concluded that MI may help people to quit smoking, but underlined at the same time that there were huge variations in study quality and intervention implementations. To our knowledge, a MI-based smoking cessation program has to a very limited extent been tried in a hospital setting before. 