Ripoll 2012.

Trial name or title	Clinical trial on the efficacy of exhaled carbon monoxide measurement in smoking cessation in primary health care
Methods	Parallel randomised controlled trial with blind evaluation (single)
Participants	942 participants Inclusion criteria: Smokers >= 18 years of age attended for any reason Smokers in contemplation or pre‐contemplation phase
Interventions	Intervention group: brief advice plus exhaled CO measure Control group: brief face‐to‐face antismoking advice from the physician during patient consultation
Outcomes	Sustained abstinence (at 6 and 12 months) validated by urine cotinine test
Starting date	15 October 2010 (end date 15 October 2012)
Contact information	Miss Joana Ripoll jripoll@ibsalut.caib.es
Notes	Study no longer recruiting, no data published. Author contacted but no answer received.

CO: carbon monoxide

COPD: chronic obstructive pulmonary disease

EEG: electroencephalogram

NNAL: 4‐(methylnitrosamino)‐1‐(3‐pyridyl)‐1‐butanol

NRT: nicotine replacement therapy