Clinical trial on the efficacy of exhaled carbon monoxide measurement plus brief physician's advice for smoking cessation

A randomised controlled trial on the efficacy of exhaled carbon monoxide measurement plus brief physician's advice for smoking cessation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN67499921

Enrollment

942

Registered

2010-07-21

Start date

2010-10-15

Completion date

Unknown

Last updated

2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Smoking cessation Not Applicable

Interventions

Patients will be randomised to either 1. Control Group (CG): Brief face-to-face anti-smoking advice from the physician during patient consultation 2. Intervention Group (IG): Brief advice plus exhale

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Smokers = 18 years attended for any reason 2. Smokers in contemplation or precontemplation phase

Exclusion criteria

Exclusion criteria: 1. Smokers in preparation phase of quitting 2. Patients with terminal illness or in a state of health that prevents understanding of study aims and signed informed consent 3. Pregnant and/or breast-feeding women

Design outcomes

Primary

Measure	Time frame
Sustained abstinence (at 6 and 12 months) validated by urine cotinine test	—

Secondary

Measure	Time frame
1. Prevalence of smoking cessation, self reported and confirmed by both cotinine test 2. Cigarettes reduction 3. Variation in phase of the abandonment of smoking	—

Countries

Spain

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 26, 2026