The study investigates effectiveness of different smoking cessation methods and low-dose CT based lung cancer screening

The study population consists of individuals aged 50-74 years with a significant smoking history who continue to smoke. The study design is a prospective and participants are randomized into three study arms: low-dose CT (LDCT) + smoking cessation with a smartphone application (arm 1), LDCT + smoking cessation with written materials (arm 2), smoking cessation with a smartphone application without LDCT (arm 3). The study compares effectiveness of smoking cessation methods, LDCT in lung cancer screening, lung cancer stage distribution, and lung cancer specific survival.

Inclusion Criteria:

1. Able to provide written informed consent
2. Age between 50-74
3. Smoked ≥ 15 cigarettes/day for ≥ 25 years or smoked ≥ 10 cigarettes/day for ≥ 30 years and are active smokers (smoking during the last two weeks)
4. Access to a smartphone (iPhone or Android)

Exclusion Criteria:

1. Current or past melanoma, lung, renal or breast cancer
2. A chest CT examination less than one year before inclusion
3. Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial
4. No access to a smartphone (iPhone or Android)
5. Participant is unwilling or unable to comply with treatment and trial instructions
6. Any condition that study investigators consider an impediment to safe trial participation

De-identified individual participant data underlying the results reported in this article will be shared.

The data will be available beginning 6 months after publication and ending 3 years thereafter.

Data will be shared with qualified researchers who submit a methodologically sound proposal for analyses that align with the original study aims. Proposals should be submitted to the corresponding author. Access will require a data use agreement.