The MyLungHealth Study Protocol: Engaging Patients to Enable Interoperable Lung Cancer Decision Support at Scale

Inclusion criteria for both study 1 and study 2: * aged 50-79 * a history of smoking (e.g., current or former tobacco use) * seen in a study primary care clinic in the 12 months preceding the start of the trial Exclusion criteria for both study 1 and study 2: * \>0 but \< 10 pack-year smoking history or quit more than 15 years ago * No use of the patient portal at least once in the year preceding the start of the study * A lung cancer diagnosis at the start of the study * LDCT completed in the past 3 years * Another chest CT completed in the past year * Structured EHR data indicating LCS SDM was provided in the past 3 years * Exposed to the intervention during the pilot phase * No visit at a study clinic during the trial period when the intervention was available Inclusion criteria for study 1: * a 10-19 pack-year smoking history, an unknown pack-year history, unknown quit date for patients who quit smoking, or a 0 pack-year smoking history Inclusion criteria for study 2: * at least a 20 pack-year smoking history and are a current smoker or have quit within the last 15 years