An interventional study of Libre del Cigarrillo Smartphone App and Libre del Cigarrillo Printed Booklets in Smoking Cessation, sponsored by H. Lee Moffitt Cancer Center and Research Institute. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-15.
Sponsored by H. Lee Moffitt Cancer Center and Research Institute · Not applicable, Interventional, and Prevention
Pilot randomized controlled trial evaluating feasibility, acceptability, and trial-readiness of the new app compared with the existing print booklets and the NCI SmokefreeTXT en Español program.
1,581 studies on the registry are indexed under Smoking Cessation; 198 are open to participants now.
This study's planned enrollment of 120 is below the median of 164 across 1,423 interventional studies indexed under Smoking Cessation.
Browse Smoking Cessation studies →H. Lee Moffitt Cancer Center and Research Institute is the lead sponsor of 540 studies on the registry; 75 are open to participants now.
Of its 99 completed or terminated interventional studies of FDA-regulated products, 57 (58%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Participants receive access to the finalized Libre del Cigarrillo smoking-cessation app.
Behavioral: Libre del Cigarrillo Smartphone App
Participants receive the culturally tailored Libre del Cigarrillo printed self-help booklets.
Behavioral: Libre del Cigarrillo Printed Booklets
Participants receive NCI's automated Spanish-language SmokefreeTXT text-messaging cessation program.
Behavioral: SmokefreeTXT en Español
Participants receive full access to the culturally adapted cessation app.
The validated Spanish-language booklet series previously shown to increase long-term abstinence.
NCI Text-Messaging Program
Usability - System Usability Scale
Participants' perceptions of the app's usability in the app arm will be measured using 10 items on a 5-point Likert Scale. Scores range from 0 to 100, with higher scores indicating better usability.
Time frame: Up to 18 Months
Acceptability - Client Satisfaction Questionnaire (CSQ)
Participants' satisfaction with the LDC app will be measured using the Client Satisfaction Questionnaire (CSQ). The questionnaire consists of 8 items rated on a 4-point Likert scale, with higher scores indicating greater overall satisfaction.
Time frame: Up to 18 Months
Feasibility - Screening Rate
Number of potential participants screened to participate in the study.
Time frame: Up to 18 Months
Feasibility - Enrollment Rate
Number of screened eligible participants who enroll in the study.
Time frame: Up to 18 Months
Feasibility - Baseline Assessment Completion
Number of enrolled participants who complete all baseline questionnaires.
Time frame: Baseline
Feasibility - Retention at 18 Months
Number of participants in each of the arms that completed the 18-month follow-up assessment.
Time frame: Up to 18 months
Feasibility - Biochemical Verification
Number of participants self-reporting abstinence who returned saliva samples for cotinine verification.
Time frame: Up to 18 months
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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H. Lee Moffitt Cancer Center and Research Institute →