# Mobile Health Technology for Personalized Tobacco Cessation Support Among Cancer Survivors and Caregivers in Laos (Project SurvLaos): Protocol for a Pilot Randomized Controlled Trial

## TL;DR

This study tests a mobile health app to help cancer survivors and caregivers in Laos quit smoking, aiming to improve health outcomes and reduce tobacco-related risks.

## Contribution

The study introduces a mobile health-based automated treatment program tailored for Lao cancer survivors and caregivers, a population with no existing tobacco cessation programs.

## Key findings

- The trial will assess feasibility through message delivery rates and participant retention.
- Preliminary efficacy will be measured by 7-day point prevalence abstinence at 3 months.
- Qualitative insights will explore factors influencing smoking cessation success or failure.

## Abstract

Tobacco use remains a major cause of preventable deaths and evidence suggests that smoking cessation offers considerable benefits for patients with and survivors of cancer. In the Lao People’s Democratic Republic (Lao PDR), approximately 60% of male patients and 15% of female patients with cancer smoke cigarettes. Nevertheless, there is no tobacco treatment program for this population.

This pilot randomized controlled trial (RCT) aims to evaluate the feasibility and preliminary efficacy of our mobile health–based automated treatment (AT) program to help Lao cancer survivors and caregivers quit smoking cigarettes.

We used an intervention mixed methods research design, which included a pilot 2-group interventional RCT and an embedded qualitative component to explain RCT outcomes. In the pilot RCT, cancer survivors or caregivers (n=80, no dyads) who smoked were recruited from national hospitals in Vientiane. Recruited participants were randomized to 1 of 2 treatment groups: standard care (SC) or AT. SC consisted of brief advice to quit smoking delivered by research staff, self-help written materials, and a 2-week supply of nicotine replacement therapy (transdermal patches). AT consisted of all SC components plus our fully automated, interactive, smartphone-based behavioral treatment program personalized and tailored to cancer survivors or caregivers and delivered by our Insight app. Feasibility outcomes of interest include the percentages of intervention messages delivered and viewed, and participant retention at the 3-month follow-up. The preliminary efficacy outcome is biochemically confirmed self-reported 7-day point prevalence abstinence at 3 months post study enrollment. During the interventional RCT and after the 3-month follow-up assessment, we used additional open-ended questions to explore why and how the participants did or did not successfully quit smoking and stay abstinent.

Data collection occurred from April 2022 to May 2023. Outcome analyses are ongoing, and results are expected to be published in 2025.

Our course of research will address the critical need of having a scalable and sustainable tobacco cessation treatment program for patients with cancer and their caregivers in Lao PDR. The preliminary data from this pilot project will lay a foundation for a subsequent fully powered RCT to evaluate the actual efficacy of our mobile health–based AT program. Ultimately, our course of research will contribute to reducing tobacco-related complications in cancer treatments, comorbidities, tobacco-related cancer recurrence, and mortality rates in Lao PDR.

ClinicalTrials.gov NCT05253573; https://clinicaltrials.gov/study/NCT05253573

DERR1-10.2196/66517