Text Messaging to Improve Adherence to Oral Chemotherapy Agents

2015-04-21 13:38:23 | BioPortfolio


The purpose of this Academic Research Enhancement Award proposal is to conduct a small-scale health-related research project on text messages to improve adherence to oral chemotherapy agents. Michigan State University College of Nursing has not been a major recipient of National Institute of Health grant funding. As a result, the overall objective of this proposal is to strengthen the research environment in the College of Nursing so that it can develop into a significant health-related scientific research enterprise. This project would involve undergraduate and graduate students, and thus, generate student interest in research as a career. The importance of the research planned for this proposal is as follows. More than 50 oral chemotherapy agents in pill form are currently on the market, with projections that in 3 years, 25% of cancer treatments will be delivered in pill form. For oral agents to achieve a therapeutically effective level for cancer treatment, patients must strictly adhere to the regimen. Adherence to oral cancer agents is often less than 80%, which may be inadequate for treating the cancer. To date, empirical research in the area of improving adherence to oral agents is underdeveloped. The goal of this research is to improve adherence to oral chemotherapy agents through a technology based strategy, tailored SMS text messages. This prospective randomized controlled trial will examine the feasibility, acceptability, and satisfaction with a 3-week tailored text message intervention for oral agent adherence. Descriptive statistics, generalized linear modeling, and generalized estimating equations will be used for analysis. In this proposal, preliminary data will be collected to examine efficacy of the text message intervention to promote adherence to oral agents. Data will then be used to further inform the development of an intervention to improve adherence to oral agents for an R01 application to conduct a larger randomized trial to test this innovative intervention. This study can have a transformative impact on oral agent adherence by developing a technology-based strategy to promote adherence among the increasing number of cancer patients who receive their cancer treatment in pill form. This type of novel intervention also has the potential to transform and impact many other ill populations that require adherence to a medication regimen.


The therapeutic outcome of cancer treatment for patients taking oral chemotherapy agents depends heavily on adherence to the oral agent regimen. Yet recent research indicated that patients miss one-third of oral chemotherapy agent doses. With more than 50 oral anti-cancer agents on the market, it is projected that within 3 years, 25% of cancer treatment will be delivered in pill form. In this new treatment paradigm, care is moved from the clinics to home settings. This means that patients are seen less frequently by oncologists and greater responsibility is placed on the patients. Complicating this further, 75% of those with cancer also have comorbid conditions that require them to perform other self-care management (SCM) responsibilities. In addition, many have low self-efficacy, which may interfere with their ability to adhere to the oral agent. The therapeutic outcome for patients taking oral agents depends heavily on engaging patients to adhere to the regimen. Thus, a critical need exists to test novel interventions that promote adherence in patients taking oral chemotherapy agents.

The long-term goal of this research is to develop novel interventions to improve bio-behavioral outcomes of patients with cancer who have treatment in pill form. The objective of this study is to determine the feasibility, acceptability, satisfaction and efficacy of a short message service (SMS) text message intervention to promote adherence among cancer patients prescribed oral agents. The strategy to achieve this objective is to examine how technology can be used to improve adherence and to explore translation of these technologies to the clinical setting by deploying the following research plan.

This 10-week, 2-group, prospective randomized controlled trial will enroll 75 patients (50 in the intervention group and 25 in the control group), from 2 cancer centers, to test the feasibility and efficacy of a tailored intervention using text messages delivered to patient's cell phones to promote oral agent adherence. As these patients are newly prescribed an oral agent, they will be randomly assigned to either the intervention or the control group. At baseline (week 1), we will assess age, sex, race, cancer type and stage, self-efficacy, comorbid conditions and their SCM, and symptoms. For 21 days (week 2-4) the intervention group will receive a tailored text message for oral agent adherence plus usual care and the control group will receive only usual care. Each week (week 2-9) and at exit (week 10) an assessment of oral agent adherence and symptoms will occur. Satisfaction with the intervention will also be evaluated during the exit interview.

Specific Aims

Aim #1. To determine feasibility, defined as patient acceptance, retention in the study, and satisfaction, of a tailored text message intervention among patients who are on oral agents. Hypotheses to be tested are:

Hypothesis 1a: 80% of participants recruited will enroll in the study.

Hypothesis 1b: 80% of patients in the intervention group will complete 21 days of tailored text messages.

Hypothesis 1c: 90% of the intervention group will be satisfied with the tailored text messages.

Aim #2. To determine preliminary efficacy of the tailored text message intervention on adherence to oral agents. Hypotheses to be tested are:

Hypothesis 2a: The intervention group will have significantly higher rates of oral agent adherence than the control group.

Hypothesis 2b: There will be a large effect size of the intervention for group differences in adherence rates.

Exploratory aim: To explore the effect of oral agent complexity, low self-efficacy, symptom severity, comorbid conditions, and SCM of comorbid conditions on adherence to oral agents. We expect that adherence will be greater for patients with higher self-efficacy, simple oral agents, for those with fewer comorbid conditions, for those with fewer SCM responsibilities for their comorbid conditions, and for those with lower symptom severity.

This study can have a transformative impact on oral agent adherence by developing an easy-to-use, technology-based intervention to promote adherence among the increasing number of cancer patients whom receive treatment in this manner.

The significance of this study is that it targets a difficult clinical problem among patients who are very sick with a life threatening disease and must adhere to complex treatment protocols. This innovative intervention involves a readily available technology that can be used to interact with patients on a regular, consistent basis that would otherwise not be possible, feasible, or cost effective if done in a one-by-one interaction with a health care provider. The number of cancer patients who receive chemotherapy in pill form is increasing and this intervention will enable them to adhere and complete their cancer treatment. Thus, the intervention has high generalizability and the potential to transform care.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Health Services Research




Intervention group - texts


Yale University
New Haven
United States


Active, not recruiting


Michigan State University

Results (where available)

View Results


Published on BioPortfolio: 2015-04-21T13:38:23-0400

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Medical and Biotech [MESH] Definitions

A study in which observations are made before and after an intervention, both in a group that receives the intervention and in a control group that does not.

A study that compares a group of participants receiving an intervention with a similar group from the past who did not.

Works consisting of sequenced self-correction texts.

A study that uses observations at multiple time points before and after an intervention (the "interruption"), in an attempt to detect whether the intervention has had an effect significantly greater than any underlying trend over time.

A cancer registry mandated under the National Cancer Act of 1971 to operate and maintain a population-based cancer reporting system, reporting periodically estimates of cancer incidence and mortality in the United States. The Surveillance, Epidemiology, and End Results (SEER) Program is a continuing project of the National Cancer Institute of the National Institutes of Health. Among its goals, in addition to assembling and reporting cancer statistics, are the monitoring of annual cancer incident trends and the promoting of studies designed to identify factors amenable to cancer control interventions. (From National Cancer Institute, NIH Publication No. 91-3074, October 1990)

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