Ringing a Bell on the Final Day of Radiation Therapy in Improving the Memory of Distress in Cancer Patients

October 2, 2025 updated by: University of Southern California

Are Last Impressions Lasting Impressions? Intervention of Ringing a Bell at the End of Cancer Treatment

This clinical trial studies how well ringing a bell on the final day of radiation therapy works in improving the memory of distress in cancer patients. Ringing a bell on the final day of radiation therapy may improve the memory of how painful the treatment was.

Study Overview

Detailed Description

PRIMARY OBJECTIVES:

I. To determine if the simple act of ringing a bell at the end of radiotherapy can improve the retrospective evaluation of distress due to radiotherapy and other prior cancer therapy.

SECONDARY OBJECTIVES:

I. To measure the severity of patients' memory of distress from cancer treatment.

II. To assess the relationship between anxiety to actual distress and to remembered distress.

III. To assess the relationship between optimism-pessimism personality to actual distress and to remembered distress.

IV. To assess patient's cognitive dissonance reduction to actual distress and to remembered distress.

OUTLINE: Patients are assigned to 1 of 2 groups.

GROUP A (No bell ringing): Patients undergo standard of care radiation therapy with or without chemotherapy.

GROUP B (Bell ringing): On the final day of standard of care radiation therapy, patients ring a bell in the clinic.

After completion of study, patients are followed up for 7 months.

Study Type

Interventional

Enrollment (Actual)

82

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • California
      • Los Angeles, California, United States, 90033
        • USC / Norris Comprehensive Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosis of cancer
  • Definitive radiation treatment with or without concurrent chemotherapy with curative intent; treatment prior to radiation therapy is acceptable (e.g. surgery, chemotherapy)
  • Ability to understand and the willingness to sign a written informed consent; consents will be provided in English or Spanish
  • Able to speak English or Spanish (questionnaires will be in English and Spanish)

Exclusion Criteria:

  • Patients with either a malignant central nervous system (CNS)-primary cancer or with brain metastases; patients do not need to undergo brain imaging unless indicated per standard workup and management (e.g. advanced stage lung cancer receiving definitive therapy)
  • Patients who will be receiving surgery or adjuvant chemotherapy within 1 month following radiation treatment
  • Patients with widespread metastatic disease (> 3 distant metastases); patients with oligometastatic disease (=< 3 distant metastases) are allowed only if they are receiving definitive (curative) radiation therapy (RT) with or without chemotherapy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Group A (no bell after final radiation)
Patients undergo standard of care radiation therapy with or without chemotherapy.
Ancillary studies
Experimental: Group B (ring bell after final radiation treatment)
On the final day of standard of care radiation therapy, patients ring a bell in the clinic.
Ancillary studies
Ring bell after final radiation treatment

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Distress memory scales as assessed by the 11-point Numeric Rating Scale
Time Frame: Up to 7 months
Patient baseline characteristics and treatment will be summarized in groups A and B. Repeated measures analysis of variance (ANOVA) will be used to compare distress memory scales between patients in group A and group B. A mixed regression model will be used to examine the effect of ringing the bell on the last day of radiotherapy on distress memory scales when considering covariates such as baseline patient characteristics, cancer type, radiotherapy total dose and duration, baseline distress scale, analgesic medication, disease recurrence status, optimism/pessimism personality and anxiety.
Up to 7 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Anxiety level as assessed by Generalized Anxiety Disorder 7 scale
Time Frame: Up to 7 months
Repeated measures ANOVA will be used to compare anxiety levels between patients in group A and group B. All p values will be two-sided at a significance level of 0.05.
Up to 7 months
Optimism-pessimism scores as assessed by the Life Orientation Test-Revised
Time Frame: Up to 7 months
Repeated measures ANOVA will be used to compare optimisim-pessimism scores between patients in group A and group B. All p values will be two-sided at a significance level of 0.05.
Up to 7 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Patrick Williams, University of Southern California

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 15, 2016

Primary Completion (Actual)

November 15, 2018

Study Completion (Actual)

November 15, 2018

Study Registration Dates

First Submitted

November 15, 2016

First Submitted That Met QC Criteria

November 18, 2016

First Posted (Estimated)

November 22, 2016

Study Record Updates

Last Update Posted (Estimated)

October 7, 2025

Last Update Submitted That Met QC Criteria

October 2, 2025

Last Verified

April 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • OS-15-15 (Other Identifier: USC / Norris Comprehensive Cancer Center)
  • P30CA014089 (U.S. NIH Grant/Contract)
  • NCI-2016-01259 (Registry Identifier: CTRP (Clinical Trial Reporting Program))

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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