Literacy-Adapted Psychosocial Treatments for Chronic Pain — “Learning About Mastering/My Pain”

Overview

Chronic pain is a significant public health problem that affects over 116 million Americans, costs $600 billion annually, and is unequally borne by people in low-income brackets, especially ethnic minorities. Many individuals also have health literacy deficits (difficulty understanding their illness and difficulty navigating the health care system for treatment) putting them at a greater disadvantage. Treatment usually relies on expensive medical interventions that often have negative side-effects. Psychosocial treatments, like Pain Education and Cognitive-Behavioral Therapy (CBT), show promise, but are usually unavailable. Clinicians are poorly equipped to provide psychosocial treatments to patients with low health literacy. CBT has not been adapted and supported for use in individuals with low health literacy, and even educational materials are often poorly adapted for their needs.

To address this problem, the PI completed a small trial showing benefits from health literacy-adapted pain education and CBT groups for chronic pain in a population with low income and low health literacy. Patients in both treatments reported lower pain by the end of treatment, and the effects were maintained at one year. Patients in the CBT group also reported less depression. The current study uses a larger sample, and directly compares these psychosocial treatments to medical treatment-as-usual to seek better evidence for or against their widespread use in community settings.

Our research questions:

1. In people with chronic pain and low income and/or low literacy, does participating in a health-literacy-adapted psychosocial treatment improve their pain and interference in daily activities due to pain by the end of treatment when compared with a group receiving typical medical care, and are these effects maintained 6 months later?

2. Does participation in the CBT pain management group improve symptoms of depression better than a pain education group by the end of treatment, and are these effects maintained 6 months later?

In partnership with a federally qualified health center, we will enroll 294 patients with chronic pain. Main outcomes will be patient-reported pain intensity, pain interference, depression, and perceived change. From an earlier trial, we expect that our participants will be ~75% female and ~70% African American, and will have low literacy and low income (~60% in the low 15% nationally on word reading, and 90% at or below the poverty threshold).

Full Title of Study: “Reducing Disparities With Literacy-Adapted Psychosocial Treatments for Chronic Pain: A Comparative Trial”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Single (Outcomes Assessor)
  • Study Primary Completion Date: February 2016

Detailed Description

Study Description

Chronic pain is a major public health problem that is compounded by a number of health-related disparities. Low health literacy presents a notable access barrier to effective treatment as it produces cumulative education and communication deficits. Standard care employs biomedical approaches that are expensive, often invasive, and limited in accessibility and long-term effectiveness. Psychosocial treatments are efficacious, yet few psychosocial interventions have adequately addressed the significant health literacy barriers that exclude a substantial portion of disadvantaged individuals from the benefits of treatment.

Research Questions:

1. In individuals with chronic pain and low socioeconomic standing who are receiving care at a federally qualified health center in the Southern US, does participating in a health-literacy-adapted psychosocial treatment group improve their self-reported pain intensity and interference in physical functioning by the end of treatment when compared with a group receiving standard medical care, and are these effects maintained 6 months later?

2. In these same individuals, does participation in the CBT pain management group improve depressive symptoms better than a pain education group by the end of treatment, and are these effects maintained 6 months later? The proposed study will build on researcher experience developing and evaluating psychosocial treatments for chronic pain in individuals with low socioeconomic standing (SES) and on strong partnerships with community health centers to evaluate two innovative, health-literacy-adapted psychosocial interventions for chronic pain. Both interventions integrate patient feedback, expert opinion, and qualitative patient data.

DESIGN

We propose a three-group, community-based randomized, controlled, comparative effectiveness trial. Participants will be patients receiving care from a federally qualified primary care clinic. Patients are expected to be mostly ethnic minority females living below the poverty line with significant unmet need for chronic pain treatment. Patients will be randomly assigned by group to a standard medical treatment control, a pain education group, or a cognitive-behavioral therapy group. Primary outcomes are patient-reported pain intensity, pain interference in physical functioning, and psychological symptoms, all highly relevant to patient-provider decision-making.

Aims:

1. Evaluate the feasibility, acceptability, and comparative effectiveness of health literacy-adapted psychosocial group treatments to a standard-treatment control.

2. Evaluate the comparative effectiveness of treatment groups on depressive symptoms, and evaluate all outcomes for heterogeneity of treatment effects.

STUDY IMPACT

- Systems: Produces a new, low-cost treatment option for community health clinics.

- Providers: Offers options for treatments over and above surgery and medication.

- Patients: Provides information to patients on the benefits of psychosocial treatment on outcomes that matter.

Interventions

  • Behavioral: Pain Ed
    • A 10-week psychosocial group treatment for chronic pain that focuses on providing information about the development, course, and treatment of chronic pain, as well as information about factors associated with reduced pain (e.g., sleep). In particular, it seeks to empower patients to take ownership of their chronic pain care through building deeper knowledge about their pain condition and their interactions with the health care system.
  • Behavioral: CBT for Pain
    • A 10-week psychosocial group treatment for chronic pain that focuses on providing information and skills about the development, course, and treatment of chronic pain, as well as information about factors associated with reduced pain (e.g., sleep). In particular, it seeks to empower patients to self-manage their chronic pain through building deeper knowledge about and better skills for improving their pain condition and their interactions with the health care system.
  • Other: Usual Care
    • A comparison condition in which patients receive standard individualized medical care from the federally qualified health center partnering on this study. Care can include basic biological interventions, such as medication or surgery, as well as supplementary care such as chiropractic or physical therapy. However, cost has a pragmatic influence on the amount of services provided, sought, and received.

Arms, Groups and Cohorts

  • Experimental: Pain Ed
    • Pain Education: A psychosocial treatment group focusing on providing core pain education to low-income patients who may not have received this information due to existing barriers that often includes limited health literacy. This condition also included medical treatment as usual.
  • Experimental: CBT for Pain
    • Cognitive-Behavioral Therapy for Pain: A psychosocial treatment group focusing on providing core pain education and cognitive-behavior skills to low-income patients who may not have received this information due to existing barriers that often includes limited health literacy. This condition also included medical treatment as usual.
  • Active Comparator: Usual Care
    • Usual Care (Medical Treatment-as-Usual: A control/comparison condition in which patients receive on-going standard care at the federally qualified health center partnering in this research. Facets of care may include medication, surgery, chiropractic, and physical therapy, among others, which are available to all patients in all arms.

Clinical Trial Outcome Measures

Primary Measures

  • Brief Pain Inventory-Intensity (BPI-Intensity)
    • Time Frame: Post-treatment (10-weeks) and follow-up (6 months)
    • Brief Pain Inventory-Intensity indicates level of pain intensity. Higher scores (range 0-10) reflect higher perceived pain severity.

Secondary Measures

  • Brief Pain Inventory-Interference (BPI-Interference)
    • Time Frame: Post-treatment (10-weeks) and follow-up (6 months)
    • Brief Pain Inventory-Intensity indicates level of pain interference. Higher scores (range 0-10) reflect higher perceived pain interference.
  • Patient Health Questionnaire – 9 (PHQ-9)
    • Time Frame: Post-treatment (10-weeks) and follow-up (6 months)
    • Depressive symptoms were assessed using the Patient Health Questionnaire-9 (PHQ-9; range 0-27; higher scores indicate greater severity).
  • Patient Global Impression of Change (PGIC), Pain Intensity
    • Time Frame: Retrospective self-report at post-treatment (10-weeks) and follow-up (6-months).
    • The Patient Global Impression of Change (PGIC) assesses self-perceived changes in pain intensity. Scores were dichotomized such that responses of “very much better” and “much better” were recoded as 1 and all other responses were coded as zero, as performed by Cherkin et al. (2016), in order to indicate clinically meaningful improvement on pain intensity. The following outcome measure data table reports the number of participants per group reporting clinically meaningful improvement at post-treatment (10-weeks) and follow-up (6-months).

Participating in This Clinical Trial

Inclusion Criteria

1. Must be at least 19 yrs-old in order to consent to treatment.

2. Must have received at least one diagnosis consistent with chronic pain by a physician at one of the participating primary care clinics.

3. Must have experienced pain most days of the month for 3 months, and although pain may have more than one pain source, all pain must be non-malignant (e.g., not cancer- or HIV-related).

4. Must be able to speak and understand English.

5. Must have a telephone or other avenue of communication for contact regarding the study.

Exclusion Criteria

1. Must not demonstrate significant cognitive impairment (based on results of a cognitive screener).

2. Must not have current, uncontrolled serious psychological disturbance (e.g., schizophrenia, bipolar disorder) or active substance abuse (based on responses to a structured diagnostic interview).

3. Must have minimal literacy skills (i.e., read at the 1st grade level).

4. Must have been stabilized for at least 4 weeks on current pain and psychotropic medication regimen to reduce potential confounds to treatment results.

5. Must not have a surgery scheduled for the intervention period (~3 months).

6. Must neither be currently receiving a psychosocial treatment for pain (though they may be receiving psychotherapy for non-pain difficulties) nor be a participant in our previous treatment studies.

Gender Eligibility: All

Minimum Age: 19 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • University of Alabama, Tuscaloosa
  • Collaborator
    • Patient-Centered Outcomes Research Institute
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Beverly E. Thorn, Ph.D., Principal Investigator, University of Alabama at Birmingham
    • Joshua C. Eyer, Ph.D., Study Director, University of Alabama at Birmingham

References

Thorn BE, Day MA, Burns J, Kuhajda MC, Gaskins SW, Sweeney K, McConley R, Ward LC, Cabbil C. Randomized trial of group cognitive behavioral therapy compared with a pain education control for low-literacy rural people with chronic pain. Pain. 2011 Dec;152(12):2710-20. doi: 10.1016/j.pain.2011.07.007. Epub 2011 Sep 14.

Day MA, Thorn BE, Kapoor S. A qualitative analysis of a randomized controlled trial comparing a cognitive-behavioral treatment with education. J Pain. 2011 Sep;12(9):941-52. doi: 10.1016/j.jpain.2011.02.354. Epub 2011 Aug 11.

Kuhajda MC, Thorn BE, Gaskins SW, Day MA, Cabbil CM. Literacy and cultural adaptations for cognitive behavioral therapy in a rural pain population. Transl Behav Med. 2011 Jun;1(2):216-23. doi: 10.1007/s13142-011-0026-2.

Day MA, Thorn BE. The relationship of demographic and psychosocial variables to pain-related outcomes in a rural chronic pain population. Pain. 2010 Nov;151(2):467-74. doi: 10.1016/j.pain.2010.08.015.

Campbell LC. Addressing literacy as a barrier in delivery and evaluation of cognitive-behavioral therapy for pain management. Pain. 2011 Dec;152(12):2679-80. doi: 10.1016/j.pain.2011.09.004. Epub 2011 Sep 29.

Thorn BE, Burns JW. Common and specific treatment mechanisms in psychosocial pain interventions: the need for a new research agenda. Pain. 2011 Apr;152(4):705-6. doi: 10.1016/j.pain.2010.12.017. Epub 2011 Jan 11.

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