The Pain Course: a randomised controlled trial and economic evaluation of an internet-delivered pain management program

Use of patient-reported global assessment measures in clinical trials of chronic pain treatments: ACTTION systematic review and considerations

ABSTRACT

Establishing clinically meaningful changes in pain experiences remains important for clinical trials of chronic pain treatments. Regulatory guidance and pain measurement initiatives have recommended including patient-reported global assessment measures (eg, Patient-Global Impression of Change [PGIC]) to aid interpretation of within-patient differences in domain-specific clinical trial outcomes (eg, pain intensity). The objectives of this systematic review were to determine the frequency of global assessment measures inclusion, types of measures, domains assessed, number and types of response options, and how measures were analyzed. Of 4172 abstracts screened across 6 pain specialty journals, we reviewed 96 clinical trials of chronic pain treatments. Fifty-two (54.2%) studies included a global assessment measure. The PGIC was most common (n = 28; 53.8%), with relatively infrequent use of other measures. The majority of studies that used a global assessment measure (n = 31; 59.6%) assessed change or improvement in an unspecified domain. Others assessed overall condition severity (n = 9; 17.3%), satisfaction (n = 8; 15.4%), or overall health status/recovery (n = 5; 9.6%). The number, range, and type of response options were variable and frequently not reported. Response options and reference periods even differed within the PGIC. Global assessment measures were most commonly analyzed as continuous variables (n = 24; 46.2%) or as dichotomous variables with positive categories combined to calculate the proportion of participants with a positive response to treatment (n = 18; 34.6%). This review highlights the substantial work necessary to clarify measurement and use of patient global assessment in chronic pain trials and provides short- and long-term considerations for measure selection, reporting and analysis, and measure development.

Anxiety and Depression in Youth With Chronic Pain: A Systematic Review and Meta-Analysis

Importance

For youth with chronic pain, anxiety and depression are reported as consequences of experiencing pain and maintaining factors of ongoing pain and disability. However, prevalence estimates of anxiety and depression remain unclear.

Objective

To report the prevalence of clinical anxiety and depression for youth with chronic pain and compare symptoms of anxiety and depression between youth with and without chronic pain.

Data Sources

MEDLINE, PsycINFO, CENTRAL, and Embase from inception to April 30, 2023.

Study Selection

Included studies that reported prevalence data or symptom scores for anxiety and/or depression in individuals younger than 25 years (mean, ≤18 years) with chronic pain and were published in English.

Data Extraction and Synthesis

From 9648 nonduplicate records, 801 full-text articles were screened. Screening and data extraction occurred in duplicate. Prevalence was determined using event rate calculations. Between-group symptom differences were calculated using Hedges g. Analyses were conducted using the random-effects model. Reporting bias and Grading of Recommendation, Assessment, Development, and Evaluation assessments were conducted.

Main Outcomes and Measures

Prevalence of anxiety and depression (based on diagnosis and clinical cutoff scores) and differences in anxiety and depression symptoms. Moderators of prevalence and symptom differences were analyzed when data allowed.

Results

A total of 79 studies were included with a total sample of 22 956 youth (n = 12 614 with chronic pain). Most youth were female (mean, 74%), with an age range of 4 to 24 (mean [SD], 13.7 [2.10]) years. The prevalence estimate of anxiety diagnoses was 34.6% (95% CI, 24.0%-47.0%) and the portion that exceeded clinical cutoff scores was 23.9% (95% CI, 18.3%-30.6%). The prevalence of depression diagnoses was 12.2% (95% CI, 7.8%-18.7%) and the portion that exceeded clinical cutoff scores was 23.5% (95% CI, 18.7%-29.2%). Youth with chronic pain had greater symptoms of anxiety (g = 0.61; 95% CI, 0.46-0.77) and depression (g = 0.74; 95% CI, 0.63-0.85) compared with controls. Sex, age, pain location, and recruitment sample may moderate anxiety and depression. Considerable heterogeneity was reported for all outcomes. Studies had a low reporting bias, and outcomes were moderate to high quality.

Conclusions and Relevance

The findings of this meta-analysis suggest that 1 in 3 youth with chronic pain meet criteria for anxiety disorder, and 1 in 8 meet criteria for a depressive disorder. This represents a major clinical comorbidity. Moving forward, screening, prevention, and treatment of mental health should be important health care priorities for youth with chronic pain.

Internet-Delivered Psychological Pain Management: A Prospective Cohort Study Examining Routine Care Delivery by a Specialist Regional Multidisciplinary Pain Service

Several clinical trials have demonstrated the effectiveness of internet-delivered psychological-based pain management programs (PMPs). However, to date, no large studies have reported the outcomes of PMPs when delivered by specialist multidisciplinary pain services in routine care. The present study reports (n = 653) the outcomes of an internet-delivered PMP provided as routine care by a specialist Australian regional pain service over a 6-year period. High levels of treatment commencement (85%) and completion (72%) were observed, with more than 80% of patients reporting they were satisfied with the intervention. Clinical improvements were observed from pretreatment to post-treatment (% change, 95% confidence intervals (CI)) in pain-related disability (8.8%; 4.5, 12.8), depression (28.4%; 23.0, 33.4), anxiety (21.9%; 14.6, 28.5), and pain intensity (7%; 3.5, 10.5), which were maintained to 3-month follow-up. At 3-month follow-up, 27% (23, 31), 46% (41, 51), 44% (39, 49), and 22% (19, 26) reported clinically meaningful (defined as ≥ 30%) improvements in pain-related disability, depression, anxiety, and pain intensity, respectively. These results were obtained with relatively little therapist time per patient (M = 30.0, (standard deviation) SD = 18.8) to deliver the intervention. The current findings highlight the potential of internet-delivered PMPs as part of the services provided by specialist pain services, particularly those servicing large geographical regions and for patients unable to travel to clinics for face-to-face care. PERSPECTIVE: This study reports the outcomes of the routine delivery of an internet-delivered psychological PMP by a specialist pain service. The findings highlight the potential of this model of care when provided by specialist pain services, particularly for patients not unable to attend and not requiring intensive face-to-face care.

The association between physical intervention use and treatment outcomes in patients participating in an online and psychologically informed pain management program

BACKGROUND

The availability of multidisciplinary care for the management of chronic pain is uncommon outside specialist clinics. The present study aims to determine the physical intervention use of patients participating in an online psychological pain management program and whether exposure to physical interventions in these patients alters treatment outcomes compared with patients who do not access physical interventions.

METHODS

Data were obtained from 2 previously published randomized controlled trials of an online psychological pain management program. Physical intervention exposure (categories: none, 1-3 sessions, 4+ sessions) was assessed at baseline, after treatment, and at 3-month follow-up. Primary outcomes included depression, anxiety, pain intensity, and pain-related disability. Generalized estimating equation models were used to compare treatment outcomes among those with different physical intervention frequencies and periods of exposure. We assessed whether changes in primary outcomes differed (moderated) by the period and category of physical intervention exposure.

RESULTS

Of the patients (n = 1074) who completed the baseline questionnaire across both randomized controlled trials, 470 (44%) reported physical intervention use at baseline, 383 (38%) reported physical intervention use after treatment, and 363 (42%) reported physical intervention use at 3-month follow-up. On average, there were moderate-large reductions from baseline to after treatment with respect to all outcomes (Cohen's d = 0.36-0.82). For all outcomes, the interaction of time by physical intervention exposure was statistically nonsignificant.

CONCLUSION

A substantial proportion of patients who participated in a psychologically informed pain management program were establishing, continuing, or stopping additional physical interventions. The frequency of and period of exposure to physical interventions did not appear to moderate treatment outcomes.

CLINICAL TRIAL REGISTRATION

Australian and New Zealand Clinical Trials Registry (ACTRN12613000252718 and ACTRN12615001003561). The website for registration information is https://www.anzctr.org.au.

Sudden gains in depression and anxiety during an online pain management programme for chronic pain

BACKGROUND

Chronic pain is associated with depression and anxiety symptoms. Pain management programms, delivered face-to-face or via the internet, can effectively help adults manage the impacts of chronic pain. Sudden gains are defined as substantial, rapid, and lasting symptom reductions that occur between consecutive treatment sessions and have been associated with better treatment outcomes in non-pain samples. This study examined whether adults with chronic pain report sudden gains in depression or anxiety symptoms during an 8-week online pain management programme, and whether sudden gains were associated with better treatment outcomes for depression or anxiety. Dominant theories of sudden gains argue that therapists are required for sudden gains to be maintained and improve treatment outcomes.

METHODS

Using data from a published randomized controlled trial (n = 338), sudden gains and treatment outcomes were compared across three levels of therapist guidance provided alongside the programme: weekly, optional, and self-guided.

RESULTS

Similar rates of sudden gains were observed in depression (22%) and anxiety (24%) across the treatment period, and most sudden gains occurred between Weeks 1 and 2 of treatment. Therapist guidance was not associated with sudden gains; higher baseline symptom severity emerged as the only consistent predictor of sudden gain status. No significant differences in treatment outcomes for depression or anxiety symptoms between sudden gainers and non-gainers were observed across therapist guidance conditions.

CONCLUSIONS

These results do not support an association between sudden gains in depression or anxiety symptoms and better post-treatment outcomes, at least for adults with chronic pain.

SIGNIFICANCE STATEMENT

Sudden gains in depression and anxiety symptoms were not associated with improved treatment outcomes for adults with chronic pain who participated in an online pain management programme, regardless of the level of therapist guidance provided. These findings suggest possible differences in symptom change in chronic pain samples compared to general population samples.

Internet-Delivered Psychological Pain-Management for Young Adults With Chronic Pain: An Investigation of Clinical Trial Data

Young adults report chronic pain at rates of around 12% but lack access to clinical services. There is interest in learning how this emerging adult population engages with and responds to treatment. Using data from young adults aged 18 to 30 years (Mage = 25.8, SD = 3.2), taken from 4 previous randomised controlled trials, the current study investigated the feasibility, acceptability, and efficacy of an internet-delivered psychological pain-management intervention for young adults with chronic pain. We compared young adults in a treatment group (n = 104) with 1) a young-adult wait-list control group (n = 48), and 2) a treatment group reflecting the average-aged participant from the previous trials (39-63 years, n = 561). Feasibility was determined through treatment engagement, adherence and completion, and acceptability through a treatment satisfaction measure. Clinical outcomes were disability, pain intensity, anxiety, and depression; assessed at pre-treatment, post-treatment, and 3-month follow-up. Generalised estimation equation analyses were undertaken, using multiple imputations to account for missing data. Young adults had high engagement and acceptability ratings, though 34% did not complete the intervention. The treatment group significant improved across all outcomes, compared with control, with improvements maintained at follow-up. Post-treatment improvements were equivalent for young-adult and average-aged adult treatment groups, with no significant differences in feasibility or acceptability outcomes. Findings indicate young adults can engage with and show improvements following a psychological pain-management intervention designed for all adults with chronic pain. Future research is encouraged to examine outcomes related to role functioning of young adults, and moderators of treatment acceptability and efficacy for this population. PERSPECTIVE: Secondary analysis of data from 4 RCTs found an Internet-delivered psychological pain-management intervention acceptable and clinically efficacious for improving disability, anxiety, depression and pain intensity in young adults (18-30) with chronic pain.

Acceptability of the power over pain portal among patients awaiting tertiary care consultation: A qualitative study of patients' perceptions

Objective

Chronic pain affects approximately 7.6 million Canadians and access to care remains an issue. The Power Over Pain (POP) Portal offers immediate access to evidence-based resources ranging from low- (e.g. education, self-management), to high- (e.g. individual counseling) intensity. We explored the POP Portal's acceptability, usability, and perceived usefulness among patients newly referred to a tertiary care pain clinic.

Methods

We used a descriptive, qualitative approach with a prospective cohort of 60 adult patients recently referred to The Ottawa Hospital Pain Clinic. Patients were offered an orientation session and asked to participate in a seven-week follow-up interview. Data were thematically analyzed in an iterative process, whereby responses were reviewed and coded by two members of the research team.

Results

Of the 60 patients referred to the POP Portal by clinic clerks, 45 participated in the orientation session, and 40 completed a four-week follow-up. All 40 patients had used the POP Portal and recommended that we continue to offer the POP Portal to patients awaiting care. We identified overarching themes of acceptability (five subthemes), usability (ten subthemes), accessibility (three subthemes), and patient value of the POP Portal (three subthemes). This includes (1) the POP Portal provides easy access to chronic pain resources; (2) the POP Portal is helpful in developing an understanding of chronic pain; and (3) improvements to the POP Portal are needed to increase usability and foster a user-friendly experience.

Conclusions

The POP Portal offers accessible and diverse resources for people living with pain awaiting a tertiary care consultation; however, patients would like to see resources specific to diagnosis. Improvements are suggested to allow greater increase the POP Portal usability.

Physical activity with person-centered guidance supported by a digital platform or with telephone follow-up for persons with chronic widespread pain: Health economic considerations along a randomized controlled trial

OBJECTIVES

The aim was to investigate the resource use and costs associated with the co-creation of a physical activity plan for persons with chronic widespread pain (CWP) followed by support through a digital platform, compared to telephone follow-up.

METHODS

In this 12-month cost comparison study following up results after a randomized controlled trial, individuals with CWP, aged 20-65 years, were recruited at primary healthcare units in Western Sweden. All participants developed a person-centered health-enhancing physical activity plan together with a physiotherapist. Participants were then randomized to either an intervention group (n  =  69) who had a follow-up visit after 2 weeks and was thereafter supported through a digital platform, or an active control group (n  =  70) that was followed up through one phone call after a month. Costs to the health system were salary costs for the time recorded by physiotherapists when delivering the interventions.

RESULTS

The reported time per person (2.8 h during the 12 months) corresponded to costs of SEK 958 (range: 746-1,517) for the initial visits and follow-up (both study groups), and an additional 2.5 h (corresponding to a mean SEK 833; range: 636-1,257) for the time spent in the digital platform to support the intervention group.

CONCLUSION

After co-creation of a physical activity plan, it was more costly to support persons through a digital platform, compared to telephone follow-up.

Evaluation of a therapist-guided virtual psychological pain management program when provided as routine care: a prospective pragmatic cohort study

INTRODUCTION

Numerous randomized controlled trials have evaluated the outcomes of internet-delivered psychological pain management programs (PMPs) as a way of increasing access to care for people with chronic pain. However, there are few reports of the effectiveness of these PMPs when provided as part of routine care.

METHODS

The present study sought to report the clinical and demographic characteristics of users (n = 1367) and examine the effectiveness of an established internet-delivered psychological PMP program in improving several pain-related outcomes, when offered at a national digital mental health service over a 5-year period. It also sought to comprehensively explore predictors of treatment commencement, treatment completion, and clinical improvement.

RESULTS

Evidence of clinical improvements (% improvement; Hedges g) were found for all outcomes, including pain interference (18.9%; 0.55), depression (26.1%; 0.50), anxiety (23.9%; 0.39), pain intensity (12.8%; 0.41), pain self-efficacy (-23.8%; -0.46) and pain-catastrophizing (26.3%; 0.56). A small proportion of users enrolled but did not commence treatment (13%), however high levels of treatment completion (whole treatment = 63%; majority of the treatment = 75%) and satisfaction (very satisfied = 45%; satisfied = 37%) were observed among those who commenced treatment. There were a number of demographic and clinical factors associated with commencement, completion and improvement, but no decisive or dominant predictors were observed.

DISCUSSION

These findings highlight the effectiveness and acceptability of internet-delivered psychological PMPs in routine care and point to the need to consider how best to integrate these interventions into the pathways of care for people with chronic pain.

The Timing and Magnitude of Improvements in Depression, Anxiety, Disability, and Pain Intensity During an Internet-delivered Program for Chronic Pain

Numerous studies have found that pain management programs are an effective treatment option for people with chronic pain. However, little is known about when people experience improvements during these programs and why they are effective. Using a secondary analysis, the current study examined the timing and magnitude of symptom change during an 8-week internet-delivered psychological pain management program for people with chronic pain. The change in 4 outcomes was examined: depression (n = 881), anxiety (n = 561), disability (n = 484), and pain intensity (n = 484). The largest improvements in depression, anxiety, and disability were reported during the first half of treatment (ie, 4 weeks), whereas the largest reductions in pain intensity were reported during the second half of treatment. Half the participants had experienced a clinically meaningful improvement in depression or anxiety, and a third of participants had reported such an improvement in disability by midtreatment (ie, 5 weeks after baseline). In a subgroup analysis (n = 397), this pattern of change in depression and anxiety symptoms did not differ based on the level of therapist guidance. This study highlights the importance of the first few weeks of psychological pain management programs and encourages future work to examine how the mechanisms underpinning rapid change may be harnessed to optimize care for people with chronic pain. PERSPECTIVE: This study found that depression, anxiety, and disability improved rapidly during the first half of an 8-week internet-delivered pain management program, and most of the prepost change had occurred by midtreatment. This work highlights the therapeutic potential of the first few treatment sessions and prompts future research into a rapid responding.

Psychological therapies delivered remotely for the management of chronic pain (excluding headache) in adults

BACKGROUND

Chronic pain (pain lasting three months or more) is an unpleasant sensory and emotional experience associated with actual or potential tissue damage. Common types (excluding headache) include back pain, fibromyalgia, and neuropathic pain. Access to traditional face-to-face therapies can be restricted by healthcare resources, geography, and cost. Remote technology-based delivery of psychological therapies has the potential to overcome treatment barriers. However, their therapeutic effectiveness compared to traditional delivery methods requires further investigation.

OBJECTIVES

To determine the benefits and harms of remotely-delivered psychological therapies compared to active control, waiting list, or treatment as usual for the management of chronic pain in adults.

SEARCH METHODS

We searched for randomised controlled trials (RCTs) in CENTRAL, MEDLINE, Embase, and PsycINFO to 29 June 2022. We also searched clinical trials registers and reference lists. We conducted a citation search of included trials to identify any further eligible trials.

SELECTION CRITERIA

We included RCTs in adults (≥ 18 years old) with chronic pain. Interventions included psychological therapies with recognisable psychotherapeutic content or based on psychological theory. Trials had to have delivered therapy remote from the therapist (e.g. Internet, smartphone application) and involve no more than 30% contact time with a clinician. Comparators included treatment as usual (including waiting-list controls) and active controls (e.g. education).

DATA COLLECTION AND ANALYSIS

We used standard Cochrane methodological procedures.

MAIN RESULTS

We included 32 trials (4924 participants) in the analyses. Twenty-five studies delivered cognitive behavioural therapy (CBT) to participants, and seven delivered acceptance and commitment therapy (ACT). Participants had back pain, musculoskeletal pain, opioid-treated chronic pain, mixed chronic pain, hip or knee osteoarthritis, spinal cord injury, fibromyalgia, provoked vestibulodynia, or rheumatoid arthritis. We assessed 25 studies as having an unclear or high risk of bias for selective reporting. However, across studies overall, risk of bias was generally low. We downgraded evidence certainty for primary outcomes for inconsistency, imprecision, and study limitations. Certainty of evidence ranged from moderate to very low. Adverse events were inadequately reported or recorded across studies. We report results only for studies in CBT here. Cognitive behavioural therapy (CBT) versus treatment as usual (TAU) Pain intensity Immediately after treatment, CBT likely demonstrates a small beneficial effect compared to TAU (standardised mean difference (SMD) -0.28, 95% confidence interval (CI) -0.39 to -0.16; 20 studies, 3206 participants; moderate-certainty evidence). Participants receiving CBT are probably more likely to achieve a 30% improvement in pain intensity compared to TAU (23% versus 11%; risk ratio (RR) 2.15, 95% CI 1.62 to 2.85; 5 studies, 1347 participants; moderate-certainty evidence). They may also be more likely to achieve a 50% improvement in pain intensity (6% versus 2%; RR 2.31, 95% CI 1.14 to 4.66; 4 studies, 1229 participants), but the evidence is of low certainty. At follow-up, there is likely little to no difference in pain intensity between CBT and TAU (SMD -0.04, 95% CI -0.17 to 0.09; 8 studies, 959 participants; moderate-certainty evidence). The evidence comparing CBT to TAU on achieving a 30% improvement in pain is very uncertain (40% versus 24%; RR 1.70, 95% CI 0.82 to 3.53; 1 study, 69 participants). No evidence was available regarding a 50% improvement in pain. Functional disability Immediately after treatment, CBT may demonstrate a small beneficial improvement compared to TAU (SMD -0.38, 95% CI -0.53 to -0.22; 14 studies, 2672 participants; low-certainty evidence). At follow-up, there is likely little to no difference between treatments (SMD -0.05, 95% CI -0.23 to 0.14; 3 studies, 461 participants; moderate-certainty evidence). Quality of life Immediately after treatment, CBT may not have resulted in a beneficial effect on quality of life compared to TAU, but the evidence is very uncertain (SMD -0.16, 95% CI -0.43 to 0.11; 7 studies, 1423 participants). There is likely little to no difference between CBT and TAU on quality of life at follow-up (SMD -0.16, 95% CI -0.37 to 0.05; 3 studies, 352 participants; moderate-certainty evidence). Adverse events Immediately after treatment, evidence about the number of people experiencing adverse events is very uncertain (34% in TAU versus 6% in CBT; RR 6.00, 95% CI 2.2 to 16.40; 1 study, 140 participants). No evidence was available at follow-up. Cognitive behavioural therapy (CBT) versus active control Pain intensity Immediately after treatment, CBT likely demonstrates a small beneficial effect compared to active control (SMD -0.28, 95% CI -0.52 to -0.04; 3 studies, 261 participants; moderate-certainty evidence). The evidence at follow-up is very uncertain (mean difference (MD) 0.50, 95% CI -0.30 to 1.30; 1 study, 127 participants). No evidence was available for a 30% or 50% pain intensity improvement. Functional disability Immediately after treatment, there may be little to no difference between CBT and active control on functional disability (SMD -0.26, 95% CI -0.55 to 0.02; 2 studies, 189 participants; low-certainty evidence). The evidence at follow-up is very uncertain (MD 3.40, 95% CI -1.15 to 7.95; 1 study, 127 participants). Quality of life Immediately after treatment, there is likely little to no difference in CBT and active control (SMD -0.22, 95% CI -1.11 to 0.66; 3 studies, 261 participants; moderate-certainty evidence). The evidence at follow-up is very uncertain (MD 0.00, 95% CI -0.06 to 0.06; 1 study, 127 participants). Adverse events Immediately after treatment, the evidence comparing CBT to active control is very uncertain (2% versus 0%; RR 3.23, 95% CI 0.13 to 77.84; 1 study, 135 participants). No evidence was available at follow-up.

AUTHORS' CONCLUSIONS

Currently, evidence about remotely-delivered psychological therapies is largely limited to Internet-based delivery of CBT. We found evidence that remotely-delivered CBT has small benefits for pain intensity (moderate certainty) and functional disability (moderate to low certainty) in adults experiencing chronic pain. Benefits were not maintained at follow-up. Our appraisal of quality of life and adverse events outcomes post-treatment were limited by study numbers, evidence certainty, or both. We found limited research (mostly low to very low certainty) exploring other psychological therapies (i.e. ACT). More high-quality studies are needed to assess the broad translatability of psychological therapies to remote delivery, the different delivery technologies, treatment longevity, comparison with active control, and adverse events.

Psychologically Informed Practice: The Importance of Communication in Clinical Implementation

There has been increasing interest in the secondary prevention of chronic pain and pain-associated disability over the past 3 decades. In 2011, psychologically informed practice (PiP) was suggested as a framework for managing persistent and recurrent pain, and, since then, it has underpinned the development of stratified care linking risk identification (screening). Although PiP research trials have demonstrated clinical and economic advantage over usual care, pragmatic studies have been less successful, and qualitative studies have identified implementation difficulties in both system delivery and individual clinical management. Effort has been put into the development of screening tools, the development of training, and the assessment of outcomes; however, the nature of the consultation has remained relatively unexplored. In this Perspective, a review of the nature of clinical consultations and the clinician-patient relationship is followed by reflections on the nature of communication and the outcome of training courses. Consideration is given to the optimization of communication, including the use of standardized patient-reported measures and the role of the therapist in facilitating adaptive behavior change. Several challenges in implementing a PiP approach in day-to-day practice are then considered. Following brief consideration of the impact of recent developments in health care, the Perspective concludes with a brief introduction to the PiP Consultation Roadmap (the subject of a companion paper), the use of which is suggested as a way of structuring the consultation with the flexibility required for a patient-centered approach to guided self-management of chronic pain conditions.

Can Internet-Delivered Pain Management Programs Reduce Psychological Distress in Chronic Pain? Exploring Relationships Between Anxiety and Depression, Pain Intensity, and Disability

Background

Adults with chronic pain who also report high pain intensity and disability are more likely to experience depression and anxiety symptoms. The present study examined changes in anxiety and depression symptoms after an Internet-delivered pain management program based on baseline pain intensity and disability severity categories.

Methods

We conducted a secondary analysis of data from four randomized controlled trials (N = 1,333).

Results

Greater pain intensity and disability were associated with increased odds of elevated anxiety or depression symptoms at baseline. Treatment led to greater reductions in anxiety and depression symptoms compared with a waitlist control, and these improvements occurred irrespective of baseline pain intensity or disability severity. Those individuals who reported ≥30% improvements in pain intensity or disability after treatment were more likely to also report ≥30% improvements in psychological symptoms. Importantly, most participants who achieved ≥30% improvements in depression and anxiety had not experienced such improvements in pain intensity or disability.

Conclusion

These findings suggest that emerging Internet-delivered pain management programs can lead to reductions in psychological distress even when pain intensity and disability are severe or do not improve with treatment. This indicates the value of such treatments in treating distress and improving mental health in people with chronic pain.