Pain Willingness Research Articles

Self-efficacy and pain acceptance as mediators of the relationship between pain and performance of valued life activities in women and men with rheumatoid arthritis

Objective: To study whether personal factors (self-efficacy and pain acceptance) mediate the relationship between pain and performance of valued life activities in persons with rheumatoid arthritis. Methods: Persons with rheumatoid arthritis for at least four years (n = 737; 73% women) answered a questionnaire measuring self-efficacy, pain acceptance, performance of valued life activities, and self-rated pain. Relationships among these constructs were explored using univariate and multivariate analyses. Structural equation modelling was then used to examine the mediational role of personal factors on the relationship between pain and performance of valued life activities. Results: A direct negative association between pain and performance of valued life activities was identified (Beta = .34, P < .001). This suggests that people with rheumatoid arthritis who had higher levels of pain has increased difficulties in performing valued life activities. Self-efficacy and activity engagement component of pain acceptance mediated the relationship between pain and performance of valued life activities, however the pain willingness component of pain acceptance did not influence participation in valued life activities. Conclusion: These findings highlight the importance of considering personal factors, such as pain acceptance and self-efficacy, in facilitating participation in valued life activities.

The mediating role of pain acceptance during mindfulness-based cognitive therapy for headache

ObjectivesThis study aimed to determine if mindfulness-based cognitive therapy (MBCT) engenders improvement in headache outcomes via the mechanisms specified by theory: (1) change in psychological process, (i.e., pain acceptance); and concurrently (2) change in cognitive content, (i.e., pain catastrophizing; headache management self-efficacy). DesignA secondary analysis of a randomized controlled trial comparing MBCT to a medical treatment as usual, delayed treatment (DT) control was conducted. Participants were individuals with headache pain who completed MBCT or DT (N=24) at the Kilgo Headache Clinic or psychology clinic. Standardized measures of the primary outcome (pain interference) and proposed mediators were administered at pre- and post-treatment; change scores were calculated. Bootstrap mediation models were conducted. ResultsPain acceptance emerged as a significant mediator of the group-interference relation (p<.05). Mediation models examining acceptance subscales showed nuances in this effect, with activity engagement emerging as a significant mediator (p<.05), but pain willingness not meeting criteria for mediation due to a non-significant pathway from the mediator to outcome. Criteria for mediation was also not met for the catastrophizing or self-efficacy models as neither of these variables significantly predicted pain interference. ConclusionsPain acceptance, and specifically engagement in valued activities despite pain, may be a key mechanism underlying improvement in pain outcome during a MBCT for headache pain intervention. The theorized mediating role of cognitive content factors was not supported in this preliminary study. A large, definitive trial is warranted to replicate and extend the findings in order to streamline and optimize MBCT for headache.

Latent Class Analysis of the Short and Long Forms of the Chronic Pain Acceptance Questionnaire: Further Examination of Patient Subgroups

A substantial literature indicates that pain acceptance is a useful behavioral process in chronic pain rehabilitation. Pain acceptance consists of willingness to experience pain and to engage in important activities even in the presence of pain and is often measured using the Chronic Pain Acceptance Questionnaire (CPAQ). Previous traditional cluster analyses of the 20-item CPAQ identified 3 patient clusters that differed across measures of patient functioning in meaningful ways. The aims of this study were to replicate the previous study in a new sample, using the more robust method of latent class analysis (LCA), and to compare the cluster structure of the CPAQ and the shorter CPAQ-8. In total, 914 patients with chronic pain completed the CPAQ and a range of measures of psychological and physical function. Patient clusters identified via LCA were then used to compare patients across functional measures. Contrary to previous research, LCA demonstrated that a 4-cluster structure was superior to a 3-cluster structure. Consistent with previous research, cluster membership based on patterns of pain willingness and activity engagement was significantly associated with specific patterns of psychological and physical function, in line with theoretical predictions. These cluster structures were similar for both CPAQ-20 and CPAQ-8 items. These results provide further evidence of the relevance of chronic pain acceptance, and a more nuanced understanding of how the components of acceptance are related to function. PerspectivePain acceptance is important in chronic pain. The findings of the present study, which included 914 individuals with chronic pain, provide support for 4 discrete groups of patients based on levels of acceptance (low, medium, and high), as well as a group with a high level of activity engagement and low willingness to have pain. These groups appear statistically robust and differed in predictable ways across measures of functioning.

A Cross-Sectional Study of Psychological Comparison Processes That May Underlie the Acceptance of Chronic Pain.

In addition to beliefs indicating Activity Engagement and Pain Willingness, Affective acceptance of pain may also be a relevant dimension and manifestation of acceptance Social comparisons, temporal comparisons and counterfactual comparisons are related to acceptance of pain In patients with pain psychological comparison processes can be relevant in diagnosing possible causes of non-optimal acceptance of chronic pain Practitioners may try to influence each of the three types of psychological comparison processes in individuals and observe the effects.

The Psychological Inflexibility in Pain Scale (PIPS) - validation, factor structure and comparison to the Chronic Pain Acceptance Questionnaire (CPAQ) and other validated measures in German chronic back pain patients.

BackgroundAcceptance and Commitment Therapy (ACT) for pain offers an alternative to traditional Cognitive Behavioural Therapy (CBT) approaches. ACT focuses on the enhancement of ‘psychological flexibility’ that enables individuals to pursue their values and goals despite pain. To assess specific treatment effect or mediators and moderators of change, questionnaires measuring ACT constructs are needed.MethodsThe Psychological Inflexibility in Pain Scale (PIPS) was translated into German and completed by 182 participants with chronic back pain (70.3 % women, age 51.0 ± 10.5 years). Item analyses and a confirmatory factor analysis were computed as well as correlations with the Chronic Pain Acceptance Questionnaire (CPAQ), which measures related, but slightly different ACT-related constructs, and self-reported disability, pain intensity and further pain-related questionnaires.ResultsThe confirmatory factor analysis reproduced the original structure with two subscales and a good fit. The internal consistencies of the subscales were Cronbach’s α = .91 (Avoidance) and α = .26 (Fusion). Average item-whole correlations of the items with the respective subscales were r = .71 (Avoidance) and r = .20 (Fusion). The highest correlations were observed for Avoidance with the CPAQ (r = −.81), the Tampa Scale of Kinesiophobia (r = .58) and the Pain Catastrophizing Scale (r = .56) and for Fusion with the CPAQ subscale Pain willingness (r = −.55). The PIPS subscale Avoidance predicted pain-related disability even after controlling for catastrophizing and fear of movement.ConclusionsThe PIPS subscale Avoidance may be a valuable instrument to assess treatment processes in future RCTs. The PIPS subscale Fusion seemed more problematic in the German sample with chronic back pain. More research on the comparison between PIPS and other questionnaires assessing psychological flexibility and the usefulness of the concept ‘Fusion’ for chronic pain are needed.Electronic supplementary materialThe online version of this article (doi:10.1186/s12891-015-0641-z) contains supplementary material, which is available to authorized users.

&lt;b&gt;Stretching intervention for pediatric caregivers in a University Hospital

This study aimed to provide an interaction time among pediatric caregivers performing group stretching activities, and to verify the effectiveness of a stretching session to improve flexibility. Caregivers of the pediatric ward of a university hospital participated in a group activity, with 17 static postures of self-stretching techniques, held each position for 30 seconds. Muscle flexibility was assessed before and after the stretching session, using the Bank of Wells, capable of measuring the flexibility of the posterior muscle chain. After a single series of global stretching, the elongation of the posterior muscle chain of the subjects significantly increased, with a gain of 18.05%. Furthermore, participants reported reduction in muscle pain and greater willingness to perform the tasks throughout the day, with a moment of leisure to help them cope with the situation they were in. Therefore, the program of stretching activities for hospital caregivers improved the flexibility in only one session, and represents an important intervention for the promotion of welfare and physical interaction between caregivers and staff, since it is one more possibility for physical therapists to work within the hospital context.

Rasch analysis of the Chronic Pain Acceptance Questionnaire Revised in people with knee osteoarthritis.

To examine the measurement properties of the Chronic Pain Acceptance Questionnaire Revised (CPAQ-R) and its subscales with people with knee osteoarthritis using Rasch analysis. Cross-sectional questionnaire study. A total of 176 participants with radiographic evidence of osteoarthritis of the knee, as identified by a Kellgren-Lawrence grade ≥ 2, and pain on most days for at least the past month. Participants completed the CPAQ-R at home within a set of measures covering different aspects of osteoarthritis pain. The questionnaires were returned by pre-paid envelope. Rasch analysis was conducted on the Activity Engagement and Pain Willingness subscales and the Total scale using Rasch Unidimensional Measurement Models (RUMM2020). The Activity Engagement and Pain Willingness subscales fit the Rasch model following minimal changes, including re-scoring and removal of item 14 due to misfit. Both subscales passed tests of unidimensionality. Although the Total scale could be adjusted to yield adequate fit statistics, it demonstrated multidimensionality. The Activity Engagement and Pain Willingness subscales have good measurement properties for 2 distinct factors relevant to pain acceptance. CPAQ-R is a valid measurement tool that may help target and evaluate response to treatments that address low activity engagement and pain willingness in people with osteoarthritis.

The Role of Parent Psychological Flexibility in Relation to Adolescent Chronic Pain: Further Instrument Development

Parental responses to their child's pain are associated with the young person's functioning. Psychological flexibility—defined as the capacity to persist with or change behavior, depending on one's values and the current situation, while recognizing cognitive and noncognitive influences on behavior—may provide a basis for further investigating the role of these responses. The Parent Psychological Flexibility Questionnaire (PPFQ) is a promising but preliminary measure of this construct. Parents of 332 young people with pain (301 mothers, 99 fathers, 68 dyads) completed the PPFQ during appointments in a pediatric pain clinic. Initial item screening eliminated 6 of the 31 items. Mothers' and fathers' data were then subjected to separate principal components analyses with oblique rotation, resulting in a 4-factor solution including 17 items, with subscales suggesting Values-Based Action, Pain Acceptance, Emotional Acceptance, and Pain Willingness. The PPFQ correlated significantly with adolescent-rated pain acceptance, functional disability, and depression. Differences were observed between mothers' and fathers' PPFQ scores, in particular, those related to school absence and fears of physical injury. The 17-item PPFQ appears reasonable for research and clinical use and may potentially identify areas for intervention with parents of young people with chronic pain. PerspectiveParent psychological flexibility, as measured by the PPFQ, appears relevant to functioning, depression, and pain acceptance in adolescents with chronic pain. This model may help tie parental responses to adolescent distress and disability and may help clarify the development and maintenance of disability within the context of chronic pain.

Fear of pain in pediatric headache.

The current study provides the first measure of pain-related fear for pediatric headache patients. From a large pediatric headache clinic, a cross-sectional cohort of 206 children and adolescents completed measures of pain-related fear, anxiety sensitivity, catastrophizing, pain acceptance, functional disability, and school functioning. The two-factor solution of the Fear of Pain Questionnaire (FOPQ) was confirmed from the originally derived structure with pediatric headache patients. Simultaneously regressing FOPQ subscales fear of pain and activity avoidance on theorized construct validity measures demonstrated that fear of pain was more closely linked with anxiety sensitivity and pain catastrophizing while activity avoidance had a strong negative association with pain acceptance (activity engagement and pain willingness). Pain-related fear was not significantly associated with pain level. After controlling for demographic factors and pain, fear of pain and activity avoidance accounted for an additional 26% of the variance in functional disability and school functioning outcomes, with activity avoidance accounting for much of this relationship. Although typically considered an influential construct among musculoskeletal patients, pain-related fear is also an important factor influencing functioning among pediatric headache patients, with the dimension of activity avoidance particularly salient.

Revisiting Chronic Pain Patient Profiling: An Acceptance‐based Approach in an Online Sample

Over 116 million Americans experience chronic pain, incurring an annual cost of $635 bn in healthcare and lost work. Acceptance-based therapies have gained increasing recognition for improving functional outcomes. In our online chronic pain sample, we predicted that (1) patients would cluster into low, medium and high groups of chronic pain acceptance and (2) positive affect, negative affect and perceived disability scores would differ overall by cluster, with the most positive outcomes found in the high cluster and the least found in the low cluster. Participants completed the Chronic Pain Acceptance Questionnaire, Positive and Negative Affect Scales and the Pain Disability Index. A k-means cluster analysis was conducted using activity engagement (AE) and pain willingness (PW) totals from the Chronic Pain Acceptance Questionnaire. As predicted, cluster analysis specified three groups: low AE/low PW, high AE/high PW and medium AE/medium PW. Significant multivariate analysis of covariance results were obtained according to Wilks' λ (0.55), F(6,266) = 15.39, p < 0.01, and indicated differences in positive affect, negative affect and perceived disability within each cluster. Follow-up analyses of covariance revealed mean differences in the predicted directions: the high-high group showed the most positive affect and the least negative affect and perceived disability. Conversely, the low-low group displayed the least positive affect (M = 20.28, SD = 7.86), the most negative affect (M = 28.05, SD = 9.33) and perceived disability (M = 49.57, SD = 9.46). The presence of these clusters introduces key questions about the possibility of creating tailored interventions based on cluster profiles. Higher levels of Acceptance are associated with better functional and affective outcomes for chronic pain patients. Lower Acceptance is associated with poorer functional and affective outcomes. Tailoring interventions using Acceptance-based profiling may improve chronic pain therapies.

Does pain acceptance predict physical and psychological outcomes in cancer outpatients with pain?

Pain acceptance has been associated with improved physical and psychosocial well-being in chronic non-malignant pain patients. However, its effects are unclear in cancer outpatients with pain. Our aim was to determine whether pain acceptance predicts reduced pain, pain interference with function, anxiety, and depression in cancer outpatients. We recruited 116 outpatients from a tertiary oncology center, with various types of cancer and pain levels. Patients completed the Brief Pain Inventory, the Hospital Anxiety and Depression Scale and the Chronic Pain Acceptance Questionnaire, the latter of which comprises activity engagement and pain willingness. We carried out multiple regression analyses, adjusting for patient characteristics and outcomes. Activity engagement and pain willingness significantly predicted pain interference with function (P=0.033 and P=0.041 respectively). However, only activity engagement predicted anxiety (P=0.001) and depression (P&amp;lt;0.001). These findings support the benefi- cial role of pain acceptance in patients’ functional adaptation to cancer-related pain. Activity engagement in particular, shows promise in fostering psychological well-being. Further studies could confirm its role in reducing anxiety and depression in cancer patients with pain and whether it should be included in cancer pain management interventions.

Does Pain Acceptance Predict Physical and Psychological Outcomes in Cancer Outpatients with Pain?

Pain acceptance has been associated with improved physical and psychosocial well-being in chronic non-malignant pain patients. However, its effects are unclear in cancer outpatients with pain. Our aim was to determine whether pain acceptance predicts reduced pain, pain interference with function, anxiety, and depression in cancer outpatients. We recruited 116 outpatients from a tertiary oncology center, with various types of cancer and pain levels. Patients completed the Brief Pain Inventory, the Hospital Anxiety and Depression Scale and the Chronic Pain Acceptance Questionnaire, the latter of which comprises activity engagement and pain willingness. We carried out multiple regression analyses, adjusting for patient characteristics and outcomes. Activity engagement and pain willingness significantly predicted pain interference with function (P=0.033 and P=0.041 respectively). However, only activity engagement predicted anxiety (P=0.001) and depression (P<0.001). These findings support the beneficial role of pain acceptance in patients’ functional adaptation to cancer-related pain. Activity engagement in particular, shows promise in fostering psychological well-being. Further studies could confirm its role in reducing anxiety and depression in cancer patients with pain and whether it should be included in cancer pain management interventions. Further studies could confirm its role in reducing anxiety and depression in cancer patients with pain, and whether it should be included in cancer pain management interventions.

Chronic Pain Acceptance Questionnaire

Cross-sectional evaluation of the psychometric properties of a translated questionnaire. To validate the Italian version of the Chronic Pain Acceptance Questionnaire (CPAQ) to allow its use with Italian-speaking patients with chronic low back pain (LBP). Growing attention is being given to cognitive-behavioral measures to improve interventions for LBP. The CPAQ has never been validated in Italian subjects with chronic LBP. The psychometric testing included confirmatory factor analysis, reliability by internal consistency (Cronbach α), test-retest reliability (intraclass correlation coefficient), sensitivity to change by calculating the smallest detectable change, and construct validity by comparing CPAQ with a pain numerical rating scale, the Roland-Morris Disability Questionnaire Scale, the Hospital Anxiety and Depression Scale, the Pain Catastrophizing Scale, and the Tampa Scale of Kinesiophobia (Pearson correlations). Hierarchical multiple regression analyses were computed to further investigate construct validity of the CPAQ subscales. The questionnaire was administered to 142 subjects with chronic LBP. Factor analysis confirmed a 2-factor (viz., Activities Engagement and Pain Willingness) 20-item solution, achieving a good data-model fit. Internal consistency (α = 0.88) and test-retest reliability (intraclass correlation coefficient = 0.86) were good. The smallest detectable change was 22. Construct validity showed a moderate correlation between the CPAQ and numerical rating scale (r = -0.485), Roland-Morris Disability Questionnaire Scale (r = -0.594), and Tampa Scale of Kinesiophobia (r = -0.595), and a close correlation with Hospital Anxiety and Depression Scale (r = -0.610 for the Anxiety score and r = -0.659 for the Depression score) and Pain Catastrophizing Scale (r = -0.658). The standardized regression coefficients for Activity Engagement were significant in all of the equations, and those for Pain Willingness were significant in the anxiety, depression, and disability equations. The Italian CPAQ had a good factorial structure and psychometric properties that replicated the results of other versions. Its use is recommended for clinical and research purposes. 2.

Guided internet-delivered acceptance and commitment therapy for chronic pain patients: A randomized controlled trial

Acceptance and commitment therapy (ACT) interventions for persons with chronic pain have recently received empirical support. ACT focuses on reducing the disabling influences of pain through targeting ineffective control strategies and teaches people to stay in contact with unpleasant emotions, sensations, and thoughts. The aim of the present study was to investigate the effect of a guided internet-delivered ACT intervention for persons with chronic pain. A total of 76 patients with chronic pain were included in the study and randomized to either treatment for 7 weeks or to a control group that participated in a moderated online discussion forum. Intent-to-treat analyses showed significant increases regarding activity engagement and pain willingness. Measurements were provided with the primary outcome variable Chronic Pain Acceptance Questionnaire which was in favour of the treatment group. Reductions were found on other measures of pain-related distress, anxiety and depressive symptoms. A six month follow-up showed maintenance of improvements. We conclude that an acceptance based internet-delivered treatment can be effective for persons with chronic pain.

Willing and Able: A Closer Look at Pain Willingness and Activity Engagement on the Chronic Pain Acceptance Questionnaire (CPAQ-8)

An 8-item version of the Chronic Pain Acceptance Questionnaire (CPAQ-8) has recently been proposed and validated. The aims of this study were to further investigate the reliability and validity of the CPAQ-8 in a new sample. Questionnaires were completed by 550 people with chronic pain (478 online survey, 72 paper survey). A demographic and pain history questionnaire was administered along with the CPAQ-8 and measures of pain self-efficacy, pain catastrophizing, psychological flexibility in pain, anxiety, and mood. In addition, 105 respondents completed the CPAQ-8 within 6 weeks to provide test-retest reliability data. The 2-factor structure of the CPAQ-8 (Activity Engagement [AE] and Pain Willingness [PW]) was confirmed and had reasonable-to-good scale score reliability and test-retest reliability. Pain acceptance as measured by the CPAQ-8 was associated with less depression, anxiety, pain interference, fear of reinjury, pain catastrophizing, and psychological inflexibility in pain, and higher levels of satisfaction with life, pain self-efficacy, and general acceptance. Furthermore, pain acceptance fully mediated the relationship between reported pain severity and emotional distress (anxiety and depression) and partially mediated the relationship between pain severity and pain interference in a structural equation model. The test-retest reliability after 4 to 6 weeks ranged from .68 for PW to .86 for AE; the overall score correlation was .81. We conclude that the CPAQ-8 is a reliable and valid measure of pain acceptance and that the 2 subscales of the measure each make an individual contribution to the prediction of adjustment in people with chronic pain. PerspectiveThe present study provides further evidence for the reliability and validity of the CPAQ-8. Support was found for the 2 related subscales, PW and AE, which appear to work in synergy to influence levels of pain interference and emotional distress in people living with chronic pain.

Developing a chronic pain self-management clinic at the British School of Osteopathy: Quantitative pilot study results

BackgroundStill's maxim ‘Find it, fix it and leave it alone’ is relevant for acute pain but osteopaths can feel challenged when managing chronic conditions unlikely to resolve with manual therapy alone. Research indicates that Mindfulness and Acceptance-based approaches, part of 3rd wave Cognitive Behavioural Therapy (CBT), are effective in addressing negative beliefs which maintain fear-avoidance behaviour and pain-related disability, improving outcomes by developing flexible responses to pain and enhancing patients' capacity to live more fully in accordance with personal values. Common ground between osteopathic concepts of function and ‘functional contextualism’ in CBT provided a rationale for developing a new osteopathic approach to chronic pain management and this study evaluated outcomes from a six week Acceptance-based course for patients at the British School of Osteopathy (BSO) Clinic. MethodsA mixed-methods pilot study with a purposive sample of patients with pain for more than 6 months. Participants were identified by osteopaths as likely to benefit from pain management support, recruitment interviews explored scope for change and decisions about joining the course were collaborative. 2 patients decided not to join, 2 dropped out through ill-health and 15 completed the course (4 male, 11 female). Participants attended group sessions for 2 h per week for 6 weeks, facilitated by a clinical health psychologist and an osteopath. Data was collected at course start, end, and 3 month follow-up from semi-structured interviews and the Chronic Pain Acceptance (CPAQ), Chronic Pain Values Inventory (CPVI), Bournemouth (BQ) and WHO Quality of Life questionnaires. Results132 questionnaires were returned (73% response rate). CPAQ scores improved significantly by 3 months for Activity (Z = −2.38, p = 0.02) but not Willingness (Z = −1.68, p = 0.09). Differences between ‘importance’ and ‘success’ in CPVI Relationships scores decreased significantly (Z = −2.12, p = 0.03), indicating increased success living in accordance with family, friends and relationship values, but not in Agency scores for work, health and growth values (Z = −1.75, p = 0.08). BQ scores improved at 6 weeks but returned to previous levels by 3 months (Z = −1.40, p = 0.16) and Quality of Life remained stable. Individual participants with high initial BQ scores reported less fear-avoidance behaviour at 3 months; those with low CPAQ scores showed higher levels of acceptance and activity; but participants with poor scores in both areas showed less overall change. ConclusionsParticipants showed improvements in motivation and ability to engage in valued activities and personal relationships, but not in pain willingness, fear-avoidance or work activity. The lack of a control group and small, purposive sample mean these results should be interpreted cautiously and interview data is being analysed to explore individual experiences and outcomes. A new clinic is being developed to integrate psycho-educational material into osteopathic treatment sessions, as these results indicate that Mindfulness and Acceptance-based approaches offer promising new directions for enhancing function and agency in chronic pain patients who cannot be ‘fixed’ by manual therapy alone.

Pain acceptance, psychological functioning, and self-regulatory fatigue in temporomandibular disorder.

A growing body of evidence suggests that chronic pain patients suffer from chronic self-regulatory fatigue: difficulty controlling thoughts, emotions, and behavior. Pain acceptance, which involves responding to pain and related experiences without attempts to control or avoid them (pain willingness), and pursuit of valued life activities regardless of pain (activity engagement) has been associated with various favorable outcomes in chronic pain patients, including better psychological functioning. The study presented here tested the hypotheses that pain acceptance is associated with less psychological distress, higher psychological well-being, and reduced self-regulatory fatigue in temporomandibular disorder (TMD) patients, particularly for those with longer pain duration. Cross-sectional data were provided by 135 TMD patients during an initial evaluation at a university-based tertiary orofacial pain clinic. Results of hierarchical linear regression models indicated that, controlling for pain severity, pain willingness is associated with less psychological distress and lower self-regulatory fatigue, and activity engagement is associated with greater psychological well-being. Furthermore, the effect of pain willingness on psychological distress was moderated by pain duration such that pain willingness was more strongly associated with less psychological distress in patients with longer pain duration; this moderating effect was fully mediated by self-regulatory fatigue. These findings suggest pain willingness may buffer against self-regulatory fatigue in those with longer pain duration, and such conservation of self-regulatory resources may protect against psychological symptoms.

Acceptance of pain in neurological disorders: Associations with functioning and psychosocial well-being.

Chronic pain acceptance has been shown to be related to positive adjustment to chronic pain in patients presenting with pain as a primary problem. However, the role of pain acceptance in adjustment to chronic pain secondary to a neurological disorder that is often associated with physical disability has not been determined. The purpose of this study was to examine whether two domains of chronic pain acceptance--activity engagement and pain willingness--predict adjustment to pain, controlling for pain intensity and key demographic and clinical variables in individuals with muscular dystrophy (MD), multiple sclerosis (MS), post-polio syndrome (PPS), or spinal cord injury (SCI). Participants were 508 community-dwelling adults with a diagnosis of MD, MS, PPS, or SCI who also endorsed a chronic pain problem. Participants completed self-report measures of pain acceptance, quality of life, pain interference, pain intensity, depression, and social role satisfaction. Hierarchical linear regressions indicated that activity engagement predicted lower pain interference and depression, and greater quality of life and social role satisfaction. Pain willingness predicted less pain interference and depression. Together, the two pain acceptance subscales accounted for more variance in outcomes than did self-reported pain intensity. Findings correspond with the broader pain acceptance literature, although activity engagement appears to be a more robust predictor of adjustment than does pain willingness. This research supports the need for future studies to determine the extent to which treatments that increase acceptance result in positive outcomes in persons with chronic pain secondary to neurological disorders.

Pain coping and acceptance as longitudinal predictors of health‐related quality of life among people with haemophilia‐related joint pain

Interventions based on coping and acceptance can be adapted for people with different painful conditions. Evidence about baseline characteristics that predict improved outcomes is informative for matching people to interventions, whereas evidence about changes that predict improved outcomes is informative about the processes that interventions should target. Participants in a low-intensity programme to promote self-management of haemophilia-related chronic joint pain (n = 101) reported pain intensity, coping, acceptance and quality of life at baseline and 6-month follow-up. Baseline and change measures of pain intensity, coping and acceptance were used to predict follow-up quality of life, taking account of baseline quality of life. Changed (reduced) pain intensity predicted better physical quality of life, independently of age, haemophilia severity, baseline pain intensity and baseline physical quality of life. Lower baseline passive coping and changed (increased) pain acceptance predicted better mental quality of life, independently of age, severity and baseline mental quality of life. Increased activity engagement but not pain willingness predicted better mental quality of life when pain acceptance was decomposed. Changed (reduced) negative thoughts also predicted better mental quality of life when separate acceptance subscales were used. Active pain coping did not predict physical or mental quality of life. Initially high levels of passive coping may be an obstacle to improving mental quality of life. Acceptance rather than coping may be a more useful behavioural change target, but more research is needed about the meanings and therapeutic implications of different elements of pain acceptance.

Validation of the Chronic Pain Acceptance Questionnaire-8 in an Australian Pain Clinic Sample

Recently, an 8-item short-form version of the Chronic Pain Acceptance Questionnaire (CPAQ-8) was developed predominantly in an internet sample. Further investigation of the factor structure in a multidisciplinary pain clinic sample is required. Investigation of the concurrent validity of the CPAQ-8 after accounting for the effects of variables commonly measured in the pain clinic setting is also necessary. This study examines the factor structure and concurrent validity of the CPAQ-8 in a sample of treatment-seeking patients who attended a multidisciplinary pain clinic. Participants were 334 patients who attended an Australian multidisciplinary pain service. Participants completed the CPAQ, a demographic questionnaire, and measures of patient adjustment and functioning. Confirmatory factor analysis identified a two-factor 8-item model consisting of Activity Engagement and Pain Willingness factors (SRMR = 0.039, RMSEA = 0.063, CFI = 0.973, TLI = 0.960) was superior to both the CPAQ and CPAQ with an item removed. The CPAQ and CPAQ-8 total scores were highly correlated (r = 0.93). After accounting for pain intensity, the CPAQ-8 was a significant predictor of depression, anxiety, stress, and disability. The subscales of the CPAQ-8 were both unique contributors to depression and disability in regression analyses, after accounting for pain intensity and kinesiophobia, and after accounting for pain intensity and catastrophizing. The CPAQ-8 has a sound factor structure and similar psychometric properties to the CPAQ; it may have clinical utility as a measure of pain acceptance in treatment-seeking, chronic pain patients.