Scandinavian Journal of Pain最新文献

Objectives: The aim of this study is to compare the use of pain coping strategies and pain catastrophizing in youth with and without cerebral palsy (CP), and to examine how these two groups differ with respect to the associations between pain coping, catastrophizing, and measures of psychological function and sleep disturbance.

Methods: Twenty-seven individuals with CP and 49 healthy controls aged 15-22 were included in this cross-sectional observational study. Pain was assessed using a semi-structured interviews and participants completed measures of pain coping, pain catastrophizing, psychological function, and sleep.

Results: Youth with CP used information seeking and problem solving (p = 0.003, Cohen's d (d) = -0.80) and sought social support (p = 0.044, d = -0.51) less often, and used internalizing as a coping strategy more often (p = 0.045, d = 0.59) than healthy controls. The use of information seeking and problem solving correlated more strongly with measures of depression (p = 0.023, Cohen's f (f) = 0.08) and sleep disturbance (p = 0.022, f = 0.08), while behavioral distraction correlated more strongly with measures of anxiety (p = 0.006, f = 0.11) and sleep disturbance (p = 0.017, f = 0.09) in youth with CP, compared to healthy controls.

Conclusions: The study findings raise the possibility that youth with CP may benefit more in terms of psychological function and sleep quality from coping training interventions that focus on behavioral distraction, information seeking, and problem solving. Research to test these ideas in additional samples of youth with CP is warranted.

Objectives: Overactivity is a characteristic of individuals with chronic pain. Previous cross-sectional studies demonstrated a relationship between perfectionism and overactivity. Therefore, the present study used a longitudinal design to determine whether pain severity and pain interference were exacerbated by overactivity and whether overactivity was exacerbated by perfectionism.

Methods: Participants with chronic pain were recruited using crowdsourcing. The participants completed the questionnaires at three time points: T1, T2, and T3 (September, October, and November 2021, respectively). The questionnaire assessed overactivity, perfectionistic strivings, perfectionistic concerns, pain severity, and pain interference. We created cross-lagged panel models to examine the hypothesized relationships among pain, overactivity, and perfectionism.

Results: After excluding ineligible participants and invalid response sets, we analyzed the questionnaires completed by 666 participants at T1, 560 at T2, and 554 at T3. The average duration of chronic pain at T1 was 36.35 ± 53.53 months. Perfectionistic strivings were partially linked to overactivity, and pain interference was partially related to overactivity. Contrary to our expectations, overactivity did not predict pain severity or pain interference.

Conclusions: The hypotheses that perfectionism exacerbates overactivity and that overactivity exacerbates pain severity and pain interference were not supported. These results may have been affected by the quality of the assessment of overactivity. Therefore, further research with a refined evaluation of overactivity is required.

Objectives: Measuring pain self-efficacy is suggested as relevant in patients with musculoskeletal disorders (MSDs) in a primary care setting. However, there is no pain self-efficacy questionnaire (PSEQ) available in Swedish. The aim of this study was to translate and culturally adapt PSEQ-2 to Swedish and evaluate reliability and validity in a population of patients with MSDs.

Methods: A translation and cultural adaptation together with psychometric evaluation of reliability and validity were performed according to guidelines with three groups of participants with MSDs. First, a convenient sample of 25 individuals were interviewed in the translation process. Next, 61 participants completed the test-retest survey via social media or QR codes in waiting rooms in rehabilitation clinics. Finally, to evaluate construct validity questionnaires were obtained from 132 participants with MSDs in an ongoing randomized controlled trial.

Results: The Swedish version of PSEQ-2 showed adequate face and content validity. The results of 0.805 on Cohen's weighted kappa indicate that the reliability of PSEQ-2SV in a group of adults with MSDs is on the border between substantial and almost perfect. The point estimate regarding relative rank variance, measuring the individual variation within the group, and relative concentration, the systematic change in how the assessments are concentrated on the scale's categories, shows minor systematic differences and some random differences not neglectable. The construct validity of pre-defined hypotheses was met to some degree.

Conclusion: The PSEQ-2SV has been accurately linguistically translated and tested for reliability and validity, in a population of MSDs, and is deemed to be able to be used in the clinic and in research. As there were some concerns regarding measurement error and systematic bias, more research could be of value.

Objectives: Pain management is critical for nurses; therefore, knowledge assessment is also critical. The Knowledge and Attitudes Survey Regarding Pain (KASRP), designed for testing pain management knowledge among nurses, finds widespread use internationally; yet, key validity evidence according to American Psychological Association standards is missing. Therefore, this study aimed to translate and test the psychometric traits of KASRP based on an item response theory model.

Methods: Cronbach's α was included to assess internal consistency, and the Kolmogorov-Smirnov test was included to assess the total score normal distribution goodness of fit. KASRP was tested using the Kaiser-Meyer-Olkin (KMO) test for sphericity to examine its suitability for factor analysis and exploratory factor analysis to examine construct evidence. The Kruskal-Wallis H test was used to assess discriminant evidence. The correlation between KASRP and the Brockopp-Warden Pain Knowledge Questionnaire (BWPKQ) was included as a measure of convergent validity evidence, and correlation with self-assessed knowledge was tested as a divergent validity measure.

Results: The questionnaire was translated using back-forth and parallel translation. The KMO test for sphericity was 0.49 for all items and 0.53 for the adjusted scale without items 30, 33, and 36, with factor analysis explaining 70.42% of the variation suggesting unacceptable construct validity evidence. Cronbach's α was 0.75, suggesting acceptable reliability evidence; the Kolmogorov-Smirnov test revealed an insignificant skewness of -0.195 and a kurtosis of 0.001, while the Kruskal-Wallis H test revealed a significance of p < 0.001. The correlation between KASRP and the BWPKQ was 0.69 (p = 0.0001), suggesting acceptable convergent validity evidence. A correlation between KASRP and self-assessed knowledge of -0.59 was also found, which suggests acceptable divergent validity evidence.

Conclusions: The translated KASRP passed six out of seven tests based on the given sample.

Objectives: Cancer-related pain (CRP) is among the most frequent collateral effects of cancer, with chronic CRP, lasting at least 3 months, affecting >40% of cancer survivors. Evidence-based treatments, including pain-focused cognitive behavioral therapy (CBT), are available, but it appears that cancer patients/survivors are often poorly informed about CRP or the potential benefits of CBT for such pain. This study examined current experience of Swedish cancer patients/survivors in relation to CRP.

Methods: Participants (N = 276; 83% female; mean age = 55.5 years, SD = 11.9) were recruited to an online survey via cancer websites in Sweden, and they provided information about their history of chronic CRP and whether they received information about or treatment for CRP from a healthcare professional.

Results: Participants had a history of breast (36%), gynecological (12%), lung (10%), colon (8%), and other forms of cancer (36%). A majority (74%) reported a history of chronic CRP and being prescribed analgesic medications (70%). Less than half (47%) received information from their healthcare provider about the risk of CRP and only 13% with chronic CRP received psychological treatment, and of these, only 33% received CBT. Among those receiving psychological treatment for chronic CRP, satisfaction rates were moderate, reported as an average of 6 on a 0-10 scale (standard deviation 2.6).

Conclusions: Greater efforts are needed to raise awareness among cancer patients/survivors and healthcare providers about the risk of CRP and evidence-based interventions, including CBT, the first-line intervention for chronic pain. These efforts will need to be matched with increases in treatment capacity, particularly pain-focused CBT.

Objectives: Management of patients with chronic musculoskeletal pain (CMP) remains a challenge in general practice. The general practitioner (GP) often experiences diagnostic uncertainty despite frequently referring patients with CMP to specialized departments. Therefore, it remains imperative to gain insights on how to optimize and reframe the current setup for the management of patients with CMP. The objective was to explore GP's perspectives on the challenges, needs, and visions for improving the management of patients with CMP.

Methods: A qualitative study with co-design using the future workshop approach. Eight GPs participated in the future workshop (five females). Insights and visions emerged from the GP's discussions and sharing of their experiences in managing patients with CMP. The audio-recorded data were subjected to thematic text analysis.

Results: The thematic analysis revealed four main themes, including (1) challenges with current pain management, (2) barriers to pain management, (3) the need for a biopsychosocial perspective, and (4) solutions and visions. All challenges are related to the complexity and diagnostic uncertainty for this patient population. GPs experienced that the patients' biomedical understanding of their pain was a barrier for management and underlined the need for a biopsychosocial approach when managing the patients. The GPs described taking on the role of coordinators for their patients with CMP but could feel ill-equipped to handle diagnostic uncertainty. An interdisciplinary unit was recommended as a possible solution to introduce a biopsychosocial approach for the examination, diagnosis, and management of the patient's CMP.

Conclusions: The complexity and diagnostic uncertainty of patients with CMP warrants a revision of the current setup. Establishing an interdisciplinary unit using a biopsychosocial approach was recommended as an option to improve the current management for patients with CMP.

Objectives: Pain catastrophizing in the aging population has not been studied in great detail. Existing investigations have reported conflicting results on the effects of age on pain catastrophizing in relation to pain responses. This study investigated the relationship between pain catastrophizing, and its individual components (rumination, magnification, and helplessness), and the responses to standardized experimental pain stimuli in old and young, healthy adults.

Methods: Sixty-six volunteers (32 old: 65-87, 18 females; 34 young: 20-35, 17 females) participated in the study. Pain catastrophizing including the components of rumination, magnification, and helplessness was assessed with the pain catastrophizing scale (PCS). Experimental pain was induced by applying predefined pressure stimulations to the trapezius muscle. Pain intensity and unpleasantness were assessed using numerical rating scales. Pain catastrophizing levels and pain responses were statistically compared between the two age groups.

Results: Elderly individuals reported significantly (p = 0.028) lower scores of pain catastrophizing (Med = 5; interquartile range [IQR] = 14) than younger individuals; this difference was driven by the significantly lower components of rumination (Med = 2; IQR = 4; p = 0.017) and helplessness (Med = 2; IQR = 7; p = 0.049). A larger proportion of young (57.8%) rated pain catastrophizing at high levels, with scores above the 75th percentile (Med = 20). Additionally, elderly reported the lowest pain intensity (Med = 5; p = 0.034) and pain unpleasantness (Med = 4.5; p = 0.011) responses to the experimental pressure stimuli. In the elderly group, pain unpleasantness was positively and significantly associated with pain catastrophizing (r _s = 0.416, p = 0.021), rumination (r _s = 0.42, p = 0.019), and helplessness (r _s = 0.434, p = 0.015), respectively. No associations were found in the young group.

Conclusions: Elderly reported lower PCSs than young adults. Rumination and helplessness were reduced in the elderly group. The elderly population showed positive correlations between catastrophizing levels and pain unpleasantness to standardized pressure pain stimuli. Results supported the view that elderly possess resilience over specific domains of pain catastrophizing that could counteract pain perception due to physiological decline.

Objective: The aim of this study was to validate the Neuropathic Pain for Post-Surgical Patients (NeuPPS) scale against clinically verified neuropathic pain (NP) by quantitative sensory testing (QST) as well as evaluation of other psychometric properties. The NeuPPS is a validated 5-item scale designed to evaluate NP in surgical populations.

Methods: Data from 537 women aged >18 years scheduled for primary breast cancer surgery enrolled in a previous study for assessing risk factors for persistent pain after breast cancer treatment were used. Exclusion criteria were any other breast surgery or relevant comorbidity. A total of 448 eligible questionnaires were available at 6 months and 455 at 12 months. At 12 months, 290 patients completed a clinical examination and QST. NeuPPS and PainDETECT were analyzed against patients with and without clinically verified NP. NP was assessed using a standardized QST protocol including a clinical assessment. Furthermore, the NeuPPS and PainDETECT scores were psychometrically tested with an item response theory method, the Rasch analysis, to assess construct validity. Primary outcomes were the diagnostic accuracy measures for the NeuPPS, and secondary measures were psychometric analyses of the NeuPPS after 6 and 12 months. PainDETECT was also compared to clinically verified NP as well as NeuPPS comparing the stability of the estimates.

Results: Comparing the NeuPPS scores with verified NP using a receiver operating characteristic curve, the NeuPPS had an area under the curve of 0.80. Using a cutoff of 1, the NeuPPS had a sensitivity of 88% and a specificity of 59%, and using a cutoff of 3, the values were 35 and 96%, respectively. Analysis of the PainDETECT indicated that the used cutoffs may be inappropriate in a surgical population.

Conclusion: The present study supports the validity of the NeuPPS as a screening tool for NP in a surgical population.

Objectives: Chronic postsurgical pain (CPSP) is a common postoperative sequela. Despite the increasing popularity of cosmetic surgeries, there is a notable lack of research on CPSP in this context, with existing studies focusing on breast surgeries only. To address existing gaps in knowledge, the objective of the present study was to investigate the self-reported prevalence of cosmetic surgery and associated CPSP among Norwegian adults.

Methods: An online questionnaire consisting of three questions inquiring prior cosmetic surgeries, associated CPSP, and whether participants had sought for pain management was constructed and distributed among adults residing in Norway.

Results: Between November 30, 2022 and December 16, 2022, 1,746 participants were recruited. 10% of respondents, 73.3% of which were female, affirmed to have undergone cosmetic surgery. About 1 in 4 of these was aged 18-29 years. The prevalence of CPSP was 12.6%. CPSP was five times more common among male, compared to female respondents. While about two thirds of participants indicating to have experienced CPSP were aged 18-29 years, CPSP was much less common among individuals of other ages.

Conclusion: Consistent with international trends, there appears to be a young and growing population of cosmetic surgery consumers in Norway. According to our results, about 1 in 8 of these might be affected by CPSP, a condition that is notoriously hard to treat and weighting heavily on public healthcare and social welfare systems. Large-scale longitudinal studies further investigating the topic are thus urgently needed.

Background: Generative artificial intelligence (AI) models offer potential assistance in pain research data acquisition, yet concerns persist regarding data accuracy and reliability. In a comparative study, we evaluated open generative AI models' capacity to acquire data on acute pain in rock climbers comparable to field research.

Methods: Fifty-two rock climbers (33 m/19 f; age 29.0 [24.0-35.75] years) were asked to report pain location and intensity during a single climbing session. Five generative pretrained transformer models were tasked with responses to the same questions.

Results: Climbers identified the back of the forearm (19.2%) and toes (17.3%) as primary pain sites, with reported median pain intensity at 4 [3-5] and median maximum pain intensity at 7 [5-8]. Conversely, AI models yielded divergent findings, indicating fingers, hands, shoulders, legs, and feet as primary pain localizations with average and maximum pain intensity ranging from 3 to 4.4 and 5 to 10, respectively. Only two AI models provided references that were untraceable in PubMed and Google searches.

Conclusion: Our findings reveal that, currently, open generative AI models cannot match the quality of field-collected data on acute pain in rock climbers. Moreover, the models generated nonexistent references, raising concerns about their reliability.