Perspectives on the diagnosis and management of functional cognitive disorder: An international Delphi study.

BACKGROUND: Current proposed criteria for functional cognitive disorder (FCD) have not been externally validated. We sought to analyse the current perspectives of cognitive specialists in the diagnosis and management of FCD in comparison with neurodegenerative conditions. METHODS: International experts in cognitive disorders were invited to assess seven illustrative clinical vignettes containing history and bedside characteristics alone. Participants assigned a probable diagnosis and selected the appropriate investigation and treatment. Qualitative, quantitative and inter-rater agreement analyses were undertaken. RESULTS: Eighteen diagnostic terminologies were assigned by 45 cognitive experts from 12 countries with a median of 13 years of experience, across the seven scenarios. Accurate discrimination between FCD and neurodegeneration was observed, independently of background and years of experience: 100% of the neurodegenerative vignettes were correctly classified and 75%-88% of the FCD diagnoses were attributed to non-neurodegenerative causes. There was <50% agreement in the terminology used for FCD, in comparison with 87%-92% agreement for neurodegenerative syndromes. Blood tests and neuropsychological evaluation were the leading diagnostic modalities for FCD. Diagnostic communication, psychotherapy and psychiatry referral were the main suggested management strategies in FCD. CONCLUSIONS: Our study demonstrates the feasibility of distinguishing between FCD and neurodegeneration based on relevant patient characteristics and history details. These characteristics need further validation and operationalisation. Heterogeneous labelling and framing pose clinical and research challenges reflecting a lack of agreement in the field. Careful consideration of FCD diagnosis is advised, particularly in the presence of comorbidities. This study informs future research on diagnostic tools and evidence-based interventions.

Missingness mechanisms and generalizability of patient reported outcome measures in colorectal cancer survivors - assessing the reasonableness of the "missing completely at random" assumption.

BACKGROUND: Patient-Reported Outcome Measures (PROM) provide important information, however, missing PROM data threaten the interpretability and generalizability of findings by introducing potential bias. This study aims to provide insight into missingness mechanisms and inform future researchers on generalizability and possible methodological solutions to overcome missing PROM data problems during data collection and statistical analyses. METHODS: We identified 10,236 colorectal cancer survivors (CRCs) above 18y, diagnosed between 2014 and 2018 through the Danish Clinical Registries. We invited a random 20% (2,097) to participate in a national survey in May 2023. We distributed reminder e-mails at day 10 and day 20, and compared Initial Responders (response day 0-9), Subsequent Responders (response day 10-28) and Non-responders (no response after 28 days) in demographic and cancer-related characteristics and PROM-scores using linear regression. RESULTS: Of the 2,097 CRCs, 1,188 responded (57%). Of these, 142 (7%) were excluded leaving 1,955 eligible CRCs. 628 (32%) were categorized as initial responders, 418 (21%) as subsequent responders, and 909 (47%) as non-responders. Differences in demographic and cancer-related characteristics between the three groups were minor and PROM-scores only marginally differed between initial and subsequent responders. CONCLUSION: In this study of long-term colorectal cancer survivors, we showed that initial responders, subsequent responders, and non-responders exhibit comparable demographic and cancer-related characteristics. Among respondents, Patient-Reported Outcome Measures were also similar, indicating generalizability. Assuming Patient-Reported Outcome Measures of subsequent responders represent answers by the non-responders (would they be available), it may be reasonable to judge the missingness mechanism as Missing Completely At Random.

Exploring the course of functional somatic symptoms (FSS) from pre- to late adolescence and associated internalizing psychopathology - an observational cohort-study.

BACKGROUND: Functional somatic symptoms (FSS), which commonly cannot be attributed to well-defined organic pathology, often co-occur with internalizing psychopathology and fluctuate throughout different life stages. We examined FSS courses throughout adolescence, and the association between preadolescent FSS, FSS severity and internalizing psychopathology at late adolescence. METHODS: Data from the Copenhagen Child Cohort (CCC2000) were utilized from assessments at ages 11-12 years (preadolescence; T0) and 16-17 years (late adolescence; T1). Self-report questionnaire and interview data on FSS, internalizing psychopathology, chronic medical conditions, and sociodemographic data from Danish national registers were available for 1285 youths. FSS courses were categorized into persistent (high FSS at T0 & T1), remission (high FSS only at T0), incident (high FSS only at T1) or no FSS (no FSS at T0 & T1). Multiple linear and multinomial logistic regressions were conducted to investigate the FSS/psychopathology association. RESULTS: 1.8% of adolescents fell into the persistent FSS course group throughout adolescence. Higher preadolescent FSS predicted FSS (b = 0.07, p < .001), anxiety (b = 0.05, p < .001) and depression (b = 0.06, p < .001) at age 16/17, even after controlling for sex, parental education, a chronic medical condition and internalizing psychopathology in preadolescence. Persistent, incident, and remittent FSS courses were associated with significantly higher mean levels of anxiety and depression compared to the reference group (no FSS). CONCLUSIONS: FSS during pre- and late adolescence might increase and co-occur with anxiety and depression throughout adolescence, potentially due to shared underlying risk factors and processes.

Participatory design of bodysymptoms.org: An interactive web resource to explain multisystem functional somatic symptoms.

OBJECTIVE: There is a lack of trustworthy information about Functional Somatic Symptoms (FSS) on the internet. This means integrative bio-psycho-social explanations of FSS and related health advice are not readily available to the public. To explore and address this problem, we carried out the bodysymptoms project, with the aim to build a website which presents current widely accepted explanations for FSS and shows how different explanations are inter-connected. METHODS: Bodysymptoms was set up as a research-in-action project with a diverse range of international stakeholder-participants, combining approaches from patient and public involvement in healthcare with participatory design. 7 participants with lived experience of multi-system functional symptoms took part in the project and measures of meaningful engagement throughout the project were rated highly. This manuscript describes the methodology by which the website was developed. RESULTS: Through iterative cycles we determined the requirements for an interactive explanatory model and co-created a novel online health interactive resource with integrated actionable health advice. The target end user are young adults with persistent physical symptoms, maintained by functional mechanisms. The overall aim is to empower people at risk of developing functional disorders to seek better health outcomes. The website is intended to be used prior to or alongside engagement with healthcare. CONCLUSION: Bringing lived experience and multi-disciplinary perspectives into dialogue through participatory design can harness the power of research to create immediate shared value. This project has resulted in a usable open access website, bodysymptoms.org, which provides education about FSS for patients, healthcare professionals and members of the public looking to understand FSS.

Competence-Based Trainings for Psychological Treatments - A Transtheoretical Perspective.

Background: Although in most countries psychotherapy trainings focus on one treatment orientation, such an approach is associated with systematic shortcomings. The priorities from teaching one theoretical framework should be moved to a more rigorous orientation in science and evidence-based practice, and to the needs of patients, even if strategies of different theoretical approaches need to be combined. Method: We discuss whether competence-based trainings in psychological treatments offer a better framework to facilitate the progress of psychological treatments to a professional academic discipline with transtheoretical exchange, and we provide an example of a transtheoretical education in the basic competences of psychological treatments. A transtheoretical education program requires an umbrella model for case formulation and a transtheoretical definition of intervention goals. Results: We provide an adaptation of the traditional model distinguishing vulnerability/resilience, exacerbation, and maintenance of clinical problems for case conceptualization. Dynamic network models offer a further perspective for developing modern, transtheoretical case formulations. Treatment methods should be better classified according to their transtheoretical goals, which offers opportunities to better compare or combine them. We report a case example of how to transform a general competence-based approach in the training of psychological treatments in the academic education system, which found exceptional acceptance from participating students. Conclusion: Thus, a rigorous competence-based approach to training early clinicians in applying psychological treatments helps to bridge the artificial divide between psychotherapeutic traditions. It also supports the evolution of psychological treatments into an academically robust and highly professional, integrative discipline.

Neuroticism, perceived stress, adverse life events and self-efficacy as predictors of the development of functional somatic disorders: longitudinal population-based study (DanFunD).

BACKGROUND: Functional somatic disorder (FSD) is a unifying diagnosis that includes functional somatic syndromes such as irritable bowel, chronic widespread pain (CWP) and chronic fatigue. Several psychological factors are associated with FSD. However, longitudinal population-based studies elucidating the causal relationship are scarce. AIMS: To explore if neuroticism, perceived stress, adverse life events (ALEs) and self-efficacy can predict the development of FSD over a 5-year period. METHOD: A total of 4288 individuals who participated in the DanFunD baseline and 5-year follow-up investigations were included. FSD was established at both baseline and follow-up, with symptom questionnaires and diagnostic interviews. Neuroticism was measured with the short-form NEO Personality Inventory, perceived stress with the Cohen's Perceived Stress Scale, ALEs with the Danish version of the Cumulative Lifetime Adversity Measure and self-efficacy with the General Self-Efficacy Scale. Associations were investigated with multiple logistic regression models. RESULTS: Perceived stress predicted incident FSD, irritable bowel, CWP and chronic fatigue (odds ratios: 1.04-1.17). Neuroticism predicted incident FSD and chronic fatigue (odds ratios: 1.03-1.16). ALEs predicted incident FSD, CWP and chronic fatigue (odds ratios: 1.06-1.18). An increase in perceived stress from baseline to follow-up was associated with incident FSD, irritable bowel, CWP and chronic fatigue (odds ratios: 1.05-1.22). Contrary, an increase in self-efficacy seemed to be a protective factor (odds ratios: 0.89-0.99). CONCLUSIONS: High neuroticism, high perceived stress and a high number of ALEs are risk factors for the development of FSD. Particularly perceived stress seems to be an important contributor to the onset of FSD.

Family healthcare patterns as a proxy for transgenerational transmission of functional somatic symptoms in early childhood - A longitudinal cohort study.

OBJECTIVE: Functional somatic symptoms (FSS) accumulate within families. Exposure to family patterns of high healthcare use may induce maladaptive symptom coping and thereby potentially contribute to the transgenerational transmission of FSS. This study aimed to uncover associations between parental and child healthcare use during the child's first years of life (age 0-4) and childhood FSS at age 5-7. METHODS: We utilized data from the Copenhagen Child Cohort (CCC2000), a population-based birth cohort. Parent-reported FSS of their 5-7-year-old children were linked to Danish national registry data on parental and child healthcare use (including general practitioner [GP] consultations and hospital contacts) during child age 0-4 years. Logistic regression analyses were performed to investigate longitudinal associations between family healthcare use and child FSS. RESULTS: We found an association between prior parental healthcare use and child FSS at age 5-7 (OR = 1.02, 95% CI [1.01-1.04]). Key sensitivity analyses specifically focusing on GP consultations, revealed modest but statistically significant associations between parental (OR = 1.03, 95% CI [1.02-1.05]) and child (OR = 1.18, 95% CI [1.04-1.34]) GP consultations and impairing FSS at age 5-7. CONCLUSION: Family healthcare use, especially within the general practice, may play a role in the transgenerational transmission of FSS. Early-stage FSS identification and care might be improved through training aimed at GPs. Future research may identify vulnerable families at whom parent-focused interventions for symptom-coping could be targeted. This could potentially contribute to the prevention of transgenerational transmission of FSS.

Preventing medication nonadherence: a framework for interventions to support early engagement with treatment.

ABSTRACTMedication nonadherence is common and results in avoidable morbidity, mortality, and burdens on healthcare systems. This paper proposes a preventative approach to medication nonadherence. We consider existing evidence on the prevalence and determinants of nonadherence early in a patient's medication-taking journey, and map these to potential opportunities for intervention. Many patients stop taking a new medication soon after they are prescribed it, often not collecting the medication. Early patterns of nonadherence are linked to later nonadherence via processes such as habit formation and symptom experiences. Known predictors of nonadherence may be present before someone starts a new treatment, when patients experience disruption to their lives and identity due to illness. Healthcare professionals typically have contact with patients around this time. We argue that it may be possible to prevent medication nonadherence: at the population level; by optimising the prescription process; and through low- and high-intensity interventions for patients with identified early barriers. We give examples of specific interventions and tools that might be needed to operationalise this approach in practice and propose new directions for research to promote early engagement with medication to prevent nonadherence.

Translation and examination of construct validity of the Danish version of the Tampa Scale for Kinesiophobia.

OBJECTIVES: This study investigates the construct validity of the Danish Tampa Scale for Kinesiophobia (TSK). METHODS: The English 17-item scale was translated into Danish adhering to WHO's guidelines. The construct validity of the TSK was examined in a random general population sample of 4,884 18- to 72-year olds with pain within the past 4 weeks. Examination of construct validity adhered to the COSMIN checklist. Structural validity was examined by splitting the sample and conducting exploratory factor analysis on one half and confirmatory factor analysis on the other half. Convergent validity was examined through associations with self-report measures and objective physical performance tests. Reference scores for the TSK were calculated. RESULTS: After translation, all respondents felt confident that they understood the meaning of the items. All but one found the questionnaire acceptable. The exploratory factor analysis suggested that a 1-factor 13-item version without 4 reversed items resulted in the most consistent fit across subgroups of gender, age, and severe pain report. Five different models of the TSK were tested in the confirmatory factor analysis. While none were excellent fits, both one- and two-factor models of the TSK-13 and TSK-11 were acceptable. Two-factor models marginally outperformed one-factor models on goodness of fit. There was no association between TSK scores and muscular fitness or self-reported physical activity. Cardiorespiratory fitness, self-perceived physical fitness, and self-efficacy had weak correlations with TSK scores. Scores showed modest associations with self-report measures of anxiety, illness worry, pain interference, and daily limitations. CONCLUSIONS: Based on an overall consideration of results, we recommend using the TSK-13 as a one-dimensional construct for both research and clinical purposes pending further examinations of the TSK in clinical samples. TSK scores from the present study can serve as a standard of reference for levels of Kinesiophobia in the general population.