Supporting friends and family of adults with a primary brain tumour: A systematic review

Co-Designing a User-Centered Digital Health Tool for Supportive Care Needs of Patients With Brain Tumors and Their Caregivers: Interview Analysis

Background

Brain tumors are characterized by the high burden of disease that profoundly impacts the quality of life in patients and their families. Digital health tools hold tremendous potential to enhance supportive care and quality of life for patients with brain tumors and their caregivers.

Objective

This study aims to generate ideas and concepts, through a co-design paradigm, to inform the development of a digital health tool to address the unmet needs of people affected by brain tumors.

Methods

Patients with brain tumors, caregivers, and health professionals from 2 large public tertiary hospitals in Victoria, Australia, were invited to complete a qualitative interview discussing their unmet needs of care. Overall, 35 qualitative interviews focusing on unmet needs and concepts for a digital health tool were conducted with 13 patients, 11 caregivers, and 11 health professionals. Interviews were audio recorded and transcribed, and a 5-step framework analysis approach was used to analyze data.

Results

Four themes of unmet supportive care needs emerged: (1) emotional and psychological, (2) information, (3) physical and practical, and (4) social connectedness. Participants expressed the desire for early and proactive mental health intervention, noted the importance of providing mental health support to caregivers, and emphasized the need for positive stories and affirmative language. From an information perspective, participants noted a sense of information overload, especially at the beginning. They also underscored the variety of information needed on an ongoing basis, including life after treatment, and comprehensive care assistance to maintain quality of life. Participants also described unmet supportive care needs relating to symptom burden, and practical and administrative support to facilitate the logistics of accessing treatment and accomplishing daily life tasks. Finally, they expressed the desire for greater social connectedness and safe spaces to engage with other people in a similar situation. Our findings are consistent with previous research on this subject and were integrated into the development of a web-based platform.

Conclusions

Participants' perspectives informed the development of content for a web-based digital health platform called "Brain Tumours Online." The platform comprises three pillars-(1) "LEARN": a repository of vetted information about a range of biomedical and psychosocial care topics; (2) "CONNECT": a digital peer support community with a health care professional interface; and (3) "TOOLBOX": an emerging library of validated digital therapeutics for symptom management.

What can we learn from the evidence of psychosocial support for carers of people with cancer and how do we advance our efforts? A meta-review study

PURPOSE

Literature concerning programmes to support the well-being of carers of cancer survivors is vast, complex, and difficult to navigate, posing difficulties for identifying and translating relevant evidence. This study will advance the field by mapping and synthesising reviews to address the question: "What psychosocial interventions are available to promote the well-being of carers for people diagnosed with cancer, as reported in the evidence from reviews?".

METHODS

A meta-review was conducted of reviews published between 2013 and 2024. PsycINFO, MEDLINE, CINAHL, and Cochrane Database of Systematic Reviews databases and relevant reference lists were searched for eligible reviews. Records were screened and assessed in accordance with the method with data from included reviews extracted and synthesised. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis guided reporting. Reviews were appraised using the JBI Critical Appraisal Checklist for Systematic Reviews and Research Syntheses.

RESULTS

Ultimately, 54 reviews met the inclusion criteria. This evidence was mapped regarding populations, interventions, and outcomes, including depression, anxiety, quality of life, and distress. On average, reviews addressed nine of 11 quality checklist items. Insights were gained concerning the role of theory, carer populations, and intervention characteristics.

CONCLUSION

Key features of the body of evidence were identified that can hinder progress and which point to ways forward. It is concluded that a recalibrated carer research agenda is needed, one that is designed to synthesise evidence concerning what works, for which carers to achieve what outcomes, or to address which kinds of psychosocial support needs.

IMPLICATIONS FOR CANCER SURVIVORS

Despite the need to ensure that carers have access to programs that support their wellbeing as they care for their loved ones, the evidence to guide program development is complex and difficult to navigate. A refocusing of research efforts is needed to advance understanding of what is most effective for carers, and how this can be translated into clinical practice.

Reporting standards in randomized controlled trials involving neuro-oncology caregivers: A systematic review report from the RANO-Cares working group

Background

Family caregivers in neuro-oncology (eg, spouse, family member, friend to a patient) have high unmet support needs, yet intervention trials and effective support options are scarce. The Response Assessment in Neuro-Oncology (RANO)-Cares working group investigated the methodological quality of neuro-oncology caregiver outcomes reporting in randomized controlled trials (RCTs).

Methods

A systematic review was performed to evaluate to what extent RCTs assessing outcomes of caregivers of adult primary brain tumor patients adhere to minimum reporting standards. A 33-item checklist (23 applicable to secondary analysis reports) based on the International Society for Quality of Life Research (ISOQOL) criteria for patient-reported outcome reporting was used. Risk of bias was assessed per RCT.

Results

Fifteen publications from 11 unique RCTs included 676 neuro-oncology caregivers, with low overall risk of bias. Ten publications (66%) reported on caregiver outcomes as a primary aim, of which 8 (80%) satisfied ≥2/3 of the key methodological criteria. Of the 5 secondary analysis reports (33%), 2 (40%) met ≥2/3 of applicable key criteria. Criteria often not reported adequately included sample size calculations (reported adequately in n = 8, 53%), participant flow (n = 9, 60%) window for data collection (n = 1, 6%), and extent of (n = 10, 66%), reasons for (n = 9, 60%), and statistical approaches in dealing with (n = 4, 26%) missing data.

Conclusions

Whilst there are opportunities to enhance reporting standards, RCTs that include neuro-oncology caregiver outcomes generally adhere to high-quality reporting standards and have low risk of bias, indicating good potential to impact clinical practice.

Symptom management in isocitrate dehydrogenase mutant glioma

According to the 2021 World Health Organization classification of CNS tumors, gliomas harboring a mutation in isocitrate dehydrogenase (mIDH) are considered a distinct disease entity, typically presenting in adult patients before the age of 50 years. Given their multiyear survival, patients with mIDH glioma are affected by tumor and treatment-related symptoms that can have a large impact on the daily life of both patients and their caregivers for an extended period of time. Selective oral inhibitors of mIDH enzymes have recently joined existing anticancer treatments, including resection, radiotherapy, and chemotherapy, as an additional targeted treatment modality. With new treatments that improve progression-free and possibly overall survival, preventing and addressing daily symptoms becomes even more clinically relevant. In this review we discuss the management of the most prevalent symptoms, including tumor-related epilepsy, cognitive dysfunction, mood disorders, and fatigue, in patients with mIDH glioma, and issues regarding patient's health-related quality of life and caregiver needs in the era of mIDH inhibitors. We provide recommendations for practicing healthcare professionals caring for patients who are eligible for treatment with mIDH inhibitors.

NeuroCARE: A Randomized Controlled Trial of a Psychological Intervention for Caregivers of Patients With Primary Malignant Brain Tumors

PURPOSE

Caregivers of patients with primary malignant brain tumors (PMBT) experience significant psychological distress. We assessed the effect of a psychological intervention (NeuroCARE) on anxiety symptoms among PMBT caregivers.

METHODS

We conducted a randomized trial of NeuroCARE versus usual care in PMBT caregivers with elevated anxiety (Generalized Anxiety Disorder-7 score ≥5) within 6 months of the patient's diagnosis. NeuroCARE was developed for PMBT caregivers and consists of six telehealth sessions with a behavioral health specialist. Participants completed surveys at baseline, 11-week (postintervention), and 16-week (1-month postintervention) time points. The primary outcome was 11-week anxiety symptoms (Hospital Anxiety and Depression Scale [HADS]-Anxiety Subscale). We also measured depression symptoms (HADS-Depression Subscale), quality of life (QOL; Caregiver QOL survey), caregiver burden (Caregiver Reaction Assessment), self-efficacy (Lewis Cancer Self-Efficacy Scale), coping (Measure of Current Status), and post-traumatic stress disorder (PTSD) symptoms (PTSD Checklist for DSM-5). We conducted analysis of covariance and linear mixed-effects regression analyses to examine intervention effects on study outcomes.

RESULTS

We enrolled 120 caregivers (60/group) between October 2019 and June 2022; 105 were evaluable for the primary outcome. At 11 weeks, NeuroCARE participants reported significantly lower anxiety symptoms than usual care participants (M, 8.87 v 10.69; P = .008). NeuroCARE caregivers also reported significantly lower depression symptoms (M, 6.08 v 7.77; P = .004), and better self-efficacy (M, 128.81 v 111.17; P < .001) and coping (M, 32.25 v 25.65; P < .001) at 11 weeks. Study groups did not differ significantly in 11-week QOL, caregiver burden, or PTSD symptoms. In longitudinal analyses, intervention effects on depression symptoms, self-efficacy, and coping were sustained.

CONCLUSION

A novel, population-specific psychological intervention led to improved anxiety and depression symptoms, self-efficacy, and coping among PMBT caregivers.

An Overview of Reviews on Predictors of Neurorehabilitation in Surgical or Non-Surgical Patients with Brain Tumours

(1) Background. People suffering from brain cancer, regardless of histological tumour characteristics, often experience motor disturbances, cognitive-behavioural difficulty, language impairments, and functional and social limitations. The current treatment approach entails surgery and adjuvant therapy such as chemotherapy and radiotherapy combined with intensive rehabilitation. The primary focus of rehabilitation is usually motor and functional recovery, without specifically addressing the patient's quality of life. The present systematic review identifies and evaluates the predictors of functional and cognitive rehabilitation outcomes and their influence on quality of life in adult patients with brain cancer. (2) Methods. Three electronic databases (PubMed, Elsevier, Cochrane) were searched for reviews about functional, cognitive, and quality-of-life outcomes in patients with central nervous system tumours, including articles published between January 2018 and May 2024. (3) Results. The search retrieved 399 records, 40 of which were reviewed. Five main areas of predictive factors were identified: diagnosis, therapy, complications, outcomes (in the motor, cognitive, and quality-of-life categories), and tailored rehabilitation. (4) Conclusions. These indicators may inform integrated care pathways for patients with primary central nervous system tumours.

'It was never about me': A qualitative inquiry into the experiences of psychological support and perceived support needs of family caregivers of people with high-grade glioma

BACKGROUND

Family caregivers of people with high-grade glioma often report high rates of psychological distress, which has been attributed to the unique aspects of the disease and onerous care demands. Clinical practice guidelines advocate for caregiver support from diagnosis through to end-of-life and bereavement. Yet, research has identified that caregivers' support needs are often overlooked.

AIM

To explore caregivers' experiences of psychological support and perceptions of what constitutes optimal psychological support for caregivers in the context of high-grade glioma.

DESIGN

Qualitative study involving semi-structured interviews with data analysed using reflexive thematic analysis.

SETTING/PARTICIPANTS

Eighteen current (n = 11) and bereaved (n = 7) family caregivers (73% female, aged 33-69 years) of adults with high-grade glioma participated. Interviews explored caregivers' perceptions of psychological support.

RESULTS

Two major themes were generated. The first theme, 'It was never about me', reflected caregivers prioritise for people with high-grade glioma to be well supported despite experiencing their own unmet psychological support needs. The second theme, 'Continuous, coordinated and personalised support', highlighted the importance of timely and tailored interventions addressing caregivers' practical, educational and emotional support needs throughout the illness journey.

CONCLUSIONS

Caregivers commonly prioritise the support needs of people with high-grade gliomas; yet, have their own distinct needs that vary throughout the illness. Primary care providers have a potential role in facilitating timely access to palliative care, practical support and brain tumour-specific psychological support to meet caregivers' diverse needs across the care continuum in the context of high-grade glioma.

The impact of a primary brain tumor diagnosis on caregivers: Insights from the patients' perspective

PURPOSE

The diagnosis of a primary brain tumor (PBT) causes significant distress for the caregiver-patient dyad, warranting increased supportive care intervention. Although researchers have previously assessed caregivers' perceptions of their own supportive care needs, no study to date has identified how patients perceive the caregiving experience and/or patients' recommendations for integrating supportive care of caregivers in neuro-oncology. This qualitative study examined caregiver distress as well as caregiver supportive care needs from the patients' perspective to inform future intervention development.

METHODS

Adults with PBT (N = 15; Mage = 45; 53% female; 93% White) were divided into four, 90-min focus groups moderated by a clinical neuropsychologist. Patients responded to semi-structured interview questions regarding various supportive care needs throughout the course of disease. Each discussion was transcribed and coded using thematic content analysis and NVivo software. Inter-rater reliability was excellent (MKappa = 0.92, range = 0.85-0.93).

RESULTS

Seven distinct codes related to PBT caregivers emerged and were classified into two broader themes: Caregiver Impact (47% of coded content) and Caregiver Support (53% of coded content). Caregiver Impact refers to patients' perspective of the practical and emotional demands of caregiving. Under Caregiver Support, patients cited a strong need for increased support of caregivers, including bereavement care, individual psychotherapy, and joint caregiver-patient dyad sessions.

CONCLUSION

Patients with PBT expressed profound concerns regarding the demands of caregiving and its impact on the well-being of their loved ones. Findings emphasize the need for comprehensive dyadic support in neuro-oncology throughout the disease trajectory to enhance the overall quality-of-life for both patients and their caregivers.

Evaluation of the understandability, actionability and reliability of YouTube videos for brain, head, and neck cancer information

PURPOSE

Online videos accessed via YouTube are a popular method to provide health education. Videos need to be critically evaluated for educational qualities as the information could influence health outcomes. The present study aimed to evaluate the understandability, actionability and reliability of videos available on YouTube regarding brain, head, and neck cancer information.

METHODS

A scoping review was conducted with a specific search strategy and inclusion/exclusion criteria based on previous studies. For each video, video characteristics and user engagement activities were recorded. Videos were evaluated using the PEMAT-A/V and modified DISCERN criteria. Spearman's rank correlation, Kruskal-Wallis test and Mann-Whitney U test were used for analysis.

RESULTS

Out of 200 retrieved videos, 37 were included and analysed. The median length of the video was 3 min and 33 s. The majority of videos were published by health institutional and private channels (43.2%, n = 16). Health institutional channels received the highest actionability (Md = 37.5, p = 0.049), while private channels resulted in lower views/day (Md = 0.46, p = 0.001) and likes/day (Md = 0.01, p = 0.002). Animated and narrated videos acquired the highest understandability score (Md = 92.31, p < 0.001). Videos with professional transcripts reported higher actionability (Md = 62.5, p = 0.004), reliability (Md = 3.33, p = 0.028), views/day (Md = 29.31, p = 0.026), and likes/day (Md = 0.272, p = 0.023).

CONCLUSION

YouTube videos pertaining to brain and head and neck cancer have low understandability, low actionability and moderate reliability. It is beneficial to have a stronger representation of trustworthy and credible organisations for sharing essential health information via YouTube. Including animations and professional video transcripts may improve their overall quality and consumer engagement.

A Shifting Paradigm Toward Family-Centered Care in Neuro-Oncology: A Longitudinal Quasi-Experimental Mixed-Methods Feasibility Study

Family-centered intervention can help families facing illness-related issues. We investigated the feasibility of Family and Network Conversations (FNCs) in high-grade glioma patients and their families. Quasi-experimental feasibility study with longitudinal mixed-methods design. Patients and families were invited to three FNCs over 1 year. They completed questionnaires at four time points and expressed their perspectives on the intervention through telephone interviews. Nurses' perspectives were collected in a focus group. Twenty-one patients and 47 family members were included. On average, patients were 66 years old, mainly male, married, living with caregivers, with unifocal cancer. On average, caregivers were 47 years old, mainly female, being spouses or children of the patient. Quantitative and qualitative data did not always match and expanded each other. Nurse-delivered FNCs holistically addressed families' needs while strengthening family's dialogue and union. Nurses felt empowered, underling that advanced competencies were required. Nurse-delivered FNCs are feasible to provide family-centered care, but they should be tailored to each family's needs.

'A Constant Black Cloud': The Emotional Impact of Informal Caregiving for Someone With a Lower-Grade Glioma

Those closest to people with lower-grade gliomas (LGGs) often assume the role of informal caregiver (IC). The additional responsibilities mean ICs of people with cancer can experience adverse impacts on their own lives. We explored the emotional impact of informal caregiving for people with LGGs. This was a descriptive qualitative study within the multi-method Ways Ahead project. We conducted semi-structured interviews with individuals from the United Kingdom, who currently, or in the past 5 years, informally cared for someone with an LGG. Interviews encompassed experiences of emotional impact as a consequence of caregiving for someone with an LGG. Inductive thematic analysis was undertaken. We interviewed 19 ICs (mean age 54.6 years; 14 females, 5 males). Participants reported substantial emotional impact. Four themes and associated subthemes were generated: Emotional responses to the illness (e.g. feeling helpless), Emotional responses to the unknown (e.g. anxiety about future uncertainty), Emotional consequences of care recipient changes (e.g. challenges of changed relationship dynamics), and Emotional weight of the responsibility (e.g. feeling burnout). Emotional impact in one area often exacerbated impact in another (e.g. future uncertainty impacted feelings of helplessness). Participants detailed the factors that helped them manage the emotional impact (e.g. being resilient). ICs of people with LGGs can experience wide-ranging emotional responses to and impacts of the illness, uncertain prognosis, care recipient changes, and the toll of caregiving. Adjustment and resilience are key protective factors, though further consideration of ways to identify and fulfil the emotional support needs of ICs of people with LGGs is required.

Exploratory multi-methods evaluation of an online intervention for carers of people with high-grade glioma

Background

Inadequate knowledge and skills and a lack of confidence to provide care have been identified as major unmet needs for carers of people with brain cancer. An online intervention was developed to address the unmet needs of carers of people with high-grade glioma.

Methods

Ten carers evaluated the intervention through multiple methods. Acceptability and usability were measured through online data analytics (unique page views, time on page), surveys, and interviews. Questionnaires measured potential impacts on distress (Distress Thermometer), depression, anxiety (Hospital Anxiety and Depression Scale), carer competence (Carer Competence Scale), carer preparedness (Caregiving Preparedness Scale), unmet needs (Supportive Care Needs Scale - Brain Tumor Specific for carers), usability and acceptability (USE).

Results

Results suggested the intervention had high levels of usability (usability scales' means range = 5.1 to 6.7 out of 7) and acceptability (M = 76.3/100). Correlations indicated the potential to impact depression. Qualitative findings highlighted benefits of the intervention as a comprehensive reliable resource that could validate and normalize carer experiences. Interview findings guided further improvements (eg, additional carer videos, content organization).

Conclusions

The study indicated high acceptability and usability of an online intervention for carers of people with high-grade glioma. This exploratory study also provided preliminary indications of a potential to decrease depression. However, a more robust, potentially longitudinal, investigation is needed with a larger and broader sample. Informed by this study, the intervention has been amended and a randomized controlled trial will further evaluate the enhanced intervention.

Psychosocial interventions for personality and behavior changes in adults with a brain tumor: A scoping review

Background

The objective of this scoping review was to describe the intervention characteristics and effectiveness of psychosocial interventions aimed at managing personality and behavior changes in people with brain tumors. A secondary objective was to explore if these interventions had an impact on outcomes for carers. Personality and behavior changes considered included aggression, apathy, paranoia, disinhibition, and emotional lability.

Methods

This review was conducted following the Joanna Briggs Institute methodology for scoping reviews and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) extension for scoping reviews. Searches were conducted in PsycINFO, CINAHL, Medline (Ovid), and Scopus. We synthesized studies published from 1996 to 2022 that evaluated interventions to manage brain tumor related personality and behavioral changes in adults. A data extraction tool were used based on the Joanna Briggs Institute template. Results are presented in a summary table and a narrative synthesis was conducted.

Results

Three thousand and five hundred and ninety-four records were screened. Title and abstract screening resulted in 29 potentially eligible studies. Full screening excluded 24 articles and 5 interventions met the inclusion criteria. The interventions were diverse in duration, delivery modality, setting, and participation (eg, the patient individually or patient and carer). The interventions reported improvements in the targeted personality and behavior change symptoms for patients with primary brain tumors. Four studies included a measure of personality and behavior change symptoms and two studies included a measure of outcomes for carers and reported improvements in carer knowledge and a reduction in carer distress. All studies sampled fewer than 100 participants. Studies had limited follow-up data and different tools were used to assess the presence and nature of personality and behavior changes.

Conclusions

There is a dearth of psychosocial interventions to support patients and their carers to manage brain tumor related personality and behavior changes.

Carer preparedness improved by providing a supportive educational intervention for carers of patients with high-grade glioma: RCT results

BACKGROUND

High-grade glioma (HGG) is a rapidly progressing and debilitating disease. Family carers take on multiple responsibilities and experience high levels of distress. We aimed to deliver a nurse-led intervention (Care-IS) to carers to improve their preparedness to care and reduce distress.

METHODS

We conducted a randomised controlled trial (ACTRN:12612001147875). Carers of HGG patients were recruited during patients' combined chemoradiation treatment. The complex intervention comprised four components: (1) initial telephone assessment of carer unmet needs; (2) tailored hard-copy resource folder; (3) home visit; and, (4) monthly telephone support for up to 12 months. Primary outcomes included preparedness for caregiving and distress at 2, 4, 6 and 12 months. Intervention effects were estimated using linear mixed models which included a time by group interaction. Secondary outcomes included anxiety, depression, quality of life, carer competence and strain.

RESULTS

We randomised 188 carers (n = 98 intervention, n = 90 control). The intervention group reported significantly higher preparedness for caregiving at 4 months (model β = 2.85, 95% CI 0.76-4.93) and all follow-up timepoints including 12 months (model β = 4.35, 95% CI 2.08-6.62), compared to the control group. However, there was no difference between groups in carer distress or any secondary outcomes.

CONCLUSIONS

This intervention was effective in improving carer preparedness. However, carer distress was not reduced, potentially due to the debilitating/progressive nature of HGG and ongoing caring responsibilities. Future research must explore whether carer interventions can improve carer adjustment, self-efficacy and coping and how we support carers after bereavement. Additionally, research is needed to determine how to implement carer support into practice.

Benefits of supportive strategies for carers of people with high-grade glioma: a systematic review : Strategies for addressing the needs of high-grade glioma carers

PURPOSE

To systematically review and examine current evidence for the carer-reported benefits of supportive care strategies for carers of adults with high-grade glioma (HGG).

METHODS

Four databases (CINAHL, EMBASE, PubMed, PsycINFO) were searched for articles published between January 2005 and April 2022 that assessed strategies for addressing the supportive care needs of carers of adults with HGG (WHO grade 3-4). Study selection and critical appraisal were conducted independently by three authors (DJ/MC, 2021; DJ/RJ 2022). Data extraction was conducted by one author (DJ) and checked by a second author (RJ). Results were synthesised narratively.

RESULTS

Twenty-one studies involving 1377 caregivers were included, targeting the carer directly (n = 10), the patient-carer dyad (n = 3), or focused on people with HGG + / - their carers (n = 8). A paucity of high-quality evidence exists for effective and comprehensive support directly addressing outcomes for carers of adults with HGG. Strategies that demonstrated some benefits included those that built carer knowledge or provided emotional support, delivered by health professionals or through peer support. Supportive and early palliative care programmes have potential to reduce unmet carer needs while providing ongoing carer support.

CONCLUSION

Strategies incorporating an educational component, emotional support, and a regular needs assessment with corresponding tailored support are most valued by carers. Future practice development research should adopt a value-based approach and exceed evaluation of efficacy outcomes to incorporate evaluation of the experience of patients, carers, and staff, as well as costs.

Family caregiver constructs and outcome measures in neuro-oncology: A systematic review

Background

As a first step to reach consensus on the key constructs and outcomes in neuro-oncology caregiver research, we performed a systematic review to evaluate the constructs that are being evaluated in research studies and how these have been assessed.

Methods

All peer-reviewed publications with primary data reporting on outcomes of family caregivers of adult primary brain tumor patients were eligible. Electronic databases PubMed/Medline, Embase, Web of Science, Emcare, Cochrane Library, and PsycINFO were searched up to September 2021. Using Covidence, title and abstract screening, full-text review, and data extraction were done by two researchers independently, with a third guiding consensus. Constructs as reported in each study, and how these were assessed were the primary result.

Results

Searches yielded 1090 unique records, with 213 remaining after title/abstract screening. Of these, 157 publications met inclusion criteria, comprising 120 unique studies. These originated from 18 countries and were published between 1996 and 2022. Most were observational (75%) cross-sectional (61%) studies, reporting on quantitative methods (62%). Twenty-seven different constructs were assessed and mapped along the Caregiver Health Model (CGHM) categories, namely, caregiver health, needs, tasks, beliefs and attitudes, and environment. Seventeen questionnaires were used &gt;2 times to measure the same construct, with the vast majority of questionnaires only used across one or two studies.

Conclusions

Neuro-oncology caregiving research is a field gaining traction, but lags behind in clear definition of key constructs, and consistency in assessment of these constructs. Developing consensus or guidance will improve comparability of studies, meta-analyses, and advance the science more quickly.