Legume effects in a native community invaded by alien Asteraceae in a multi-species comparison.

Facilitation has been a long-neglected type of interaction but received more attention recently. Legumes are commonly involved in facilitative interactions due to their nitrogen fixation. Facilitative interactions are so far underappreciated yet potentially important for biological invasions, especially given increasing numbers of alien species. In a common garden experiment using 30 annual Asteraceae species (neophytes, archaeophytes, plus some natives), grown in communities with or without legume presence, we measured functional traits and fitness in focal Asteraceae, as well as nitrogen characteristics of Asteraceae and two native community phytometer species. We investigated how legume presence affects relationships between trait and nitrogen concentration and Asteraceae fitness; and whether mechanisms of facilitation in legume presence and its effects on aboveground performance differ among native phytometer, neophyte, and archaeophyte Asteraceae using the δ15N natural abundance method. Lower specific leaf area was associated with higher aboveground biomass and seed production, with a stronger effect in legume absence. Nitrogen concentration had a positive relationship with biomass, but did not generally increase seed production. Our results hint at N facilitation for the native grass phytometer Festuca rupicola when growing in legume presence, whereas the forb Potentilla argentea and 27 alien Asteraceae species did not indicate facilitative effects. Intriguingly, direct legume facilitation in native phytometer species was only detected when growing with archaeophytes neighbors, not with neophytes. This hints at varied mechanisms of competition for nitrogen between natives and alien species of different residence time and deepens the understanding of altered facilitative leguminous effects in alien species presence.

Building a national network of student leaders in gerontology: Reflections on the student representative program.

The Canadian Association on Gerontology's Student Connection facilitates a national Student Representative program to promote the field of gerontology at local post-secondary institutions. Student Representatives are expected to host professional development and networking events on their campus to bring together students interested in the field of aging. Student-run groups help foster interest in aging-related careers and research, yet few studies explore how these groups are developed and sustained. As part of this quality improvement project, we examined (1) who participates as a Student Representative; (2) why students choose to participate in the program; and (3) how Student Representatives fulfil their role (including barriers and facilitators). We conclude with a discussion of the challenges that the Student Connection's executive committee has faced supporting this national network and identify opportunities to further enhance the program. Practical implications to support student engagement and promote sustainability of student-driven aginginterest groups are outlined.

The process of implementing culture change across a city-operated long-term care home and the importance of stakeholder engagement.

This article describes the Quality Improvement (QI) initiative of a culture change model, CareTO. CareTO is a made-in-Toronto, resident-driven, person-centred approach to care that was implemented across all units of a City of Toronto-operated Long-Term Care (LTC) home during the COVID-19 pandemic. The City of Toronto's Seniors Services and Long-Term Care (SSLTC) Division partnered with an external QI team to support the implementation of CareTO at the pilot site. This team employed a multi-method approach (fact-gathering conversations, stakeholder survey, and meeting) to understand how residents, families, and professionals defined CareTO, and identified implementation facilitators, barriers, and priorities. Emerging findings were shared with SSLTC to inform the delivery of CareTO in real time. Results suggested that stakeholder engagement, and collaborations between external partners and municipal governments are an effective means of mobilizing implementation initiatives by encouraging reflection, developing a shared understanding, and refining objectives.

The missing link: creating opportunities for older people to participate in academic conferences.

Including people with lived experience in knowledge co-creation and sharing processes is critical for enhancing the value and quality of health and social care research. In this brief report, we reflect on a collaboration between researchers and older people to judge a student poster competition at a virual seniors housing conference. We describe the steps taken to facilitate the judging process and present five recommendations to foster meaningful partnerships with older people at academic conferences and increase opportunities for emerging and established gerontological researchers to involve older people in their work.

Housing Satisfaction Among Older Adults Living in Low-Income Seniors' Housing.

Tenant experience surveys are a key tool for social housing landlords to gauge their success in providing high quality housing. This paper examines feedback from a tenant experience survey facilitated in a low-income housing seniors' housing community to: (1) examine their perceptions of their housing across key domains related to tenant satisfaction; and (2) identify opportunities they felt would improve their housing experience. A total of 1,114 households completed the survey. Results showed that tenants generally had high satisfaction with property management, safety and security, communication with staff, access to services, community support, and tenancy management. However, open-ended comments from tenants highlighted specific situations that negatively impacted their housing, including maintenance issues, safety concerns, and limited access to health and social programs. Findings point to several suggestions for social housing providers to enhance their services to foster inclusive, supportive, and safe housing environments for low-income older adults.

Designing and Implementing a New Seniors Services Coordinator Role for Low-Income Housing: A Qualitative Study.

Older adults living in social housing are disproportionally impacted by poverty, social isolation, and chronic health conditions that negatively impact their housing stability. In response, service coordination models of care that provide proactive case management have seen widespread adoption across low-income seniors housing communities. We examined the design and implementation of a new "seniors services coordinator" (SSC) role that was introduced by a social housing provider in Toronto, Canada. We conducted qualitative focus groups with tenants (n = 16), housing and policy staff (n = 16), and government-funded care coordinators (n = 16) to understand how the new SSC position formed relationships with tenants, assessed tenant needs and coordinated services, and built partnerships with government-funded system navigators. Since staff were assigned to specific buildings and had smaller caseloads, stakeholders felt that the SSC would be well positioned to build relationships of trust with tenants. Histories of mistrust, boundaries and time management, role conflicts, and system-level barriers, however, made it difficult for SSCs to fully carry out their role. Our findings highlight several design and implementation considerations that may impact the success of tenant-facing support staff such as SSCs, which can serve as a roadmap for other housing providers looking to implement similar initiatives.

Infection prevention and control across the continuum of COVID-19 care: A qualitative study of patients', caregivers' and providers' experiences.

INTRODUCTION: Healthcare facilities adopted restrictive visitor policies as a result of the COVID-19 (COVID) pandemic. Though these measures were necessary to promote the safety of patients, families and healthcare providers, it led to isolation and loneliness amongst acute care inpatients that can undermine patient rehabilitation and recovery. The study objectives were to (1) explore how infection prevention and control (IP&C) measures impacted stakeholders' perceptions of care quality and interactions with others and (2) investigate how these experiences and perceptions varied across stakeholder groups and care settings. METHODS: A qualitative descriptive study was conducted. Patients and their families from an inpatient COVID rehabilitation hospital and healthcare providers from an acute or rehabilitation COVID hospital were interviewed between August 2020 and February 2021. RESULTS: A total of 10 patients, 5 family members and 12 healthcare providers were interviewed. Four major themes were identified: (1) IP&C measures challenged the psychosocial health of all stakeholders across care settings; (2): IP&C measures precipitated a need for greater relational care from HCPs; (3) infection prevention tenets perpetuated COVID-related stigma that stakeholders experienced across care settings; and (4) technology was used to facilitate human connection when IP&C limited physical presence. CONCLUSION: IP&C measures challenged psychosocial health and maintenance of vital human connections. Loneliness and isolation were felt by all stakeholders due to physical distancing and COVID-related stigma. Some isolation was mitigated by the relational care provided by HCPs and technological innovations used. The findings of the study underscore the need to balance safety with psychosocial well-being across care settings and beyond the patient-provider dyad. PATIENT AND PUBLIC CONTRIBUTION: This study was informed by the Patient-Oriented Research Agenda and developed through consultations with patients and family caregivers to identify priority areas for rehabilitation research. Priority areas identified that informed the current study were (1) the need to focus on the psychosocial aspects of recovery from illness and injury and (2) the importance of exploring patients' recovery experiences and needs across the continuum of care. The study protocol, ethics submission, analysis and manuscript preparation were all informed by healthcare providers with lived experience of working in COVID care settings.

"We could be good partners if we work together": the perspectives of health and social service providers on the barriers to forming collaborative partnerships with social housing providers for older adults.

BACKGROUND: Many older adults are aging-at-home in social housing. However, the lack of integration between housing and health services makes it difficult for older tenants to access needed supports. We examined barriers and facilitators health and social service providers face providing on-site services to older tenants. METHODS: We conducted semi-structured qualitative interviews and focus groups with health and social service professionals (n = 58) in Toronto, Canada who provide community programs in support of older tenants who live in non-profit, rent-geared-to-income social housing. Interviews examined the barriers they faced in providing on-site services to older tenants. FINDINGS: Service providers strongly believed that collaboration with on-site housing staff led to better health and housing outcomes for older tenants. Despite the recognized benefits of partnering with housing staff, service providers felt that their ability to work effectively in the building was dependent on the staff (particularly the superintendent) assigned to that building. They also identified other barriers that made it difficult to work collaboratively with the housing provider, including staffing challenges such as high staff turnover and confusion about staff roles, a lack of understanding among housing staff about the link between housing and health, challenges sharing confidential information across sectors, and complex and inefficient partnership processes. CONCLUSION: Older adult tenants are increasingly vulnerable and in need of supports but the housing provider has a long history of ineffective partnerships with service providers driven by complex and inefficient staffing models, and an organizational culture that questions the role of and need for partnerships. Findings highlight the need for more effective integration of housing and health services. Simplified processes for establishing partnerships with service agencies and more opportunities for communication and collaboration with housing staff would ensure that services are reaching the most vulnerable tenants.

Pivoting professional development opportunities for students during COVID-19: A gerontology focused knowledge mobilization course.

The Canadian Association on Gerontology Student Connection (CAG-SC) is a national network for students interested in aging. As the CAG 2020 conference was canceled due to COVID-19, the CAG-SC pivoted professional development events for students to an online format. In partnership with the York University Knowledge Mobilization (KMb) unit an eight-week course on Knowledge Mobilization was offered. The course consisted of weekly asynchronous prerecorded videos and synchronous guest speakers who presented gerontology relevant KMb examples. To register for the course, students completed a registration form outlining their training background, experience with KMb, and the reasons for participation. A course feedback form at course completion captured student experience and reflections. A total of 56 interdisciplinary trainees from 18 post-secondary institutions completed the course. Participants found the course fostered a deeper understanding of KMb concepts and how to apply these to future careers in gerontology. This course was the CAG-SC's most successful professional development initiative. Participants recognized the importance of KMb in gerontology and felt the course provided skills needed to disseminate their research more effectively across sectors to improve quality of life for older adults. Reflections on the value of institutional partnership from the CAG-SC and York University Knowledge Mobilization are captured.

Native and alien species suffer from late arrival, while negative effects of multiple alien species on natives vary.

Ongoing globalisation and climate change are causing plant species to invade new habitats and thereby alter biodiversity and ecosystem functioning. Since numbers of plant invasions continue to increase globally, it is crucial to investigate the effects of multiple co-occurring alien species on native communities. Furthermore, priority effects due to the earlier emergence of certain species affecting fitness of later arriving species can shape community structure and affect native species performance. We investigate in a common garden pot experiment the interactions among five alien-native species pairs. First we focus on the effect of growing with either one or two alien neighbour species on a native plant, second we alter the arrival time of the alien or native neighbour by 3 weeks. Generally, native species performance decreased when surrounded by two alien species compared to only one, although the magnitude of this effect varied depending on species, with one species even performing better with alien neighbours than in monoculture. Species performance greatly decreased when arriving second in the pot, for both native and alien species. In contrast, alien species tended to benefit more from arriving early. Given that we studied annual ruderal species, their potentially lower competitive ability might explain why we detected negative effects of late arrival. We highlight the need to further elucidate underlying mechanisms of small-scale invasion dynamics to achieve generalisations concerning the response of multiple alien and native plants given their species-specific differences in response to neighbour species and arrival time.

Interventions to Reduce Ageism Against Older Adults: A Systematic Review and Meta-Analysis.

Background. Research has found a strong link between ageism, in the form of negative stereotypes, prejudice, and discrimination toward older people, and risks to their physical and mental health. Little is known, however, about the effectiveness of strategies to reduce ageism. Objectives. To assess the relative effects of 3 intervention types designed to reduce ageism among youths and adults-education, intergenerational contact, and combined education and intergenerational contact-by conducting a systematic review and meta-analysis. Search Methods. We searched PubMed, PsycINFO, AgeLine, EBSCO, Embase, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Global Index Medicus, Database of Abstracts of Reviews of Effects (DARE), Epistemonikos, Cochrane Database of Systematic Reviews, Campbell Collaboration, PROSPERO, GreyLit, and OpenGrey. We identified additional records by hand-searching reference lists of relevant review articles as well as records included in the meta-analysis. Two independent reviewers completed the search and screening process. Selection Criteria. Eligible studies were those that (1) evaluated an intervention designed to reduce ageism, (2) examined at least 1 ageism outcome in relation to older adults, (3) used a design with a comparison group (randomized or nonrandomized), and (4) were published after 1970, when the ageism concept was developed. Data Collection and Analysis. Two independent reviewers extracted study-level data from records using a common data collection spreadsheet. They also assessed study quality by using the Cochrane Risk of Bias Tool, and used the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) tool to assess quality of outcome evidence. Primary outcomes were attitudes toward older people and accuracy of knowledge about aging and older people. Secondary outcomes included comfort with older adults, anxiety about one's own aging, and interest in working in the field of geriatrics or gerontology. We carried out meta-analyses with statistical mixed models. Main Results. We identified 63 eligible studies (1976-2018) with a total sample of 6124 participants. Ageism interventions demonstrated a strongly significant effect on attitudes (differences of standardized mean differences [dD] = 0.33; P < .001), knowledge (dD = 0.42; P < .001), and comfort (dD = 0.50; P < .001), but no significant effect on anxiety (dD = 0.13; P = .33) or working with older adults (dD = -0.09; P = .40). Combined interventions with education and intergenerational contact showed the largest effects on attitudes. We found stronger effects for females and for adolescent and young adult groups. Authors' Conclusions. Interventions are associated with substantial reduction in ageism and should be part of an international strategy to improve perceptions of older people and the aging process. Additional research using more rigorous designs to examine the effects of interventions is strongly recommended. Public Health Implications. Ageism has well-established negative effects on the physical and mental health of older people. Findings suggest that relatively low-cost, feasible strategies involving education and intergenerational contact can serve as the basis of effective interventions to reduce ageism.

The evolving role of zoological parks and aquariums in migratory bird conservation.

As threats to migratory birds in the Western Hemisphere, including North America, intensify and bird populations decline, there is a growing interest among zoo biologists in the conservation and management of these taxa. The purpose of this article is to explore the role that Association of Zoos and Aquariums (AZA)-accredited zoos and aquariums either are playing or could play in the conservation and management of migratory birds. Topics explored include: (1) Public education and advocacy; (2) Captive breeding and reintroduction; (3) In situ conservation; (4) Tracking and monitoring; (5) Research/technology development; and (6) Sustainability/green practices; and (7) Partnerships. Zoos and aquariums could play an important role in increasing the public's access to understanding migratory birds and the threats they face, ultimately helping to protect these remarkable species.

Prevalence of Financial Fraud and Scams Among Older Adults in the United States: A Systematic Review and Meta-Analysis.

BACKGROUND: The financial exploitation of older adults was recently recognized by the Centers for Disease Control and Prevention as a serious public health problem. Knowledge of the prevalence of elder financial exploitation is mostly limited to the category of financial abuse, which occurs in relationships involving an expectation of trust. Little is known about the other major category of elder financial exploitation-elder financial fraud and scams, which is perpetrated by strangers. A valid estimate of elder financial fraud-scam prevalence is necessary as a foundation for research and prevention efforts. OBJECTIVES: To estimate the prevalence of elder financial fraud-scam victimization in the United States based on a systematic review and meta-analysis. SEARCH METHODS: Multiple investigators independently screened titles and abstracts and reviewed relevant full-text records from PubMed, Medline, PsycINFO, Criminal Justice Abstracts, Social Work Abstracts, and AgeLine databases. SELECTION CRITERIA: To maximize the validity and generalizability of prevalence estimation, we restricted eligibility to general population-based studies (English speaking, 1990 onward) using state- or national-level probability sampling and collecting data directly from older adults. DATA COLLECTION AND ANALYSIS: Information on elder financial fraud-scam prevalence and study-level characteristics was extracted independently by 2 investigators. Meta-analysis of elder financial fraud-scam prevalence used generalized mixed models with individual studies as levels of a random classification factor. MAIN RESULTS: We included 12 studies involving a total of 41 711 individuals in the meta-analysis. Overall pooled elder financial fraud-scam prevalence (up to 5-year period) across studies was 5.6% (95% confidence interval [CI] = 4.0%, 7.8%), with a 1-year period prevalence of 5.4% (95% CI = 3.2%, 7.6%). Studies using a series of questions describing specific fraud-scam events to measure victimization found a significantly higher prevalence (7.1%; 95% CI = 4.8%, 9.4%) than studies using a single, general-question self-report assessment approach (3.6%; 95% CI = 1.8%, 5.4%). AUTHOR'S CONCLUSIONS: Elder financial fraud and scams is a common problem, affecting approximately 1 of every 18 cognitively intact, community-dwelling older adults each year; it requires further attention from researchers, clinicians, and policymakers. Elder financial fraud-scam prevalence findings in this study likely underestimate the true population prevalence. We provide methodological recommendations to limit older adult participation and reporting bias in future population-based research. Public Health Implications. Elder financial exploitation victimization is associated with mortality, hospitalization, and poor physical and mental health. Health care professionals working with older adults likely routinely encounter patients who are fraud-scam victims. Validation of instruments to screen for elder financial fraud and scams in clinical settings is an important area of future research. Without effective primary prevention strategies, the absolute scope of this problem will escalate with the growing population of older adults.

A systematic review on community-based interventions for elder abuse and neglect.

Elder abuse and neglect is a societal issue that requires prevention and intervention strategies at the practice and policy level. A systematic review on the efficacy of community-based elder abuse interventions was undertaken to advance the state of knowledge in the field. The peer-reviewed literature between 2009 and December 2015 were searched across four databases. Two raters independently reviewed all articles, assessed their methodological quality, and used a modified Sackett Scale to assign levels of evidence. Four thousand nine hundred and five articles were identified; nine were selected for inclusion. Although there was Level-1 evidence for psychological interventions (n = 2), only one study on strategies for relatives (START) led to a reported decrease in elder abuse. There was Level-4 evidence for conservatorship, an elder abuse intervention/prevention program (ECARE), and a multidisciplinary intervention (n = 4), in which one study yielded significant decreases in elder abuse and/or neglect. The remaining three were classified as Level-5 evidence (n = 3) for elder mediation and multidisciplinary interventions. There are limited studies with high levels of evidence for interventions that decrease elder abuse and neglect. The scarcity of community-based interventions for older adults and caregivers highlights the need for further work to elevate the quality of studies.

Performance on the Boston Naming Test in Bilinguals.

OBJECTIVES: We examined performance on the Boston Naming Test (BNT) in older and younger adults who were monolingual English or French speakers, or bilingual speakers of English and French (n=215). METHODS: Monolingual participants completed the task in their native language, and bilingual participants completed the task in English, French, and bilingual (either-language) administrations. RESULTS: Overall, younger and older monolingual French speakers performed worse than other groups; bilingual participants performed worst in the French administration and approximately two-thirds of bilingual participants performed better when responses were accepted in either language. Surprisingly, however, a subset of bilinguals performed worse when responses were accepted in either language as compared to their maximum score achieved in either English or French. This either-language disadvantage does not appear to be associated with the degree of balanced bilingualism, but instead appears to be related to overall naming abilities. Differential item analysis comparing language groups and the different administrations identified several items that displayed uniform and/or non-uniform differential item functioning (DIF). CONCLUSIONS: The BNT does not elicit equivalent performance in English and French, even when assessing naming performance in monolingual French speakers using the French version of the test. Scores were lower in French overall, and several items exhibited DIF. We recommend caution in interpreting performance on these items in bilingual speakers. Finally, not all bilinguals benefit from an either-language administration of the BNT.

Developing a Research Agenda on Resident-to-Resident Aggression: Recommendations From a Consensus Conference.

This article provides an overview of the development of a research agenda on resident-to-resident aggression (RRA) in long-term care facilities by an expert panel of researchers and practitioners. A 1-day consensus-building workshop using a modified Delphi approach was held to gain consensus on nomenclature and an operational definition for RRA, to identify RRA research priorities, and to develop a roadmap for future research on these priorities. Among the six identified terms in the literature, RRA was selected. The top five priorities were: (a) developing/assessing RRA environmental interventions; (b) identification of the environmental factors triggering RRA; (c) incidence/prevalence of RRA; (d) developing/assessing staff RRA education interventions; and (e) identification of RRA perpetrator and victim characteristics. Given the significant harm RRA poses for long-term care residents, this meeting is an important milestone, as it is the first organized effort to mobilize knowledge on this under-studied topic at the research, clinical, and policy levels.

Predicting plant invasions under climate change: are species distribution models validated by field trials?

Climate change may facilitate alien species invasion into new areas, particularly for species from warm native ranges introduced into areas currently marginal for temperature. Although conclusions from modelling approaches and experimental studies are generally similar, combining the two approaches has rarely occurred. The aim of this study was to validate species distribution models by conducting field trials in sites of differing suitability as predicted by the models, thus increasing confidence in their ability to assess invasion risk. Three recently naturalized alien plants in New Zealand were used as study species (Archontophoenix cunninghamiana, Psidium guajava and Schefflera actinophylla): they originate from warm native ranges, are woody bird-dispersed species and of concern as potential weeds. Seedlings were grown in six sites across the country, differing both in climate and suitability (as predicted by the species distribution models). Seedling growth and survival were recorded over two summers and one or two winter seasons, and temperature and precipitation were monitored hourly at each site. Additionally, alien seedling performances were compared to those of closely related native species (Rhopalostylis sapida, Lophomyrtus bullata and Schefflera digitata). Furthermore, half of the seedlings were sprayed with pesticide, to investigate whether enemy release may influence performance. The results showed large differences in growth and survival of the alien species among the six sites. In the more suitable sites, performance was frequently higher compared to the native species. Leaf damage from invertebrate herbivory was low for both alien and native seedlings, with little evidence that the alien species should have an advantage over the native species because of enemy release. Correlations between performance in the field and predicted suitability of species distribution models were generally high. The projected increase in minimum temperature and reduced frosts with climate change may provide more suitable habitats and enable the spread of these species.

The Quebec Semantic Memory Battery: Development, Standardization, and Psychometric Assessment of a Semantic Memory Battery in French.

OBJECTIVE: People with aphasia often experience semantic memory (SM) impairment. To improve diagnostic outcomes, SM tasks should recruit various sensory input channels (oral, written, and pictographic), permitting accessible, complete evaluation. There is a need for SM batteries for French-speaking Quebecers that use multiple input channels. The present study, therefore, describes the development of a novel French-language semantic battery: la Batterie québécoise de la mémoire sémantique (BQMS), the assessment of the BQMS's psychometric properties, and the establishment of normative data for the BQMS. METHOD: We first developed eight SM tasks. Following a pilot validation study, we determined the BQMS's reliability and validity, to ensure consistent, accurate detection of SM impairment. Among French-speaking Quebecers with cerebrovascular aphasia (n = 10), people with the semantic variant of Primary Progressive Aphasia (n = 4), and healthy controls (n = 14), we examined its convergent validity, concurrent validity, test-retest reliability, and internal consistency. Finally, we established normative data for the BQMS by calculating cut-off scores per task that indicate SM impairment (in 93 cognitively healthy French-speaking Quebecers), stratified by sociodemographic variables associated with performance. RESULTS: The BQMS shows high concurrent, discriminant, and convergent validity, as well as good test-retest reliability and internal consistency. The cut-off score indicating SM impairment ranged from the 2nd to 25th percentiles (stratified by task, age, and sex). CONCLUSIONS: The BQMS's psychometric properties indicate that it could be a valuable clinical tool for detecting SM impairment. Our normative data will help clinicians detect such impairments.

Subjective cognitive decline and objective cognitive performance in older adults: A systematic review of longitudinal and cross-sectional studies.

Older adults with subjective cognitive decline (SCD) have a higher risk of developing future cognitive decline than those without SCD. However, the association between SCD and objective cognitive performance remains unclear. This PRISMA 2020-compliant systematic review aims to provide a qualitative assessment of the longitudinal and cross-sectional relationship between SCD and objective cognitive performance in different cognitive domains, in neuropsychologically healthy, community-dwelling older adults (average age of 55 or older). To identify pertinent studies, a comprehensive search was conducted from seven databases. The National Heart, Lung and Blood Institute Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies was used to assess the quality of included studies. Inclusion criteria were met by 167 studies, which were full-text and published between 1 January 1982 and 16 May 2023 (inclusive) in the languages of English, French, or Spanish and presenting data on objective cognitive performance in older adults with SCD. Overall, we found that SCD was associated with poorer objective cognitive performance on measures of global cognition and memory longitudinally compared to non-SCD status, but this association was inconsistent in cross-sectional studies. This association became stronger with the use of continuous measures of SCD as opposed to dichotomous measures. Additionally, results highlight the known lack of consistency in SCD assessment among studies and comparatively small number of longitudinal studies in SCD research.