SARS-CoV-2 transmission risk for common group activities and settings: a living scoping review.

BACKGROUND: While the modes of transmission of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) are well studied, the risk of transmission in various group settings or activities is less clear. This living scoping review aims to summarize the risk factors of coronavirus disease 2019 (COVID-19) spread in common group activities (e.g. social gatherings) or settings (e.g. schools, hospitals, shared workplaces) to understand the drivers of transmission and to inform a risk assessment profile tool for use of rapid antigen detection tests. METHODS: We systematically searched electronic databases, MEDLINE and Embase, from January 2019 until February 2022. We included studies that evaluated the risk of SARS-CoV-2 transmission in activities and settings, deemed strategically important to government departments in Ireland, provided by the Department of Health (Ireland) Expert Advisory Group on Rapid Testing. RESULTS: After screening 14 052 records, data from 139 studies were narratively synthesized. The risk was consistently reported as 'high' for large social events (e.g. weddings) and indoor sports, working in healthcare settings and shared workplaces, working/living in residential settings and travelling via public transportation. Most studies were from healthcare settings, with common risk factors including close contact with COVID-19 cases, working in high-risk departments and inappropriate use of personal protective equipment. For other settings and activities, lack of infection prevention and control practices reportedly contributed to infection transmission. CONCLUSION: The heterogeneity across studies and lack of direct information on dominant variants, preventive measures, vaccination coverage necessitates further research on transmission risk within group activities to inform infection prevention and control measures.

Performance of different rapid antigen testing strategies for SARS-CoV-2: A living rapid review.

BACKGROUND: Rapid antigen detection tests (RADTs) for SARS-CoV-2 testing offer several advantages over molecular tests, but there is little evidence supporting an ideal testing algorithm. We aimed to examine the diagnostic test accuracy (DTA) and the effectiveness of different RADT SARS-CoV-2 testing strategies. METHODS: Following PRISMA DTA guidance, we carried out a living rapid review and meta-analysis. Searches were conducted in Ovid MEDLINE® ALL, Embase and Cochrane CENTRAL electronic databases until February 2022. Results were visualized using forest plots and included in random-effects univariate meta-analyses, where eligible. RESULTS: After screening 8010 records, 18 studies were included. Only one study provided data on incidence outcomes. Seventeen studies were DTA reports with direct comparisons of RADT strategies, using RT-PCR as the reference standard. Testing settings varied, corresponding to original SARS-CoV-2 or early variants. Strategies included differences in serial testing, the individual collecting swabs and swab sample locations. Overall, specificity remained high (>98%) across strategies. Although results were heterogeneous, the sensitivity for healthcare worker-collected samples was greater than for self-collected samples. Nasal samples had comparable sensitivity when compared to paired RADTs with nasopharyngeal samples, but sensitivity was much lower for saliva samples. The limited evidence for serial testing suggested higher sensitivity if RADTs were administered every 3 days compared to less frequent testing. CONCLUSIONS: Additional high-quality research is needed to confirm our findings; all studies were judged to be at risk of bias, with significant heterogeneity in sensitivity estimates. Evaluations of testing algorithms in real-world settings are recommended, especially for transmission and incidence outcomes.

Issues associated with possible implementation of Non-Invasive Prenatal Testing (NIPT) in first-tier screening: A rapid scoping review.

In recent years, as the implementation and use of Non-Invasive Prenatal Testing (NIPT) have increased, the cost of the test has been decreasing. The cost of NIPT is expected to fall further in the upcoming years. As a result of the decreasing cost of NIPT, many jurisdictions may change their prenatal screening policies toward abandoning serum-based screening and instead, implement and support NIPT as the first-tier screening for all women. There are several concerns in replacing first-trimester screening with NIPT. In this scoping review, we aimed to map the existing knowledge about possible issues in the systematic implementation of NIPT as the primary method of first-tier screening and to assess if any jurisdiction has altered its policy and discontinued serum-based prenatal screening in exchange for NIPT. The Medline database (Ovid) and Google Scholar was searched and all the studies discussing, investigating, or reporting on the systematic implementation of NIPT as the primary method of first-tier screening were included. All the studies went through a two-stage screening process and included full-text articles were reviewed. We did not find any articles indicating a country or region that replaced traditional prenatal screening by NIPT. The included articles were charted, and the data about the possible issues in the systematic implementation of NIPT as the primary method of first-tier screening are summarized narratively and presented in tables in four categories. The findings of this scoping review may be informative for stakeholders and policymakers regarding recent changes in NIPT implementation policies around the world and may aid with developing policy for NIPT implementation with a broader perspective.

Public health emergency and psychological distress among healthcare workers: a scoping review.

BACKGROUND: Pandemics and natural disasters are immensely stressful events for frontline healthcare workers, as they provide patient care to a population undergoing the impacts of the disaster while experiencing such impacts to their personal lives themselves. With increased stressors to an already demanding job, frontline healthcare workers are at a higher risk of adverse effects to their mental health. The current COVID-19 pandemic has already shown to have had significant impact on the mental health of healthcare workers with increased rates of burnout, anxiety and depression. There is already literature showing the utility of individual programs at improving mental health, however, interventions at the organizational level are not well explored. This scoping review aims to provide an overview and determine the utility of a systematic review of the current body of literature assessing the effectiveness of mental health interventions at the organizational level for healthcare workers during or after a public health emergency. METHODS: Electronic databases such as Medline on OVID, CENTRAL, PsycINFO on OVID and Embase on OVID were searched. A targeted search of the grey literature was conducted to identify any non-indexed studies. The population, concept and context approach was used to develop the eligibility criteria. Articles were included if (1) they assessed the impact of interventions to improve wellbeing or reduce the distress on healthcare personnel, first responders or military actively providing medical care; (2) provided quantitative or qualitative data with clearly defined outcomes that focused on established mental health indicators or qualitative descriptions on distress and wellbeing, validated scales and workplace indicators; (3) focused on organizational level interventions that occurred in a public health crisis. RESULTS: The literature search resulted in 4007 citations and 115 potentially relevant full-text papers. All except 5 were excluded. There were four review articles and one experimental study. There were no other unpublished reports that warranted inclusion. CONCLUSIONS: There is a distinct lack of research examining organizational interventions addressing mental resilience and well-being in healthcare workers in disaster settings. A systematic review in this area would be low yield. There is a clear need for further research in this area.

Development of a risk assessment profile tool to determine appropriate use of SARS-CoV-2 rapid antigen detection tests for different activities and events in Ireland, since October 2021.

We describe the development of a risk assessment profile tool that incorporates data from multiple domains to help determine activities and events where rapid antigen detection tests (Ag-RDT) could be used to screen asymptomatic individuals to identify infectious cases as an additional mitigation measure to reduce transmission of SARS-CoV-2. The tool aims to stratify, in real time, the overall risk of SARS-CoV-2 transmission associated with common activities and events, and this can be matched to an appropriate Ag-RDT testing protocol.

Clinical outcomes of polyvalent immunoglobulin use in solid organ transplant recipients: A systematic review and meta-analysis.

Polyvalent immunoglobulin is commonly used for desensitization and treatment of antibody-mediated rejection in kidney transplantation but its impact on other outcomes is not known. This systematic review investigated the impact of immunoglobulin prophylaxis on infection, rejection, graft loss, and death following kidney transplantation. A comprehensive literature search located 18 studies (n = 8 randomized controlled trials). None examined the effect of immunoglobulin prophylaxis in transplant recipients with hypogammaglobulinemia. Quality of included studies was variable with high to very high risk of bias. In the randomized trials, immunoglobulin use did not reduce cytomegalovirus infection (OR 0.68 [0.39, 1.21]; 6 studies, n = 295), rejection (OR 0.96 [0.50, 1.82]; 4 studies, n = 187), or graft loss (OR 1.03 [0.46, 2.30]; 6 studies, n = 265). In non-randomized studies, immunoglobulin did not reduce cytomegalovirus infection (OR 0.63 [0.20, 1.94]; 6 studies, n = 361) or death (OR 1.32 [0.05, 38.79]; 3 studies, n = 222) but reduce rejection (OR 0.47 [0.24, 0.94]; 4 studies, n = 268) and graft loss (OR 0.15 [0.05, 0.43]; 2 studies, n = 118). Data were scarce and sample size of current evidence was small. Adequately powered randomized trials are needed to determine if immunoglobulin is an effective intervention to reduce infection, rejection, graft loss, or death following kidney transplantation with and without hypogammaglobulinemia.

Clinical outcomes of polyvalent immunoglobulin use in solid organ transplant recipients: A systematic review and meta-analysis - Part II: Non-kidney transplant.

Immunoglobulin (IG) is commonly used to desensitize and treat antibody-mediated rejection in solid organ transplant (SOT) recipients. The impact of IG on other outcomes such as infection, all-cause mortality, graft rejection, and graft loss is not clear. We conducted a similar systematic review and meta-analysis to our previously reported Part I excluding kidney transplant. A comprehensive literature review found 16 studies involving the following organ types: heart (6), lung (4), liver (4), and multiple organs (2). Meta-analysis could only be performed on mortality outcome in heart and lung studies due to inadequate data on other outcomes. There was a significant reduction in mortality (OR 0.34 [0.17-0.69]; 4 studies, n = 455) in heart transplant with hypogammaglobulinemia receiving IVIG vs no IVIG. Mortality in lung transplant recipients with hypogammaglobulinemia receiving IVIG was comparable to those of no hypogammaglobulinemia (OR 1.05 [0.49, 2.26]; 2 studies, n = 887). In summary, IVIG targeted prophylaxis may decrease mortality in heart transplant recipients as compared to those with hypogammaglobulinemia not receiving IVIG, or improve mortality to the equivalent level with those without hypogammaglobulinemia in lung transplant recipients, but there is a lack of data to support physicians in making decisions around using immunoglobulins in all SOT recipients for infection prophylaxis.

Effectiveness of Outpatient Versus Operating Room Hysteroscopy for the Diagnosis and Treatment of Uterine Conditions: A Systematic Review and Meta-Analysis.

Traditionally, hysteroscopy has been performed in the main operating room with the patient under general anaesthesia. Hysteroscopy performed in an office setting avoids the risks of general anaesthesia. The aim of this review was to evaluate the effectiveness of outpatient hysteroscopy compared with hysteroscopy performed in the operating room to diagnose and/or treat intrauterine pathology. Relevant electronic databases were searched, including Medline, EMBASE, and the Cochrane Library. RCTs and nonrandomized studies that compared the efficacy of outpatient hysteroscopy and traditional hysteroscopy performed in the operating room were included. The primary outcome of interest was diagnostic accuracy, and secondary outcomes included treatment success, adverse events, pain, patient satisfaction, and cost. The Cochrane risk of bias tool was used to assess RCTs, and the Downs and Black tool was used for nonrandomized studies. A total of 12 658 abstracts and 347 full-text articles were assessed, from which a total of 20 full-text studies met our eligibility criteria. No study compared the diagnostic accuracy of outpatient hysteroscopy with hysteroscopy performed in the operating room. There was no significant difference between hysteroscopy performed in the outpatient and operating room setting for treatment success, adverse events, and patient satisfaction. In the included RCTs, there was greater reported postoperative pain in the outpatient setting (standard mean difference 0.19, 95% CI 0.01-0.37). All seven economic studies concluded that outpatient hysteroscopy (range US$97-1258) is substantially less expensive than hysteroscopy performed in the operating room (range US$258-3144). Included RCTs had serious risks of selection, performance, and detection bias. The results of this review demonstrate that implementing hysteroscopy in an outpatient setting without general anaesthesia should be thoughtfully considered. The current available evidence demonstrates greater reported postoperative pain in the outpatient setting and no statistically significant differences in all other studied outcome measures between outpatient and intraoperative hysteroscopy procedures.

Renin-Angiotensin System Blockade and Long-term Clinical Outcomes in Kidney Transplant Recipients: A Meta-analysis of Randomized Controlled Trials.

BACKGROUND: Renin-angiotensin system [RAS] blockade has been established as the cornerstone of therapy in the general population, and especially in chronic kidney disease. However, its efficacy in the kidney transplant population remains unknown. STUDY DESIGN: We conducted a systematic review and meta-analysis using MEDLINE (1966 to November 2015), Embase (1980 to November 2015), and the Cochrane Library (third quarter 2015), as well as a PubMed search for recent nonindexed citations. SETTINGS & POPULATION: Adult kidney transplant recipients. SELECTION CRITERIA FOR STUDIES: Randomized controlled trials, with follow-up of 1 year or longer and reporting clinical outcomes of interest. INTERVENTION: RAS blockade (angiotensin-converting enzyme inhibitors or angiotensin receptor blockers) versus placebo, active comparator, or standard of care. OUTCOMES: All-cause mortality, all-cause transplant failure, and doubling of serum creatinine level. RESULTS: 8 trials (1,502 participants) were included in the systematic review. RAS blockade did not significantly alter all-cause mortality (risk ratio [RR], 0.96; 95% CI, 0.62-1.51), transplant failure (RR, 0.76; 95% CI, 0.49-1.18), or creatinine level doubling (RR, 0.84; 95% CI, 0.51-1.39) compared to the control group. This result was robust across the subgroups of interest (angiotensin-converting enzyme inhibitor or angiotensin receptor blocker intervention, follow up ≥ 1 year, and baseline proteinuria as an inclusion criterion). There was significantly higher risk for hyperkalemia with RAS blockade (RR, 2.44; 95% CI, 1.53-3.90). There was no statistical heterogeneity in any of these pooled analyses. LIMITATIONS: Relatively smaller number of events (overall, 71 deaths and 72 transplant failures among 8 trials) and relatively short follow-up (only 2 trials > 5 years). CONCLUSIONS: This analysis neither supports nor refutes the hypothesis that RAS blockade improves clinical outcomes in kidney transplant recipients. A trial with more than 10,000 patients would be needed to definitively answer whether RAS blockade reduces transplant loss in this population. In the meantime, clinicians should weigh the risks and benefits of using these medications with their patients on a case-by-case basis.

Effectiveness of e-cigarettes as a stop smoking intervention in adults: a systematic review.

BACKGROUND: This systematic review aims to identify the benefits and harms of electronic cigarettes (e-cigarettes) as a smoking cessation aid in adults (aged ≥ 18 years) and to inform the development of the Canadian Task Force on Preventive Health Care's (CTFPHC) clinical practice guidelines on e-cigarettes. METHODS: We searched Ovid MEDLINE®, Ovid MEDLINE® Epub Ahead of Print, In-Process & Other Non-Indexed Citations, PsycINFO, Embase Classic + Embase, and the Cochrane Library on Wiley. Searches were conducted from January 2016 to July 2019 and updated on 24 September 2020 and 25 January 2024. Two reviewers independently performed title-abstract and full-text screening according to the pre-determined inclusion criteria. Data extraction, quality assessments, and the application of Grading of Recommendations Assessment, Development and Evaluation (GRADE) were performed by one independent reviewer and verified by another. RESULTS: We identified 18 studies on 17 randomized controlled trials that compared e-cigarettes with nicotine to e-cigarettes without nicotine and e-cigarettes (with or without nicotine) to other interventions (i.e., no intervention, waitlist, standard/usual care, quit advice, or behavioral support). Considering the benefits of e-cigarettes in terms of smoking abstinence and smoking frequency reduction, 14 studies showed small or moderate benefits of e-cigarettes with or without nicotine compared to other interventions; although, with low, very low or moderate evidence certainty. With a focus on e-cigarettes with nicotine specifically, 12 studies showed benefits in terms of smoking abstinence when compared with usual care or non-nicotine e-cigarettes. In terms of harms following nicotine or non-nicotine e-cigarette use, 15 studies reported mild adverse events with little to no difference between groups and low to very low evidence certainty. CONCLUSION: The evidence synthesis on the e-cigarette's effectiveness shows data surrounding benefits having low to moderate evidence certainty for some comparisons and very low certainty for others, indicating that e-cigarettes may or probably increase smoking cessation, whereas, for harms, there is low to very low evidence certainty. Since the duration for outcome measurement varied among different studies, it may not be long-term enough for Adverse Events (AEs) to emerge, and there is a need for more research to understand the long-term benefits and potential harms of e-cigarettes. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42018099692.

Screening for depression in children and adolescents in primary care or non-mental health settings: a systematic review update.

BACKGROUND: The transition from childhood to adolescence is associated with an increase in rates of some psychiatric disorders, including major depressive disorder, a debilitating mood disorder. The aim of this systematic review is to update the evidence on the benefits and harms of screening for depression in primary care and non-mental health clinic settings among children and adolescents. METHODS: This review is an update of a previous systematic review, for which the last search was conducted in 2017. We searched Ovid MEDLINE® ALL, Embase Classic+Embase, PsycINFO, Cochrane Central Register of Controlled Trials, and CINAHL on November 4, 2019, and updated on February 19, 2021. If no randomized controlled trials were found, we planned to conduct an additional search for non-randomized trials with a comparator group. For non-randomized trials, we applied a non-randomized controlled trial filter and searched the same databases except for Cochrane Central Register of Controlled Trials from January 2015 to February 2021. We also conducted a targeted search of the gray literature for unpublished documents. Title and abstract, and full-text screening were completed independently by pairs of reviewers. RESULTS: In this review update, we were unable to find any randomized controlled studies that satisfied our eligibility criteria and evaluated the potential benefits and harms of screening for depression in children and adolescents. Additionally, a search for non-randomized trials yielded no studies that met the inclusion criteria. CONCLUSIONS: The findings of this review indicate a lack of available evidence regarding the potential benefits and harms of screening for depression in children and adolescents. This absence of evidence emphasizes the necessity for well-conducted clinical trials to evaluate the effectiveness of depression screening among children and adolescents in primary care and non-mental health clinic settings. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42020150373 .

Effectiveness of smoking cessation interventions among adults: an overview of systematic reviews.

BACKGROUND: This overview of reviews aims to identify evidence on the benefits (i.e. tobacco use abstinence and reduction in smoking frequency) and harms (i.e. possible adverse events/outcomes) of smoking cessation interventions among adults aged 18 years and older. METHODS: We searched Medline, Embase, PsycINFO, Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects, the CADTH Health Technology Assessment Database and several other websites for grey literature. Searches were conducted on November 12, 2018, updated on September 24, 2020, with publication years 2008 to 2020. Two reviewers independently performed title-abstract and full-text screening considering pre-determined inclusion criteria. Data extraction and quality assessments were initially completed by two reviewers independently (i.e. 73% of included studies (n = 22)) using A Measurement Tool to Assess Systematic Reviews-2 (AMSTAR 2), and the remainder done by one reviewer and verified by another due to resources and feasibility. The application of Grading of Recommendations Assessment, Development and Evaluation (GRADE) was performed by one independent reviewer and verified by another. RESULTS: A total of 22 Cochrane systematic reviews evaluating the impact of smoking cessation interventions on outcomes such as tobacco use abstinence, reduction in smoking frequency, quality of life and possible adverse events were included. Pharmaceutical (i.e. varenicline, cytisine, nicotine replacement therapy (NRT), bupropion) and behavioural interventions (i.e. physician advice, non-tailored print-based self-help materials, stage-based individual counselling, etc.) showed to have increased smoking cessation; whereas, data for mobile phone-based interventions including text messaging, hypnotherapy, acupuncture, continuous auricular stimulation, laser therapy, electrostimulation, acupressure, St John's wort, S-adenosyl-L-methionine (SAMe), interactive voice response systems and other combination treatments were unclear. Considering harms related to smoking cessation interventions, small/mild harms (i.e. increased palpitations, chest pain, nausea, insomnia, headache) were observed following NRT, varenicline and cytisine use. There were no data on harms related to behavioural therapies (i.e. individual or group counselling self-help materials, internet interventions), combination therapies or other therapies (i.e. laser therapy, electrostimulation, acupressure, St John's wort, SAMe). CONCLUSION: Results suggest that pharmacological and behavioural interventions may help the general smoking population quit smoking with observed small/mild harms following NRT or varenicline. Consequently, evidence regarding ideal intervention strategies and the long-term impact of these interventions for preventing smoking was unclear. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42018099691.

Screening for hypertension in adults: protocol for evidence reviews to inform a Canadian Task Force on Preventive Health Care guideline update.

PURPOSE: To inform updated recommendations by the Canadian Task Force on Preventive Health Care on screening in a primary care setting for hypertension in adults aged 18 years and older. This protocol outlines the scope and methods for a series of systematic reviews and one overview of reviews. METHODS: To evaluate the benefits and harms of screening for hypertension, the Task Force will rely on the relevant key questions from the 2021 United States Preventive Services Task Force systematic review. In addition, a series of reviews will be conducted to identify, appraise, and synthesize the evidence on (1) the association of blood pressure measurement methods and future cardiovascular (CVD)-related outcomes, (2) thresholds for discussions of treatment initiation, and (3) patient acceptability of hypertension screening methods. For the review of blood pressure measurement methods and future CVD-related outcomes, we will perform a de novo review and search MEDLINE, Embase, CENTRAL, and APA PsycInfo for randomized controlled trials, prospective or retrospective cohort studies, nested case-control studies, and within-arm analyses of intervention studies. For the thresholds for discussions of treatment initiation review, we will perform an overview of reviews and update results from a relevant 2019 UK NICE review. We will search MEDLINE, Embase, APA PsycInfo, and Epistemonikos for systematic reviews. For the acceptability review, we will perform a de novo systematic review and search MEDLINE, Embase, and APA PsycInfo for randomized controlled trials, controlled clinical trials, and observational studies with comparison groups. Websites of relevant organizations, gray literature sources, and the reference lists of included studies and reviews will be hand-searched. Title and abstract screening will be completed by two independent reviewers. Full-text screening, data extraction, risk-of-bias assessment, and GRADE (Grading of Recommendations Assessment, Development and Evaluation) will be completed independently by two reviewers. Results from included studies will be synthesized narratively and pooled via meta-analysis when appropriate. The GRADE approach will be used to assess the certainty of evidence for outcomes. DISCUSSION: The results of the evidence reviews will be used to inform Canadian recommendations on screening for hypertension in adults aged 18 years and older. SYSTEMATIC REVIEW REGISTRATION: This protocol is registered on PROSPERO and is available on the Open Science Framework (osf.io/8w4tz).

Health equity considerations in guideline development: a rapid scoping review.

BACKGROUND: Systematic guidance for considering health equity in guidelines is lacking. This scoping review aims to synthesize current best practices for integrating health equity into guideline development and the benefits or drawbacks of these practices. METHODS: We searched Ovid MEDLINE ALL and Embase Classic+Embase on the Ovid platform, CINAHL on EBSCO, and Web of Science (Core Collection) from 2010 to 2022. We searched grey literature from 2015 to 2022, using the Canadian Agency for Drugs and Technologies in Health Grey Matters checklist and searches of potentially relevant websites. Articles were screened independently by 1 reviewer. Proposed best practices, advantages and disadvantages, and tools were extracted independently by 1 reviewer and qualitatively synthesized based on the relevant steps of a comprehensive checklist covering the stages of guideline development. RESULTS: We included 26 articles that proposed best practices for incorporating health equity within the guideline development process. These practices were organized under different stages of the development process, including guideline planning, evidence review, guideline development and dissemination. Included studies provided best practices from guideline producers, articles discussing health equity in current guidelines, articles addressing strategies to increase equity in the guideline implementation process, and literature reviews of promising health equity practices. INTERPRETATION: Our scoping review identified best practices to incorporate health equity considerations at each phase of guideline development. Identified practices may be used to inform equity-promoting strategies with the guideline development process; however, guideline producers should carefully consider the advantages and disadvantages of best practices when integrating health equity.

Applying the Theoretical Domains Framework to identify police, fire, and paramedic preferences for accessing mental health care in a First Responder Operational Stress Injury Clinic: a qualitative study. / Application du cadre Theoretical Domains Framework pour cerner les préférences des policiers, des pompiers et des ambulanciers en matière d'accès aux soins de santé mentale dans une clinique de traitement des blessures de stress opérationnel pour les premiers répondants : une étude qualitative.

INTRODUCTION: First responders and other public safety personnel (PSP; e.g. correctional workers, firefighters, paramedics, police, public safety communicators) are often exposed to events that have the potential to be psychologically traumatizing. Such exposures may contribute to poor mental health outcomes and a greater need to seek mental health care. However, a theoretically driven, structured qualitative study of barriers and facilitators of help-seeking behaviours has not yet been undertaken in this population. This study used the Theoretical Domains Framework (TDF) to identify and better understand critical barriers and facilitators of help-seeking and accessing mental health care for a planned First Responder Operational Stress Injury (OSI) clinic. METHODS: We conducted face-to-face, one-on-one semistructured interviews with 24 first responders (11 firefighters, five paramedics, and eight police officers), recruited using purposive and snowball sampling. Interviews were analyzed using deductive content analysis. The TDF guided study design, interview content, data collection, and analysis. RESULTS: The most reported barriers included concerns regarding confidentiality, lack of trust, cultural competency of clinicians, lack of clarity about the availability and accessibility of services, and stigma within first responder organizations. Key themes influencing help-seeking were classified into six of the TDF's 14 theoretical domains: environmental context and resources; knowledge; social influences; social/professional role and identity; emotion; and beliefs about consequences. CONCLUSION: The results identified key actions that can be utilized to tailor interventions to encourage attendance at a First Responder OSI Clinic. Such approaches include providing transparency around confidentiality, policies to ensure greater cultural competency in all clinic staff, and clear descriptions of how to access care; routinely involving families; and addressing stigma.

Protocol for a living evidence synthesis on variants of concern and COVID-19 vaccine effectiveness.

BACKGROUND: It is evident that COVID-19 will remain a public health concern in the coming years, largely driven by variants of concern (VOC). It is critical to continuously monitor vaccine effectiveness as new variants emerge and new vaccines and/or boosters are developed. Systematic surveillance of the scientific evidence base is necessary to inform public health action and identify key uncertainties. Evidence syntheses may also be used to populate models to fill in research gaps and help to prepare for future public health crises. This protocol outlines the rationale and methods for a living evidence synthesis of the effectiveness of COVID-19 vaccines in reducing the morbidity and mortality associated with, and transmission of, VOC of SARS-CoV-2. METHODS: Living evidence syntheses of vaccine effectiveness will be carried out over one year for (1) a range of potential outcomes in the index individual associated with VOC (pathogenesis); and (2) transmission of VOC. The literature search will be conducted up to May 2023. Observational and database-linkage primary studies will be included, as well as RCTs. Information sources include electronic databases (MEDLINE; Embase; Cochrane, L*OVE; the CNKI and Wangfang platforms), pre-print servers (medRxiv, BiorXiv), and online repositories of grey literature. Title and abstract and full-text screening will be performed by two reviewers using a liberal accelerated method. Data extraction and risk of bias assessment will be completed by one reviewer with verification of the assessment by a second reviewer. Results from included studies will be pooled via random effects meta-analysis when appropriate, or otherwise summarized narratively. DISCUSSION: Evidence generated from our living evidence synthesis will be used to inform policy making, modelling, and prioritization of future research on the effectiveness of COVID-19 vaccines against VOC.

Interventions to treat post-traumatic stress disorder (PTSD) in vulnerably housed populations and trauma-informed care: a scoping review.

OBJECTIVES: The goals of this study are to identify and analyse interventions that aim to treat post-traumatic stress disorder (PTSD) and complex PTSD in people who are vulnerably housed and to describe how these treatments have been delivered using trauma-informed care. DESIGN: Scoping review. SEARCH STRATEGY: We searched electronic databases including MEDLINE, Embase, PsycINFO, CINAHL, the Cochrane Library, Web of Science and PTSDpubs for published literature up to November 2021 for any studies that examined the treatment of PTSD in adults who were vulnerably housed. Websites of relevant organisations and other grey literature sources were searched to supplement the electronic database search. The characteristics and effect of the interventions were analysed. We also explored how the interventions were delivered and the elements of trauma-informed care that were described. RESULTS: 28 studies were included. We identified four types of interventions: (1) trauma focused psychotherapies; (2) non-trauma psychotherapies; (3) housing interventions and (4) pharmacotherapies. The trauma-informed interventions were small case series and the non-trauma focused therapies included four randomised controlled trials, were generally ineffective. Of the 10 studies which described trauma-informed care the most commonly named elements were physical and emotional safety, the experience of feeling heard and understood, and flexibility of choice. The literature also commented on the difficulty of providing care to this population including lack of private space to deliver therapy; the co-occurrence of substance use; and barriers to follow-up including limited length of stay in different shelters and high staff turnover. CONCLUSIONS: This scoping review identified a lack of high-quality trials to address PTSD in people who are vulnerably housed. There is a need to conduct well designed trials that take into account the unique setting of this population and which describe those elements of trauma-informed care that are most important and necessary.

Feasibility and acceptability of Narrative Exposure Therapy to treat individuals with PTSD who are homeless or vulnerably housed: a pilot randomized controlled trial.

BACKGROUND: Diagnosed PTSD rates in people who are homeless are more than double that of the general population, ranging between 21 and 53%. Complex PTSD (cPTSD) also appears to be more common than PTSD. One treatment option is Narrative Exposure Therapy (NET), a brief trauma-focused psychotherapy which attempts to place trauma within a narrative of the person's life. Our primary aim was to assess the feasibility and acceptability of recruiting people to a randomized controlled trial (RCT) of NET alone compared to NET augmented by a genealogical assessment. We hypothesized that incorporating a genealogical assessment may be more effective than NET alone in a population with predominately complex PTSD. METHODS: This pilot RCT enrolled participants who were 18 years of age or older, currently homeless or vulnerably housed, and with active symptoms of PTSD. Participants were randomized to NET alone or NET plus a genealogical assessment. Rates of referral, consent, and retention were examined as part of feasibility. Demographic and clinical data were collected at baseline. Symptoms of PTSD, drug use, and housing status were re-assessed at follow-up visits. We conducted a thematic analysis of qualitative interviews of service providers involved in the study which explored barriers and facilitators of study participation. RESULTS: Twenty-two potential participants were referred to the study, with 15 consenting to participate. Of these, one was a screen failure and 14 were randomized equally to the treatment arms. One randomized participant was withdrawn for safety. Attrition occurred primarily prior to starting therapy. Once therapy began, retention was high with 80% of participants completing all six sessions. Seven participants completed all follow-up sessions. Service providers identified a clear need for the treatment and emphasized the importance of trauma-informed care, a desire to know more about NET, and more communication about the process of referral. CONCLUSION: Recruiting participants who were vulnerably housed to an RCT of a trauma-based therapy was possible. Once therapy had started, participants were likely to stay engaged. We will incorporate the results of this trial into a conceptual model which we will test in a factorial study as part of the optimization phase of MOST. TRIAL REGISTRATION: ClinicalTrials.gov NCT03781297 . Registered: December 19, 2018.

Costs of Next-Generation Sequencing Assays in Non-Small Cell Lung Cancer: A Micro-Costing Study.

Background: Next-generation sequencing (NGS) of tumor genomes has changed and improved cancer treatment over the past few decades. It can inform clinicians on the optimal therapeutic approach in many of the solid and hematologic cancers, including non-small lung cancer (NSCLC). Our study aimed to determine the costs of NGS assays for NSCLC diagnostics. Methods: We performed a micro-costing study of four NGS assays (Trusight Tumor 170 Kit (Illumina), Oncomine Focus (Thermo Fisher), QIAseq Targeted DNA Custom Panel and QIASeq Targeted RNAscan Custom Panel (Qiagen), and KAPA HyperPlus/SeqCap EZ (Roche)) at the StemCore Laboratories, the Ottawa Hospital, Canada. We used a time-and-motion approach to measure personnel time and a pre-defined questionnaire to collect resource utilization. The unit costs were based on market prices. The cost data were reported in 2019 Canadian dollars. Results: Based on a case throughput of 500 cases per year, the per-sample cost for TruSight Tumor 170 Kit, QIASeq Targeted DNA Custom Panel and QIASeq Targeted RNAscan Custom Panel, Oncomine Focus, and HyperPlus/SeqCap EZ were CAD 1778, CAD 599, CAD 1100 and CAD 1270, respectively. The key cost drivers were library preparation (34-60%) and sequencing (31-51%), followed by data analysis (6-13%) and administrative support (2-7%). Conclusions: Trusight Tumor 170 Kit was the most expensive NGS assay for NSCLC diagnostics; however, an economic evaluation is required to identify the most cost-effective NGS assay. Our study results could help inform decisions to select a robust platform for NSCLC diagnostics from fine needle aspirates, and future economic evaluations of the NGS platforms to guide treatment selections for NSCLC patients.

Screening for depression among the general adult population and in women during pregnancy or the first-year postpartum: two systematic reviews to inform a guideline of the Canadian Task Force on Preventive Health Care.

BACKGROUND: Depression affects an individual's physical health and mental well-being and, in pregnant and postpartum women, has specific adverse short- and long-term effects on maternal, child, and family health. The aim of these two systematic reviews is to identify evidence on the benefits and harms of screening for depression compared to no screening in the general adult and pregnant and postpartum populations in primary care or non-mental health clinic settings. These reviews will inform recommendations by the Canadian Task Force on Preventive Health Care. METHODS: We searched MEDLINE, Embase, PsycINFO, CINAHL, and the Cochrane Library using a randomized controlled trial filter, where applicable, October 4, 2018, and updated to May 11, 2020. We also searched for gray literature (e.g., websites of organizations of health professionals and patients). Study selection for depression screening trials was performed first on title and abstract, followed by full-text screening. Data extraction, assessment of the risk of bias using the Cochrane risk of bias tool, and application of Grading of Recommendations Assessment, Development and Evaluation were performed by one reviewer and validated by a second reviewer. RESULTS: A total of three trials were included. All three trials were included in the general adult review, while one of the three trials was included in the pregnant and postpartum review. We did not pool results due to substantial differences between studies and high risk of bias. In the general adult review, the first trial (n = 1001) evaluated whether screening for depression in adults with acute coronary syndrome compared to usual care improves health-related quality of life, depression symptoms, or harms of screening at 6, 12, and 18 months. There were little to no differences between the groups at 18 months for the outcomes. The second trial included adults (n = 1412) undergoing initial consultation for osteoarthritis, evaluated for depression and general health (mental and physical) after initial consultation and at 3, 6, and 12 months. The physical component score was statistically significantly lower (worse health) in the screened group at 6 months; however, this difference was not significant at 3 or at 12 months. There were no clinically important or statistically significant differences for other outcomes between groups at any time. The third trial (included in both reviews) reported on 462 postpartum women. At 6 months postpartum, fewer women in the screening group were identified as possibly depressed compared to the control group (RR 0.59, 95% confidence interval (CI) 0.39 to 0.89) and mean EPDS scores were also statistically significantly lower in the screened group (standardized mean difference 0.34 lower (95% CI 0.15 to 0.52 lower)). All other outcomes did not differ between groups at follow-up. There were serious concerns about the cut-offs used for the questionnaire used to screen, diagnostic confirmation, selective outcome reporting, and the reported magnitude of effects. DISCUSSION: There are limitations of the evidence included in the reviews. There was moderate certainty in the evidence from one trial that screening for depression in the general adult population in primary care or non-mental health clinic settings likely results in little to no difference on reported outcomes; however, the evidence was uncertain from the other two included trials. The evidence is very uncertain about the effect of screening for depression in pregnant or postpartum women in primary care or non-mental health clinic settings. Well-conducted and better-reported trials are needed that meet the screening trial criteria used in this review. SYSTEMATIC REVIEW REGISTRATION: Both protocols have been registered in the International Prospective Registry of Systematic Reviews (PROSPERO) [adult: CRD42018099690 ; pregnancy and postpartum: CRD42018099689 ] and published ( https://systematicreviewsjournal.biomedcentral.com/track/pdf/10.1186/s13643-018-0930-3 ).