Integrating clinicians’ opinion in the Bayesian meta-analysis of observational studies: the case of risk factors for falls in community-dwelling older people

Background: despite the widespread application of Bayesian methods in meta-analysis, the incorporation of clinical informative priors based upon expert opinion is rare. Methods: a questionnaire to elicit beliefs about five risk factors for falls in older people was administered to a sample of geriatricians and general practitioners (GPs). The experts were asked to provide a point estimate and upper and lower limits of each relative risk. The elicited opinions were translated into different prior distributions and included in a Bayesian meta-analysis of prospective studies. Frequentist, Bayesian non-informative and fully Bayesian approaches were compared. Results: almost all the clinicians provided the requested information. In most cases, the variability across published studies was greater or similar to that across clinicians. Geriatricians provided more consistent estimates than GPs. When fewer studies were available, the use of the informative prior provided by geriatricians reduced the width of the credibility interval with respect to the frequentist or Bayesian non-informative approaches. Enthusiastic and skeptical priors led to results strongly driven by the prior distribution. Conclusions: this study presents a feasible method for belief elicitation and Bayesian priors’ assessment. The inclusion of external information showed to be useful when only few and/or heterogeneous studies were available from the literature

European Commission Initiative on Breast Cancer – ECIBC: Organisation of project guiding and support meetings report – 2014

The Joint Research Centre (JRC) coordinates the European Commission's Initiative on Breast Cancer (ECIBC). The ECBIC has two main tasks: 1) the development of a voluntary European quality assurance (QA) scheme for breast cancer services based on an EU legislative framework on accreditation covering all stages and aspects of care and 2) the set-up of the evidence base for such a QA scheme via (i) the development of the new European guidelines for breast cancer screening and diagnosis and (ii) a platform for evidence-based breast cancer guidelines covering stages other than screening and diagnosis (e.g. rehabilitation, follow-up, psychological support and palliative care). Preparation for the ECIBC included literature searches, stakeholder meetings and consensus building workshops and a European-wide survey to gather information on the status and organisation of breast cancer screening and care. This report is a summary of the meetings held in 2014.JRC.I.2-Public Health Policy Suppor

A voluntary accreditation scheme for Breast Cancer Services & the further development of European Breast Cancer Guidelines: project workshops report. Workshop for Experts: From 21 to 22 February 2013; Workshop for Countries Delegates: From 13 to 14 March 2013

Two Workshops were organised in order to inform and involve stakeholders about the task the JRC has been given of updating existing European Guidelines on Quality Assurance in Breast Cancer Screening and Diagnosis and, in parallel, to develop a quality assurance scheme for breast cancer services. Participants at both workshops, coming from different areas of competence and of interest (e.g. clinical experts, patients' associations, guidelines methodologists, policy makers, screening programme managers, etc), were asked to contribute with their own experience and knowledge and to provide input on project pillars and modalities to coordinated and optimise the direction of the project. This report not only includes the narration of the events, but also the main conclusions derived from a thorough discussion on the main aspects of the project and their impact on the planning of activities for meeting the requirements of the two tasks.JRC.I.2-Public Health Policy Suppor

European Commission Initiative on Breast Cancer (ECIBC): Plenary 2016

The European Commission Initiative on Breast Cancer (ECIBC) Plenaries are an opportunity to inform representatives from the 28 EU Member States and 7 other countries participating in the ECIBC, as well as patients and other stakeholders, policymakers, and the scientific and health policy communities, about the aims, activities and achievements of the ECIBC. They also provide a platform for the exchange of ideas, feedback and input into the ECIBC. The 2016 ECIBC Plenary, entitled “When science and policy collaborate for health”, took place on 24-25 November in Varese, Italy. Its main focus was the implementation of both the voluntary European Quality Assurance scheme for Breast Cancer Services (European QA scheme) and the European guidelines for breast cancer screening and diagnosis (European Breast Guidelines). In this context, the first concrete results were presented, with the launch of the first four European Breast Guidelines recommendations on screening. The first day of the Plenary was dedicated to the JRC informing the audience about the various tools that ECIBC is developing. The second day instead, gave the floor to the audience, who informed the JRC of their views in terms of the challenges and opportunities related to implementing the ECIBC in the respective European countries. The event opened with welcome speeches from the European Commission’s Joint Research Centre (JRC), a moving presentation from a breast cancer survivor and reflections on how to ensure science makes its way into policy. The JRC and ECIBC working group members then brought the audience up to date with progress on the European QA scheme, the European Breast Guidelines, as well as the Guidelines Platform, the template for training on digital mammography, as well as about how ECIBC plans to monitor its impact. Participants also received in-depth explanations of the accreditation framework selected for the European QA scheme, as well as two countries’ experiences of using the ISO 15189 standard for accreditation, which is foreseen for the European QA scheme. The second day saw a focus on the individual countries represented at the Plenary. Presentations assessed how the European QA scheme could potentially fit into three different health systems (Scotland, the Netherlands, Romania), while a special breakout session gave national representatives from the 27 countries present (out of the 35 countries participating in the ECIBC) the chance to discuss implementation of the European Breast Guidelines and the European QA scheme themselves. The results, collected through questionnaires, fed into a roundtable debate on what needs to be done at European and national level to ensure ECIBC implementation. The meeting was closed by Member of the European Parliament and President of MEPs Against Cancer (MACs), Alojz Peterle. An evaluation of the event revealed that the third ECIBC Plenary met its aims to inform stakeholders: all responding participants felt that the event succeeded in providing a comprehensive overview of how the ECIBC is progressing, and what the challenges are. Discussions also provided the JRC with valuable information and feedback. The fourth ECIBC Plenary will take place once the results from piloting the European QA scheme are available.JRC.F.1-Health in Societ

GRADE workshop: grading the quality of evidence and strength of recommendations

In December 2013, the Public Health Policy Support Unit at the European Commission's Joint Research Centre organised a two-day workshop on developing evidence-based guidelines and healthcare recommendations using GRADE. GRADE stands for Grading of Recommendations Assessment, Development and Evaluation. It is a method for grading the quality of evidence and going from this evidence to the corresponding healthcare recommendation. The aims of the workshop were: 1) To explain how to develop evidence-based guidelines and health recommendations using the GRADE approach. 2) To build a template for future trainings organised by the JRC on the guideline development process. Twenty participants, without experience using GRADE, attended the workshop—including 14 JRC staff, as well as representatives from the Directorate General for Health and Consumers (DG SANCO), the European Centre for Disease Prevention and Control (ECDC) and various external institutions. The workshop consisted of lectures on the theory behind guidelines development, group work and computer-based exercises. Organisers and participants deemed the training a success and the Public Health Policy Support Unit is planning additional GRADE-oriented workshops in the future.JRC.I.2-Public Health Policy Suppor

Provision of follow‑up care for women with a history of breast cancer following the 2016 position paper by the Italian Group for Mammographic Screening and the Italian College of Breast Radiologists by SIRM: a survey of Senonetwork Italian breast centres

Introduction In 2016, the Italian Group for Mammography Screening and the Italian College of Breast Radiologists by the Italian Society of Medical and Interventional Radiology recommended that screening programmes and specialist breast centres actively invite women with a history of breast cancer to follow-up imaging. Objective A survey of breast centres associated with Senonetwork, the Italian network of breast cancer services, has ofered the opportunity to assess the implementation of this recommendation. Methods A national, cross-sectional, voluntary, online survey was developed, pre-tested, and administered during the months July–October 2020. Five of the 73 questionnaire items concerned breast cancer follow-up. Results The response rate was 82/128 (65%). Of the 82 respondent centres, 69 (84%) were involved in a screening programme. Fifty-six (68%) reported the presence of a programme of active invitation to breast cancer follow-up targeted at patients living in their catchment area, with a signifcant north-to-south gradient. Four centres (5%) reported that the screening programme was responsible for actively initiating follow-up during the 10-year period since diagnosis. Only after 10 years did the proportion increase moderately. Conclusion Screening programmes have still a marginal role in active breast cancer follow-up

Report on the call for feedback about The Scope of the European guidelines for breast cancer screening and diagnosis: European Commission Initiative on Breast Cancer

In 2015, the European Commission Initiative on Breast Cancer (ECIBC) started the development of the European guidelines for breast cancer screening and diagnosis (henceforth the European Breast Guidelines) under the auspices of the Directorate-General for Health and Food Safety (DG SANTE) and the technical and scientific coordination of the Directorate-General Joint Research Centre (JRC). To support the JRC in this task, a Guidelines Development Group (GDG), consisting of independent experts and individuals, was established. The European Breast Guidelines’ scope (The Scope) represented the first output of the development process of the European Breast Guidelines. Via a public call for feedback, stakeholders and individual citizens were invited to provide their feedback on The Scope. The call for feedback was open from 18 December 2015 to 17 January 2016 and an online questionnaire was made available on the ECIBC web hub via the EU Survey platform. The JRC received a total of 82 valid responses, from 40 individuals from 18 different countries and from 42 organisations from 20 different countries. During a meeting held in Varese (Italy) in March 2016, the GDG discussed the new version of The Scope which was prepared taking into account the results of the call for feedback. The Scope was finalised and approved by the GDG after some minor editing on 6 September 2016 and was later made publicly available together with this report.JRC.F.1-Health in Societ

Estimating SARS-CoV-2 transmission in educational settings: a retrospective cohort study

Background School closures and distance learning have been extensively adopted to counter the COVID-19 pandemic. However, the contribution of school transmission to the spread of SARS-CoV-2 remains poorly quantified. Methods We analyzed transmission patterns associated with 976 SARS-CoV-2 exposure events, involving 460 positive individuals, as identified in early 2021 through routine surveillance and an extensive screening conducted on students, school personnel, and their household members in a small Italian municipality. In addition to population screenings and contact-tracing operations, reactive closures of class and schools were implemented. Results From the analysis of 152 clear infection episodes and 584 exposure events identified by epidemiological investigations, we estimated that approximately 50%, 21%, and 29% of SARS-CoV-2 transmission was associated with household, school, and community contacts, respectively. We found substantial transmission heterogeneities, with 20% positive individuals causing 75% to 80% of ascertained infection episodes. A higher proportion of infected individuals causing onward transmission was found among students (46.2% vs. 25%, on average), who also caused a markedly higher number of secondary cases (mean: 1.03 vs. 0.35). By reconstructing likely transmission chains from the entire set of exposures identified during contact-tracing operations, we found that clusters originated from students or school personnel were associated with a larger average cluster size (3.32 vs. 1.15) and a larger average number of generations in the transmission chain (1.56 vs. 1.17). Conclusions Uncontrolled SARS-CoV-2 transmission at school could disrupt the regular conduct of teaching activities, likely seeding the transmission into other settings, and increasing the burden on contact-tracing operations

Estimating SARS-CoV-2 transmission in educational settings: a retrospective cohort study

Background School closures and distance learning have been extensively adopted to counter the COVID-19 pandemic. However, the contribution of school transmission to the spread of SARS-CoV-2 remains poorly quantified. Methods We analyzed transmission patterns associated with 976 SARS-CoV-2 exposure events, involving 460 positive individuals, as identified in early 2021 through routine surveillance and an extensive screening conducted on students, school personnel, and their household members in a small Italian municipality. In addition to population screenings and contact-tracing operations, reactive closures of class and schools were implemented. Results From the analysis of 152 clear infection episodes and 584 exposure events identified by epidemiological investigations, we estimated that approximately 50%, 21%, and 29% of SARS-CoV-2 transmission was associated with household, school, and community contacts, respectively. We found substantial transmission heterogeneities, with 20% positive individuals causing 75% to 80% of ascertained infection episodes. A higher proportion of infected individuals causing onward transmission was found among students (46.2% vs. 25%, on average), who also caused a markedly higher number of secondary cases (mean: 1.03 vs. 0.35). By reconstructing likely transmission chains from the entire set of exposures identified during contact-tracing operations, we found that clusters originated from students or school personnel were associated with a larger average cluster size (3.32 vs. 1.15) and a larger average number of generations in the transmission chain (1.56 vs. 1.17). Conclusions Uncontrolled SARS-CoV-2 transmission at school could disrupt the regular conduct of teaching activities, likely seeding the transmission into other settings, and increasing the burden on contact-tracing operations

European Commission Initiative on Breast Cancer: Concept document

The European Commission Initiative on Breast Cancer (ECIBC) is aimed at ensuring and harmonising breast cancer services quality across European countries. It is coordinated by Commission’s Joint Research Centre, under the supervision of the Directorate-General Health and Food Safety. This document describes the background of the initiative, its general goals and objectives, and its foreseen outcomes.JRC.F.1-Health in Societ