Convergent adaptation of true crabs (Decapoda: Brachyura) to a gradient of terrestrial environments.

For much of terrestrial biodiversity, the evolutionary pathways of adaptation from marine ancestors are poorly understood, and have usually been viewed as a binary trait. True crabs, the decapod crustacean infraorder Brachyura, comprise over 7,600 species representing a striking diversity of morphology and ecology, including repeated adaptation to non-marine habitats. Here, we reconstruct the evolutionary history of Brachyura using new and published sequences of 10 genes for 344 tips spanning 88 of 109 brachyuran families. Using 36 newly vetted fossil calibrations, we infer that brachyurans most likely diverged in the Triassic, with family-level splits in the late Cretaceous and early Paleogene. By contrast, the root age is underestimated with automated sampling of 328 fossil occurrences explicitly incorporated into the tree prior, suggesting such models are a poor fit under heterogeneous fossil preservation. We apply recently defined trait-by-environment associations to classify a gradient of transitions from marine to terrestrial lifestyles. We estimate that crabs left the marine environment at least seven and up to 17 times convergently, and returned to the sea from non-marine environments at least twice. Although the most highly terrestrial- and many freshwater-adapted crabs are concentrated in Thoracotremata, Bayesian threshold models of ancestral state reconstruction fail to identify shifts to higher terrestrial grades due to the degree of underlying change required. Lineages throughout our tree inhabit intertidal and marginal marine environments, corroborating the inference that the early stages of terrestrial adaptation have a lower threshold to evolve. Our framework and extensive new fossil and natural history datasets will enable future comparisons of non-marine adaptation at the morphological and molecular level. Crabs provide an important window into the early processes of adaptation to novel environments, and different degrees of evolutionary constraint that might help predict these pathways.

Digital Impact Factor: A Quality Index for Educational Blogs and Podcasts in Emergency Medicine and Critical Care.

STUDY OBJECTIVE: Given the popularity of educational blogs and podcasts in medicine, learners and educators need tools to identify trusted and impactful sites. The Social Media Index was a multi-sourced formula to rank the effect of emergency medicine and critical care blogs. In 2022, a key data point for the Social Media Index became unavailable. This bibliometric study aimed to develop a new measure, the Digital Impact Factor, as a replacement. METHODS: The Digital Impact Factor incorporated modern measures of website authority and reach. This formula was applied to a cross-sectional study of active emergency medicine and critical care blogs and podcasts. For each website, we generated a Digital Impact Factor score based on Ahrefs Domain Rating and the follower count of the websites' pages from 8 social media platforms. A series of Spearman correlations provided evidence of association by comparing a rank-ordered list to rank lists derived from the Social Media Index over the last 5 years. The Bland-Altman analysis assessed for agreement. RESULTS: The authors identified 88 relevant websites with a median Ahrefs Domain Rating of 28 (range 0 to 71, maximum 100) and total social media followership count across 8 platforms of 1,828,557. The Domain Rating and individual social media followership scores were normalized based on the highest recorded values to yield the Digital Impact Factor (median 4.57; range 0.02 to 9.50, maximum 10). The correlation between the 2022 Digital Impact Factor and the 2021 Social Media Index was 0.94 (95% confidence interval 0.89 to 0.97; p<.001; n=41 rankings correlated), suggesting that they measure similar constructs. The Bland-Altman plot also demonstrated fair agreement between the 2 scores. CONCLUSION: The Digital Impact Factor is a measure of the relative effect of educational blogs and podcasts within emergency medicine and critical care.

A comprehensive molecular phylogeny of the brachyuran crab superfamily Xanthoidea provides novel insights into its systematics and evolutionary history.

Maximum likelihood and Bayesian phylogenies for the brachyuran crab superfamily Xanthoidea were estimated based on three mitochondrial and four nuclear genes to infer phylogenetic relationships and inform taxonomy. Habitat data was then used in conjunction with several diversification rates analyses (BAMM, BiSSE, HiSSE, and FiSSE) to test evolutionary hypotheses regarding the diversification of xanthoid crabs. The phylogenies presented are the most comprehensive to date in terms of global diversity as they include all four constituent families (Xanthidae, Panopeidae, Pseudorhombilidae, and Linnaeoxanthidae) spanning all oceans in which xanthoid crabs occur. Six Xanthoidea families are recognised. Panopeidae and Xanthidae sensu stricto are the two largest family-level clades, which are reciprocally monophyletic. Pseudorhombilidae is nested within and is here treated as a subfamily of Panopeidae. Former subfamilies or tribes of Xanthidae sensu lato are basally positioned clades in Xanthoidea and are here assigned family-level ranks: Garthiellidae, Linnaeoxanthidae, Antrocarcinidae, and Nanocassiopidae. The genera Linnaeoxantho and Melybia were recovered in separate clades with Linnaeoxantho being sister to the family Antrocarcinidae, while Melybia was recovered within the family Panopeidae. The existing subfamily classification of Xanthidae and Panopeidae is drastically restructured with 20 xanthid and four panopeid subfamilies provisionally recognised. Diversification-time analyses inferred the origin of Xanthoidea and Garthiellidae in the Eocene, while the other families originated during the Oligocene. The majority of genus- and species-level diversification took place during the Miocene. Ancestral state reconstruction based on depth of occurrence (shallow vs. deep water) shows some ambiguity for the most recent common ancestor of Xanthoidea and Nanocassiopidae. The most recent common ancestors of Antrocarcinidae and Panopeidae were likely deep-water species, while those of Garthiellidae and Xanthidae were probably shallow-water species. Several shifts in net diversification rates were detected but they were not associated with depth-related habitat transitions.

Identifying Social Media Competencies for Health Professionals: An International Modified Delphi Study to Determine Consensus for Curricular Design.

STUDY OBJECTIVE: The use of social media by health professionals is widespread. However, there is a lack of training to support the effective use of these novel platforms that account for the nuances of an effective health and research communication. We sought to identify the competencies needed by health care professionals to develop an effective social media presence as a medical professional, with the goal of building a social media curriculum. METHODS: We conducted a modified Delphi study, utilizing Kraiger's Knowledge, Skills, and Attitudes framework to identify appropriate items for inclusion in a social media curriculum targeted at health care professionals. Experts in this space were defined as health care professionals who had delivered workshops, published papers, or developed prominent social media tools/accounts. They were recruited through a multimodal campaign to complete a series of 3 survey rounds designed to build consensus. In keeping with prior studies, a threshold of 80% endorsement was used for inclusion in the final list of items. RESULTS: Ninety-eight participants met the expert criteria and were invited to participate in the study. Of the 98 participants, 92 (94%) experts completed the first round; of the 92 experts who completed the first round, 83 (90%) completed the second round; and of the 83 experts who completed the second round, 81 (98%) completed the third round of the Delphi study. Eighteen new items were suggested in the first survey and incorporated into the study. A total of 46 items met the 80% inclusion threshold. CONCLUSION: We identified 46 items that were believed to be important for health care professionals using social media. This list should inform the development of curricular activities and objectives.

Becoming a deliberately developmental organization: Using competency based assessment data for organizational development.

Medical education is situated within health care and educational organizations that frequently lag in their use of data to learn, develop, and improve performance. How might we leverage competency-based medical education (CBME) assessment data at the individual, program, and system levels, with the goal of redefining CBME from an initiative that supports the development of physicians to one that also fosters the development of the faculty, administrators, and programs within our organizations? In this paper we review the Deliberately Developmental Organization (DDO) framework proposed by Robert Kegan and Lisa Lahey, a theoretical framework that explains how organizations can foster the development of their people. We then describe the DDO's conceptual alignment with CBME and outline how CBME assessment data could be used to spur the transformation of health care and educational organizations into digitally integrated DDOs. A DDO-oriented use of CBME assessment data will require intentional investment into both the digitalization of assessment data and the development of the people within our organizations. By reframing CBME in this light, we hope that educational and health care leaders will see their investments in CBME as an opportunity to spur the evolution of a developmental culture.

Capturing outcomes of competency-based medical education: The call and the challenge.

There is an urgent need to capture the outcomes of the ongoing global implementation of competency-based medical education (CBME). However, the measurement of downstream outcomes following educational innovations, such as CBME is fraught with challenges stemming from the complexities of medical training, the breadth and variability of inputs, and the difficulties attributing outcomes to specific educational elements. In this article, we present a logic model for CBME to conceptualize an impact pathway relating to CBME and facilitate outcomes evaluation. We further identify six strategies to mitigate the challenges of outcomes measurement: (1) clearly identify the outcome of interest, (2) distinguish between outputs and outcomes, (3) carefully consider attribution versus contribution, (4) connect outcomes to the fidelity and integrity of implementation, (5) pay attention to unanticipated outcomes, and (6) embrace methodological pluralism. Embracing these challenges, we argue that careful and thoughtful evaluation strategies will move us forward in answering the all-important question: Are the desired outcomes of CBME being achieved?

Growth mindset in competency-based medical education.

The ongoing adoption of competency-based medical education (CBME) across health professions training draws focus to learner-centred educational design and the importance of fostering a growth mindset in learners, teachers, and educational programs. An emerging body of literature addresses the instructional practices and features of learning environments that foster the skills and strategies necessary for trainees to be partners in their own learning and progression to competence and to develop skills for lifelong learning. Aligned with this emerging area is an interest in Dweck's self theory and the concept of the growth mindset. The growth mindset is an implicit belief held by an individual that intelligence and abilities are changeable, rather than fixed and immutable. In this paper, we present an overview of the growth mindset and how it aligns with the goals of CBME. We describe the challenges associated with shifting away from the fixed mindset of most traditional medical education assumptions and practices and discuss potential solutions and strategies at the individual, relational, and systems levels. Finally, we present future directions for research to better understand the growth mindset in the context of CBME.

Outcomes of competency-based medical education: A taxonomy for shared language.

As the global transformation of postgraduate medical training continues, there are persistent calls for program evaluation efforts to understand the impact and outcomes of competency-based medical education (CBME) implementation. The measurement of a complex educational intervention such as CBME is challenging because of the multifaceted nature of activities and outcomes. What is needed, therefore, is an organizational taxonomy to both conceptualize and categorize multiple outcomes. In this manuscript we propose a taxonomy that builds on preceding works to organize CBME outcomes across three domains: focus (educational, clinical), level (micro, meso, macro), and timeline (training, transition to practice, practice). We also provide examples of how to conceptualize outcomes of educational interventions across medical specialties using this taxonomy. By proposing a shared language for outcomes of CBME, we hope that this taxonomy will help organize ongoing evaluation work and catalyze those seeking to engage in the evaluation effort to help understand the impact and outcomes of CBME.

Communication, learning and assessment: Exploring the dimensions of the digital learning environment.

Advances in technology make it possible to supplement in-person teaching activities with digital learning, use electronic records in patient care, and communicate through social media. This relatively new "digital learning environment" has changed how medical trainees learn, participate in patient care, are assessed, and provide feedback. Communication has changed with the use of digital health records, the evolution of interdisciplinary and interprofessional communication, and the emergence of social media. Learning has evolved with the proliferation of online tools such as apps, blogs, podcasts, and wikis, and the formation of virtual communities. Assessment of learners has progressed due to the increasing amounts of data being collected and analyzed. Digital technologies have also enhanced learning in resource-poor environments by making resources and expertise more accessible. While digital technology offers benefits to learners, the teachers, and health care systems, there are concerns regarding the ownership, privacy, safety, and management of patient and learner data. We highlight selected themes in the domains of digital communication, digital learning resources, and digital assessment and close by providing practical recommendations for the integration of digital technology into education, with the aim of maximizing its benefits while reducing risks.

The clinical learning environment.

Learning in a clinical context is foundational in the training of health professionals; there is simply no alternative. The subject of the clinical learning environment (CLE) is at the forefront of discussions. In this introduction to a themed issue on the CLE, we present an expanded conceptual model that approaches the CLE through six different lenses, termed "avenues:" architectural, digital, diversity and inclusion, education, psychological, and sociocultural, with each avenue represented by a paper. The aim is to facilitate dialog around the contributions of different academic disciplines to research on the CLE. Collectively the papers highlight the overlap between the various "avenues" in how they influence each other, and how they collectively have shaped the work to understand and improve the CLE. The expectation is that the various avenues can add to existing knowledge and create new ideas for interventions to improve the clinical learning environment across nations for learners and teachers with the ultimate aim of improving patient care. Research and efforts to improve the CLE are critical to learning, professional socialization and well-being for trainees as they learn and participate in patient care, and to the quality of care they will deliver over decades of practice after graduation.

The Social Media Index as an Indicator of Quality for Emergency Medicine Blogs: A METRIQ Study.

STUDY OBJECTIVE: Online educational resources such as blogs are increasingly used for education by emergency medicine clinicians. The Social Media Index was developed to quantify their relative impact. The Medical Education Translational Resources: Indicators of Quality (METRIQ) study was conducted in part to determine the association between the Social Media Index score and quality as measured by gestalt and previously derived quality instruments. METHODS: Ten blogs were randomly selected from a list of emergency medicine and critical care Web sites. The 2 most recent clinically oriented blog posts published on these blogs were evaluated with gestalt, the Academic Life in Emergency Medicine Approved Instructional Resources (ALiEM AIR) score, and the METRIQ-8 score. Volunteer raters (including medical students, emergency medicine residents, and emergency medicine attending physicians) were identified with a multimodal recruitment methodology. The Social Media Index was calculated in February 2016, November 2016, April 2017, and December 2017. Pearson's correlations were calculated between the Social Media Index and the average rater gestalt, ALiEM AIR score, and METRIQ-8 score. RESULTS: A total of 309 of 330 raters completed all ratings (93.6%). The Social Media Index correlated moderately to strongly with the mean rater gestalt ratings (range 0.69 to 0.76) and moderately with the mean rater ALiEM AIR score (range 0.55 to 0.61) and METRIQ-8 score (range 0.53 to 0.57) during the month of the blog post's selection and for 2 years after. CONCLUSION: The Social Media Index's correlation with multiple quality evaluation instruments over time supports the hypothesis that it is associated with overall Web site quality. It can play a role in guiding individuals to high-quality resources that can be reviewed with critical appraisal techniques.

Quality Evaluation Scores are no more Reliable than Gestalt in Evaluating the Quality of Emergency Medicine Blogs: A METRIQ Study.

Construct: We investigated the quality of emergency medicine (EM) blogs as educational resources. PURPOSE: Online medical education resources such as blogs are increasingly used by EM trainees and clinicians. However, quality evaluations of these resources using gestalt are unreliable. We investigated the reliability of two previously derived quality evaluation instruments for blogs. APPROACH: Sixty English-language EM websites that published clinically oriented blog posts between January 1 and February 24, 2016, were identified. A random number generator selected 10 websites, and the 2 most recent clinically oriented blog posts from each site were evaluated using gestalt, the Academic Life in Emergency Medicine (ALiEM) Approved Instructional Resources (AIR) score, and the Medical Education Translational Resources: Impact and Quality (METRIQ-8) score, by a sample of medical students, EM residents, and EM attendings. Each rater evaluated all 20 blog posts with gestalt and 15 of the 20 blog posts with the ALiEM AIR and METRIQ-8 scores. Pearson's correlations were calculated between the average scores for each metric. Single-measure intraclass correlation coefficients (ICCs) evaluated the reliability of each instrument. RESULTS: Our study included 121 medical students, 88 EM residents, and 100 EM attendings who completed ratings. The average gestalt rating of each blog post correlated strongly with the average scores for ALiEM AIR (r = .94) and METRIQ-8 (r = .91). Single-measure ICCs were fair for gestalt (0.37, IQR 0.25-0.56), ALiEM AIR (0.41, IQR 0.29-0.60) and METRIQ-8 (0.40, IQR 0.28-0.59). CONCLUSION: The average scores of each blog post correlated strongly with gestalt ratings. However, neither ALiEM AIR nor METRIQ-8 showed higher reliability than gestalt. Improved reliability may be possible through rater training and instrument refinement.

Individual Gestalt Is Unreliable for the Evaluation of Quality in Medical Education Blogs: A METRIQ Study.

STUDY OBJECTIVE: Open educational resources such as blogs are increasingly used for medical education. Gestalt is generally the evaluation method used for these resources; however, little information has been published on it. We aim to evaluate the reliability of gestalt in the assessment of emergency medicine blogs. METHODS: We identified 60 English-language emergency medicine Web sites that posted clinically oriented blogs between January 1, 2016, and February 24, 2016. Ten Web sites were selected with a random-number generator. Medical students, emergency medicine residents, and emergency medicine attending physicians evaluated the 2 most recent clinical blog posts from each site for quality, using a 7-point Likert scale. The mean gestalt scores of each blog post were compared between groups with Pearson's correlations. Single and average measure intraclass correlation coefficients were calculated within groups. A generalizability study evaluated variance within gestalt and a decision study calculated the number of raters required to reliably (>0.8) estimate quality. RESULTS: One hundred twenty-one medical students, 88 residents, and 100 attending physicians (93.6% of enrolled participants) evaluated all 20 blog posts. Single-measure intraclass correlation coefficients within groups were fair to poor (0.36 to 0.40). Average-measure intraclass correlation coefficients were more reliable (0.811 to 0.840). Mean gestalt ratings by attending physicians correlated strongly with those by medical students (r=0.92) and residents (r=0.99). The generalizability coefficient was 0.91 for the complete data set. The decision study found that 42 gestalt ratings were required to reliably evaluate quality (>0.8). CONCLUSION: The mean gestalt quality ratings of blog posts between medical students, residents, and attending physicians correlate strongly, but individual ratings are unreliable. With sufficient raters, mean gestalt ratings provide a community standard for assessment.

Emergency Medicine and Critical Care Blogs and Podcasts: Establishing an International Consensus on Quality.

STUDY OBJECTIVE: This study identified the most important quality indicators for online educational resources such as blogs and podcasts. METHODS: A modified Delphi process that included 2 iterative surveys was used to build expert consensus on a previously defined list of 151 quality indicators divided into 3 themes: credibility, content, and design. Aggregate social media indicators were used to identify an expert population of editors from a defined list of emergency medicine and critical care blogs and podcasts. Survey 1 consisted of the quality indicators and a 7-point Likert scale. The mean score for each quality indicator was included in survey 2, which asked participants whether to "include" or "not include" each quality indicator. The cut point for consensus was defined at greater than 70% "include." RESULTS: Eighty-three percent (20/24) of bloggers and 90.9% (20/22) of podcasters completed survey 1 and 90% (18/20) of bloggers and podcasters completed survey 2. The 70% inclusion criteria were met by 44 and 80 quality indicators for bloggers and podcasters, respectively. Post hoc, a 90% cutoff was used to identify a list of 14 and 26 quality indicators for bloggers and podcasters, respectively. CONCLUSION: The relative importance of quality indicators for emergency medicine blogs and podcasts was determined. This will be helpful for resource producers trying to improve their blogs or podcasts and for learners, educators, and academic leaders assessing their quality. These results will inform broader validation studies and attempts to develop user-friendly assessment instruments for these resources.

Personal reflections on exploring social media in medicine.

Social media is difficult to explain to a physician who has never used it. The medical literature on its pitfalls and abuses has overshadowed its positive applications and made many physicians wary of it. While I was initially reluctant to develop my own presence on social media, since embracing it as a tool for teaching and learning I have developed a different perspective. I see it as a tool that can be used positively or negatively. Much like a megaphone, it can amplify our voice so that the impact of our work can extend beyond the borders of our institutions and countries. Aided by the guidance and support of mentors who used social media before and alongside me, it has helped me to become a more competent, professional, engaged, and impactful physician. Within this article I will share my story to illustrate the many ways that social media can be used to enhance the profession of medicine.

Quality indicators for blogs and podcasts used in medical education: modified Delphi consensus recommendations by an international cohort of health professions educators.

BACKGROUND: Quality assurance concerns about social media platforms used for education have arisen within the medical education community. As more trainees and clinicians use resources such as blogs and podcasts for learning, we aimed to identify quality indicators for these resources. A previous study identified 151 potentially relevant quality indicators for these social media resources. OBJECTIVE: To identify quality markers for blogs and podcasts using an international cohort of health professions educators. METHODS: A self-selected group of 44 health professions educators at the 2014 International Conference on Residency Education participated in a Social Media Summit during which a modified Delphi consensus study was conducted to determine which of the 151 quality indicators met the a priori ≥90% inclusion threshold. RESULTS: Thirteen quality indicators classified into the domains of credibility (n=8), content (n=4) and design (n=1) met the inclusion threshold. CONCLUSIONS: The quality indicators that were identified may serve as a foundation for further research on quality indicators of social media-based medical education resources and prompt discussion of their legitimacy as a form of educational scholarship.

Global emergency medicine journal club: social media responses to the march 2014 annals of emergency medicine journal club on targeted temperature management.

In March 2014, Annals of Emergency Medicine continued a successful collaboration with an academic Web site, Academic Life in Emergency Medicine (ALiEM), to host another Global Emergency Medicine Journal Club session featuring the 2013 New England Journal of Medicine article "Targeted Temperature Management at 33°C (91.4°F) Versus 36°C (96.8°F) After Cardiac Arrest" by Nielsen et al. This online journal club used Twitter conversations, a live videocast with the authors, and detailed discussions on the ALiEM Web site's comment section. This summary article details the community discussion, shared insights, and analytic data generated using this novel, multiplatform approach.

Free Open Access Meducation (FOAM): the rise of emergency medicine and critical care blogs and podcasts (2002-2013).

Disruptive technologies are revolutionising continuing professional development in emergency medicine and critical care (EMCC). Data on EMCC blogs and podcasts were gathered prospectively from 2002 through November 2013. During this time there was a rapid expansion of EMCC websites, from two blogs and one podcast in 2002 to 141 blogs and 42 podcasts in 2013. This paper illustrates the explosive growth of EMCC websites and provides a foundation that will anchor future research in this burgeoning field.