The Mean Delta Method: Quantifying Assessor Stringency and Leniency and Identifying Outliers in Workplace-Based Assessments.

ABSTRACT: Assessor stringency and leniency (ASL)-an assessor's tendency to award low or high scores-has a significant effect on workplace-based assessments. Outliers on this spectrum have a disproportionate effect. However, no method has been published for quantifying ASL or identifying outlier stringent or lenient assessors using workplace-based assessment data. The authors propose the mean delta method, which compares the scores that an assessor awards to trainees with those trainees' mean scores. This novel, simple method can be used to quantify ASL and identify outlier assessors without requiring specialized statistical knowledge or software. As a worked example, the mean delta method was applied to a set of end-of-shift assessments completed in a large Canadian academic emergency department from July 1, 2017, to May 31, 2018, and used to examine the net effect of ASL on learners' assessment scores. A total of 3,908 assessments were completed by 99 assessors for 151 trainees, with a median (interquartile range) of 37 (12-39) completed assessments per trainee. Using cutoff values of 1.5 and 2 standard deviations, a total of 11 and 3 outlier assessors were identified, respectively. Moreover, ASL changed overall scores by more than the mean difference between years of training for nearly 1 in 4 learners. The mean delta method was able to quantify ASL and identify outlier lenient and stringent assessors. It was also used to quantify the net effect of ASL on individual trainees. This method could be used to further study outlier assessors, to identify assessors who may benefit most from targeted coaching and feedback, and to measure changes in assessors' tendencies over time or with specific intervention.

The influence of clinical coaching teams on quality of entrustable professional activity assessments.

Background: Coaching is an important component of workplace-based assessment in competency-based medical education. Longitudinal coaching relationships have been proposed to enhance the trainee-supervisor relationship and promote high-quality assessment. Objective: The objective of this study was to determine the influence of longitudinal coaching relationships on the quality of entrustable professional activity (EPA) assessments. Methods: EPAs (n = 174) completed by emergency medicine (EM) supervisors between July 2020 and June 2021 were extracted and divided into two groups; one group consisted of EPAs completed by supervisors when a longitudinal coaching relationship existed (n = 87) and the other group consisted of EPAs completed by the same supervisors when no coaching relationship existed (n = 87). Three physicians were recruited to rate the EPAs using the Quality of Assessment and Learning (QuAL) score, a previously published measure of EPA quality. An analysis of variance was performed to compare mean QuAL scores between the groups. Linear regression analysis was conducted to examine the relationship between trainee performance (EPA rating) and EPA assessment quality (QuAL score). Results: All raters completed the survey. The mean ± SD QuAL score in the coaching relationship group (3.63 ± 0.91) was higher than the no coaching relationship group (3.51 ± 1.10) but the difference was not statistically significant (p = 0.40). Supervisor was a significant predictor of QuAL score (p = 0.012) and supervisor alone accounted for 26% of the variability in QuAL scores (R2 = 0.26). There was no significant relationship between trainee performance and EPA assessment quality. Conclusions: The presence of a longitudinal coaching relationship did not influence the quality of EPA assessments.

Assessing the utility of a novel entrustment-supervision assessment tool.

BACKGROUND: Work-based assessments (WBAs) are increasingly used to inform decisions about trainee progression. Unfortunately, WBAs often fail to discriminate between trainees of differing abilities and have poor reliability. Entrustment-supervision scales may improve WBA performance, but there is a paucity of literature directly comparing them to traditional WBA tools. METHODS: The Ottawa Emergency Department Shift Observation Tool (O-EDShOT) is a previously published WBA tool employing an entrustment-supervision scale with strong validity evidence. This pre-/post-implementation study compares the performance of the O-EDShOT with that of a traditional WBA tool using norm-based anchors. All assessments completed in 12-month periods before and after implementing the O-EDShOT were collected, and generalisability analysis was conducted with year of training, trainees within year and forms within trainee as nested factors. Secondary analysis included assessor as a factor. RESULTS: A total of 3908 and 3679 assessments were completed by 99 and 116 assessors, for 152 and 138 trainees in the pre- and post-implementation phases respectively. The O-EDShOT generated a wider range of awarded scores than the traditional WBA, and mean scores increased more with increasing level of training (0.32 vs. 0.14 points per year, p = 0.01). A significantly greater proportion of overall score variability was attributable to trainees using the O-EDShOT (59%) compared with the traditional tool (21%, p < 0.001). Assessors contributed less to overall score variability for the O-EDShOT than for the traditional WBA (16% vs. 37%). Moreover, the O-EDShOT required fewer completed assessments than the traditional tool (27 vs. 51) for a reliability of 0.8. CONCLUSION: The O-EDShOT outperformed a traditional norm-referenced WBA in discriminating between trainees and required fewer assessments to generate a reliable estimate of trainee performance. More broadly, this study adds to the body of literature suggesting that entrustment-supervision scales generate more useful and reliable assessments in a variety of clinical settings.

Unobserved Observers: Nurses' Perspectives About Sharing Feedback on the Performance of Resident Physicians.

PURPOSE: Postgraduate training programs are incorporating feedback from registered nurses (RNs) to facilitate holistic assessments of resident performance. RNs are a potentially rich source of feedback because they often observe trainees during clinical encounters when physician supervisors are not present. However, RN perspectives about sharing feedback have not been deeply explored. This study investigated RN perspectives about providing feedback and explored the facilitators and barriers influencing their engagement. METHOD: Constructivist grounded theory methodology was used in interviewing 11 emergency medicine and 8 internal medicine RNs at 2 campuses of a tertiary care academic medical center in Ontario, Canada, between July 2019 and March 2020. Interviews explored RN experiences working with and observing residents in clinical practice. Data collection and analysis were conducted iteratively. Themes were identified using constant comparative analysis. RESULTS: RNs felt they could observe authentic day-to-day behaviors of residents often unwitnessed by supervising physicians and offer unique feedback related to patient advocacy, communication, leadership, collaboration, and professionalism. Despite a strong desire to contribute to resident education, RNs were apprehensive about sharing feedback and reported barriers related to hierarchy, power differentials, and a fear of overstepping professional boundaries. Although infrequent, a key stimulus that enabled RNs to feel safe in sharing feedback was an invitation from the supervising physician to provide input. CONCLUSIONS: Perceived hierarchy in academic medicine is a critical barrier to engaging RNs in feedback for residents. Accessing RN feedback on authentic resident behaviors requires dismantling the negative effects of hierarchy and fostering a collaborative interprofessional working environment. A critical step toward this goal may require supervising physicians to model feedback-seeking behavior by inviting RNs to share feedback. Until a workplace culture is established that validates nurses' input and creates safe opportunities for them to contribute to resident education, the voices of nurses will remain unheard.

The Ottawa Emergency Department Shift Observation Tool (O-EDShOT): A New Tool for Assessing Resident Competence in the Emergency Department.

OBJECTIVES: The outcome of emergency medicine (EM) training is to produce physicians who can competently run an emergency department (ED) shift. However, there are few tools with supporting validity evidence specifically designed to assess multiple key competencies across an entire shift. The investigators developed and gathered validity evidence for a novel entrustment-based tool to assess a resident's ability to safely run an ED shift. METHODS: Through a nominal group technique, local and national stakeholders identified dimensions of performance that are reflective of a competent ED physician and are required to safely manage an ED shift. These were included as items in the Ottawa Emergency Department Shift Observation Tool (O-EDShOT), and each item was scored using an entrustment-based rating scale. The tool was implemented in 2018 at the University of Ottawa Department of Emergency Medicine, and quantitative data and qualitative feedback were collected over 6 months. RESULTS: A total of 1,141 forms were completed by 78 physicians for 45 residents. An analysis of variance demonstrated an effect of training level with statistically significant increases in mean O-EDShOT scores with each subsequent postgraduate year (p < 0.001). Scores did not vary by ED treatment area. Residents rated as able to safely run the shift had significantly higher mean ± SD scores (4.8 ± 0.3) than those rated as not able (3.8 ± 0.6; p < 0.001). Faculty and residents reported that the tool was feasible to use and facilitated actionable feedback aimed at progression toward independent practice. CONCLUSIONS: The O-EDShOT successfully discriminated between trainees of different levels regardless of ED treatment area. Multiple sources of validity evidence support the O-EDShOT as a tool to assess a resident's ability to safely run an ED shift. It can serve as a stimulus for daily observation and feedback making it practical to use within an EM residency program.

Twitter metrics complement traditional conference evaluations to evaluate knowledge translation at a National Emergency Medicine Conference.

OBJECTIVES: Conferences are designed for knowledge translation, but traditional conference evaluations are inadequate. We lack studies that explore alternative metrics to traditional evaluation metrics. We sought to determine how traditional evaluation metrics and Twitter metrics performed using data from a conference of the Canadian Association of Emergency Physicians (CAEP). METHODS: This study used a retrospective design to compare social media posts and tradition evaluations related to an annual specialty conference. A post ("tweet") on the social media platform Twitter was included if it associated with a session. We differentiated original and discussion tweets from retweets. We weighted the numbers of tweets and retweets to comprise a novel Twitter Discussion Index. We extracted the speaker score from the conference evaluation. We performed descriptive statistics and correlation analyses. RESULTS: Of a total of 3,804 tweets, 2,218 (58.3%) were session-specific. Forty-eight percent (48%) of all sessions received tweets (mean = 11.7 tweets; 95% CI of 0 to 57.5; range, 0-401), with a median Twitter Discussion Index score of 8 (interquartile range, 0 to 27). In the 111 standard presentations, 85 had traditional evaluation metrics and 71 received tweets (p > 0.05), while 57 received both. Twenty (20 of 71; 28%) moderated posters and 44% (40 of 92) posters or oral abstracts received tweets without traditional evaluation metrics. We found no significant correlation between Twitter Discussion Index and traditional evaluation metrics (R = 0.087). CONCLUSIONS: We found no correlation between traditional evaluation metrics and Twitter metrics. However, in many sessions with and without traditional evaluation metrics, audience created real-time tweets to disseminate knowledge. Future conference organizers could use Twitter metrics as a complement to traditional evaluation metrics to evaluate knowledge translation and dissemination.

Evaluating a medical directive for nurse-initiated analgesia in the Emergency Department.

OBJECTIVES: Although acute pain is a common presentation in the Emergency Department (ED), analgesics are often delayed until the patient is seen by a physician. We assessed the effect of a medical directive for nurse-initiated analgesia on time to first dose of analgesics, proportion of patients receiving analgesics in less than 30min, and total length of stay in the ED. METHODS: A medical directive for nurse-initiated analgesia was introduced in our ED in October 2011. This before-after health record review included all patients presenting to the ED with musculoskeletal back pain in 4month periods before and after implementation of the medical directive. RESULTS: A total of 524 cases were reviewed, of which 401 were included - 201 and 200 in the before and after implementation groups respectively. After implementation there was a shorter time to first dose of analgesic (mean of 118 vs 160min, p<0.001), and a higher proportion of patients receiving analgesics in the first 30min (20% vs 4%, p<0.001). However there was no difference in total proportion of patients receiving analgesics (71% vs 67%, p=0.46) or total length of stay in the ED (337 vs 323min, p=0.51). CONCLUSIONS: A medical directive for nurse-initiated analgesia in the ED was associated with significantly reduced time to the first dose of analgesic, and increased the proportion of patients receiving analgesics within 30min. We can conclude that medical directives for nurse-initiated analgesia effectively improve the timeliness and quality of care for patients with acute pain.

Dispersal in heterogeneous habitats: thresholds, spatial scales, and approximate rates of spread.

What is the effect of landscape heterogeneity on the spread rate of populations? Several spatially explicit simulation models address this question for particular cases and find qualitative insights (e.g., extinction thresholds) but no quantitative relationships. We use a time-discrete analytic model and find general quantitative relationships for the invasion threshold, i.e., the minimal percentage of suitable habitat required for population spread. We investigate how, on the relevant spatial scales, this threshold depends on the relationship between dispersal ability and fragmentation level. The invasion threshold increases with fragmentation level when there is no Allee effect, but it decreases with fragmentation in the presence of an Allee effect. We obtain simple formulas for the approximate spread rate of a population in heterogeneous landscapes from averaging techniques. Comparison with spatially explicit simulations shows an excellent agreement between approximate and true values. We apply our results to the spread of trees and give some implications for the control of invasive species.