Hydroxyapatite-Coated Femoral Stems in Primary Total Hip Arthroplasty: An Updated Meta-Analysis.

BACKGROUND: Most primary total hip arthroplasties (THAs) performed in the United States utilize cementless fixation with porous or hydroxyapatite (HA) coating. A previous meta-analysis comparing HA-coated versus non-HA-coated stems in primary THA published in 2013 found no significant difference between the 2. However, an updated analysis of the current literature is needed to assess the potential benefit of HA-coated stems in primary THA. METHODS: Various libraries were searched through May 2022 according to Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines. Studies included were randomized controlled trials comparing HA-coated femoral stems to non-HA-coated stems in primary THA. Outcomes included Harris Hip Score (HHS), endosteal bone formation, radiolucent lines, linear wear rate, revision for aseptic loosening, thigh pain, and heterotopic ossification. RESULTS: There were significantly fewer revisions for aseptic loosening (P = .004) and decreased postoperative thigh pain (P = .03) for patients who have with HA-coated stems. There was no significant difference in HHS (P = .20), endosteal bone formation (P = .96), radiolucent lines (P = .75), linear wear rate (P = .41), or heterotopic ossification (P = .71) between HA-coated and non-HA-coated stems. CONCLUSION: We found that HA-coated femoral stems in primary THA led to significantly fewer stem revisions for aseptic loosening and less postoperative thigh pain compared to non-HA-coated stems. These findings suggest HA-coated femoral stems should be preferred over non-HA-coated femoral stems in primary THA.

Surgical education in urogynecology from low fidelity to virtual reality: Systematic review.

IMPORTANCE: Increase dissemination of educational tools in urogynecology. OBJECTIVE: Describe the effectiveness and public availability of published educational tools for urogynecologic surgery. STUDY DESIGN: A systematic review was conducted by searching MEDLINE, EMBASE, Cochrane Library, and Web of Science from 1946 to 2023 for articles describing educational tools in urogynecology. There were no restrictions on study design or language. Data were extracted in duplicate using a standardized piloted extraction form, and outcomes were combined descriptively. RESULTS: 2997 titles, 457 abstracts, and 97 full-text articles were analyzed. Of the 97 interventions included, 43 were manuscripts and 54 were conference abstracts. The median study quality was low, with a moderate risk of bias. Six intervention categories were identified: didactics, animal models, cadavers, static models, extended reality (XR), and multimodal workshops. Didactics were subjectively useful for teaching pelvic anatomy and diseases and improving surgical techniques. If good quality, animal models and cadavers provided visual and tactile learning and assessed performance in real-time. Animal models were also anatomically realistic and useful at half the cost of cadavers. Static models and XR improved confidence, knowledge, skills, and error rates despite lack of realism and accurate tissue texture in some models and steep learning curve with XR. Only four models were commercially accessible. Most studies did not assess long-term (>6 months) retention. CONCLUSION: All educational modalities for urogynecologic surgery are largely realistic and increase participant satisfaction, preparedness, knowledge, skills, and likelihood of use. But only 40% advanced to manuscripts, and even fewer (<5%) were widely available.

Female Sex, Older Age, Earlier Surgery, Anticoagulant Use, and Meniscal Repair Are Associated With Increased Risk of Manipulation Under Anesthesia or Lysis of Adhesions for Arthrofibrosis After Anterior Cruciate Ligament Reconstruction: A Systematic Review.

PURPOSE: To determine what patient or surgical factors are associated with an increased risk of arthrofibrosis requiring manipulation under anesthesia (MUA) or lysis of adhesions (LOA) after anterior cruciate ligament reconstruction (ACLR). METHODS: A systematic review was performed in adherence to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Cochrane, Embase, and Medline databases were searched for studies published through February 2023. Inclusion criteria were studies that identified risk factors for MUA and/or LOA after ACLR. Studies investigating arthrofibrosis after multiligamentous knee injuries or ACL repair were excluded. RESULTS: Eleven studies including a total of 333,876 ACLRs with 4,842 subsequent MUA or LOA (1.45%) were analyzed. Increasing age was associated with an increased risk in 3 studies (P < .001, P < .05, P < .01) but was found to have no association another two. Other factors that were identified by multiple studies as risk factors for MUA/LOA were female sex (4 studies), earlier surgery (5 studies), use of anticoagulants other than aspirin (2 studies), and concomitant meniscal repair (4 studies). CONCLUSIONS: In total, 1.45% of the patients who underwent ACLR and were included in this systematic review had to undergo a subsequent MUA/LOA to treat arthrofibrosis. Female sex, older age, earlier surgery, use of anticoagulants other than aspirin, and concomitant meniscal repair were associated with increased risk of MUA/LOA. The modifiable risks, including use of anticoagulants and time between injury and surgery, can be considered when making treatment decisions. LEVEL OF EVIDENCE: Level IV, systematic review of Level III/IV evidence.

Cardiac manifestations of multisystem inflammatory syndrome of children after SARS-CoV-2 infection: a systematic review and meta-analysis.

This systematic review and meta-analysis were conducted to evaluate the prevalence of cardiac manifestations associated with multisystem inflammatory syndrome in children worldwide. We conducted electronic searches in Ovid MEDLINE, Ovid EMBASE, and the World Health Organization COVID-19 Literature Database from the inception of the SARS-CoV-2 pandemic to 1 January, 2022. Three authors independently screened the abstracts to determine eligibility, assessed methodology in the full texts, and extracted the data.We identified 2848 citations; 94 studies (14,932 patients) were included. The prevalence of vasopressors was 48.2% (95% CI 45.1%, 51.3%), left ventricular systolic dysfunction occurred in 37.2% (95% CI 34.1%, 40.3%), myocarditis in 34.1% (95% CI 30.5%, 37.8%), electrocardiographic dysrhythmias and abnormalities detected in 23.1% (95% CI 18.8%, 27.6%), coronary abnormalities identified in 18% (95% CI 16%, 20%), extracorporeal membrane oxygenation deployed in 2.2% (95% CI 1.7%, 2.8%), and mortality rate of 2.2% (95% CI 1.7%, 2.7%). A sensitivity analysis was performed after removing eleven studies with high bias, and the adjusted prevalence was not different than the original evaluation.In this meta-analysis of the largest cohort of multisystem inflammatory syndrome in children patients to date, we established the most accurate prevalence of the most common cardiac manifestations. Providers will subsequently have more precise data to anticipate patient outcomes and approach discussions concerning the frequency of monitoring outside the acute hospital period.

The Role of Cryotherapy After Total Knee Arthroplasty: A Systematic Review.

BACKGROUND: Previous research shows conflicting evidence regarding the postoperative role of cryotherapy after total knee arthroplasty (TKA). This systematic review aims to further investigate the effect of various methods of cryotherapy on the following: (1) pain; (2) swelling; (3) postoperative opioid use; and (4) range of motion (ROM). METHODS: A strategic keyword search of Medline, Cochrane, Embase, and CINAHL retrieved randomized controlled trials examining cryotherapy following TKA published between February 1, 2017, and February 24, 2022. The studied outcomes included pain ratings, knee/limb swelling, opioid use, and ROM. Six studies were selected for inclusion in this review. RESULTS: Opioid use was significantly decreased in cryotherapy groups compared to noncryotherapy groups within the first postoperative week only (P < .05). This effect may be augmented by the use of computer-assisted (temperature regulated) cryotherapy devices, compared to other modalities including ice packs. Pain ratings also decrease, but this decrease may not be clinically relevant. Cryotherapy appears to confer no consistent benefit to ROM and swelling at any time point. Computer-assisted cryotherapy may be associated with decreased opioid consumption after TKA compared to traditional ice packs. CONCLUSION: Cryotherapy's role after TKA appears to be in decreasing opioid consumption primarily in the first postoperative week. Pain ratings also decrease consistently with cryotherapy use, but this decrease may not be clinically relevant. Study heterogeneity requires further research focusing on optimizing cryotherapy modalities within the first postoperative week, and analyzing cost associated with modern outpatient postoperative TKA protocols.

Domains of professional practice: analysis of publications in the Journal of the Medical Library Association from 2010 to 2019.

The Medical Library Association (MLA) has defined 7 domain hubs aligning to different areas of information professional practice. To assess the extent to which content in the Journal of the Medical Library Association (JMLA) is reflective of these domains, we analyzed the magnitude of JMLA articles aligning to each domain hub over the last 10 years. Bibliographic records for 453 articles published in JMLA from 2010 to 2019 were downloaded from Web of Science and screened using Covidence software. Thirteen articles were excluded during the title and abstract review because they failed to meet the inclusion criteria, resulting in 440 articles included in this review. The title and abstract of each article were screened by two reviewers, each of whom assigned the article up to two tags corresponding to MLA domain hubs (i.e., information services, information management, education, professionalism and leadership, innovation and research practice, clinical support, and health equity & global health). These results inform the MLA community about our strengths in health information professional practice as reflected by articles published in JMLA.

Barriers and motivators to specializing in geriatrics and strategies for recruitment: Scoping review.

While the barriers to specializing in geriatrics are known, motivators behind why medical trainees choose geriatrics are not as well understood. It is also unknown if recruitment strategies in the literature address these barriers and motivators. The aim of this systematic scoping review is to examine the current literature on recruitment strategies alongside motivators and barriers for specializing in geriatrics. Eligible articles for this scoping review either focused on motivators or barriers among trainees (medical students, resident-physicians, fellows) or recruitment strategies. A scoping search was conducted in MEDLINE, Embase, CINAHL, and PsychINFO. Data was extracted on article characteristics and themes. 88 of 2064 articles were eligible and included. Personal fulfillment emerged as the most common theme for motivators, contrary to prior studies that cite positive role modeling. Financial disincentive remained the most common barrier, followed by limited exposure and "futile" practice. Promising interventions beyond financial compensation include defining geriatrics better, emphasizing the high job satisfaction rates, increasing clinical exposure for medical students, and additional funding for academic centers to recruit academic geriatricians. Policymakers and medical educators should consider multiple strategies that target the motivators, as well as the barriers to pursuing geriatrics.

Anticoagulation strategies and recurrence of venous thromboembolic events in patients with sickle cell disease: a systematic review and meta-analysis.

Sickle cell disease (SCD) results in many complications including an increased risk of developing venous thromboembolic events (VTEs) and an increased risk of mortality as a result. We conducted a systematic review using multiple databases to compare the efficacy of different anticoagulation in preventing recurrence, development of bleeding, progression of thrombus, and mortality in patients with SCD and a venous thrombotic event. Eight hundred seventy-one studies were screened and six studies were included. Among patients with SCD who experienced a VTE and were anticoagulated, the overall recurrence of VTE was 27.6% (95%CI 23.5-31.9). The overall progression to pulmonary embolism (PE) was 11.7% (95%CI 4.3-22.1). The overall bleeding rate was 14.1% (95%CI 7.8-21.9) and the overall mortality was 3.7% (95%CI 0.8-8.5). Based on observational studies, there did not appear to be differences between anticoagulant classes for the above adverse outcomes. Significant heterogeneity in the patient population and outcome measures limited the interpretation of the results. More studies, specifically randomized trials, are needed to help direct appropriate management of VTE's in patients with sickle cell disease (PROSPERO ID: 236,208).

Social network analysis of publication collaboration of accelerating change in MedEd consortium.

INTRODUCTION: The American Medical Association formed the Accelerating Change in Medical Education Consortium through grants to effect change in medical education. The dissemination of educational innovations through scholarship was a priority. The objective of this study was to explore the patterns of collaboration of educational innovation through the consortium's publications. METHOD: Publications were identified from grantee schools' semi-annual reports. Each publication was coded for the number of citations, Altmetric score, domain of scholarship, and collaboration with other institutions. Social network analysis explored relationships at the midpoint and end of the grant. RESULTS: Over five years, the 32 Consortium institutions produced 168 publications, ranging from 38 papers from one institution to no manuscripts from another. The two most common domains focused on health system science (92 papers) and competency-based medical education (30 papers). Articles were published in 54 different journals. Forty percent of publications involved more than one institution. Social network analysis demonstrated rich publishing relationships within the Consortium members as well as beyond the Consortium schools. In addition, there was growth of the network connections and density over time. CONCLUSION: The Consortium fostered a scholarship network disseminating a broad range of educational innovations through publications of individual school projects and collaborations.

Creating a more inclusive journal: the Journal of the Medical Library Association's evolving process for selecting editorial board members.

The Journal of the Medical Library Association (JMLA) selects new editorial board members every year. In the spring of 2021, JMLA used a new process for reviewing and selecting applicants for the limited number of open editorial board positions. This reevaluation of the selection process was spurred by a desire to create a more diverse and representative board. Changes to the procedures for selecting new editorial board members included having an open call for editorial board members, creating an application form, creating a selection committee to screen applicants, creating a form for the selection committee to extract data from applications, and creating a two-step process for screening and then selecting board members. As part of construction of this new process, areas for continued improvement were also identified, such as refining the application form to allow more specific answers to areas of interest to the selection committee. The newly created selection process for editorial board members constitutes a significant change in JMLA processes; however, more can be done to build on this work by further refining the selection process and ensuring that new members are selected in a transparent and streamlined manner.

Designing a Workflow for Online Learning Objects Created by Health Sciences Librarians.

The COVID-19 lockdown led to immediate changes in how Virginia Commonwealth University's (VCU) Health Sciences Library (HSL) would support faculty and students through the means of online learning objects (OLOs). Each Research and Education (RED) librarian is responsible for responding to the educational needs of a specific health sciences school or college as well as those of the VCU Health System. A rapid increase in the OLO creation required a mechanism to curate these objects, make them available to all liaisons, and standardize workflows. The act of curating and creating standardized workflows would allow for easier management and updating of content, the ability to share and cross-pollinate content between liaisons, and the prevention of duplicated content by liaisons, thus lessening the workload. Support from key stakeholders, including RED administrators, the Online Learning Librarian (OLL), and the Multimedia Teaching and Learning Librarian (MTLL), enabled a team of RED librarians (who formed an Online Learning Team (OLT)) to standardize workflows and upload them to the department's intranet for future reference.

Anti-Xa versus time-guided anticoagulation strategies in extracorporeal membrane oxygenation: a systematic review and meta-analysis.

The purpose was to compare time-based vs anti-Xa-based anticoagulation strategies in patients on ECMO. We conducted a systematic review and meta-analysis using multiple electronic databases and included studies from inception to July 19, 2019. The proportion of bleeding, thrombosis, and mortality were evaluated.Twenty-six studies (2,086 patients) were included. Bleeding occurred in 34.2% (95%CI 25.1;43.9) of the patients with anti-Xa-based versus 41.6% (95%CI 24.9;59.4) of the patients with time-based anticoagulation strategies. Thrombosis occurred in 32.6% (95%CI 19.1;47.7) of the patients with anti-Xa-based versus 38.4% (95%CI 22.2;56.1) of the patients with time-based anticoagulation strategies. And mortality rate was 35.4% (95%CI 28.9;42.1) of the patients with anti-Xa-based versus 42.9% (95%CI 36.9;48.9) of the patients with time-based anticoagulation strategies. Among the seven studies providing results from both anticoagulation strategies, significantly fewer bleeding events occurred in the anti-Xa-based anticoagulation strategy (adjusted OR 0.49 (95%CI 0.32;0.74), p < 0.001) and a significantly lower mortality rate (adjusted OR 0.61 (95%CI 0.40;0.95), p = 0.03). There was no significant difference in thrombotic events (adjusted OR 0.91 (95%CI 0.56;1.49), p = 0.71). In these seven observational studies, only a small fraction of the patients were adults, and data were insufficient to analyze the effect of the type of ECMO.In this meta-analysis of observational studies of patients on ECMO, an anti-Xa-based anticoagulation strategy, when compared to a time-based strategy, was associated with fewer bleeding events and mortality rate, without an increase in thrombotic events.

Racial, gender, sexual, and disability identities of the Journal of the Medical Library Association's editorial board, reviewers, and authors.

The Journal of the Medical Library Association (JMLA) recently issued a call for submissions that recognize and address social injustices; speak to diversity, equity, and inclusion in our workforce and among our user populations; and share critical perspectives on health sciences librarianship as well as those on any topic within JMLA's scope written by authors who are Black, Indigenous, or People of Color. We also committed to creating more equitable opportunities for authors, reviewers, and editorial board members from marginalized groups. As part of this effort, we conducted a demographic survey of all individuals who served as a member of the JMLA editorial board or reviewer or had submitted a manuscript to JMLA between 2018 and 2020. We found that most survey respondents are white, heterosexual, women and do not identify with a disability, meaning that JMLA is missing out on a diversity of perspectives and life experiences that could improve the journal's processes and policies, enrich its content, and accelerate the research and practice of health sciences librarianship. Therefore, to avoid perpetuating or aggravating systemic biases and power structures in scholarly publishing or health sciences librarianship, we pledge to take concrete steps toward making JMLA a more diverse and inclusive journal.

Striving for equity: An update from the Journal of the Medical Library Association.

In 2020, the Journal of the Medical Library Association (JMLA) launched an initiative aimed at providing more equitable opportunities for authors, reviewers, and editorial team members. This editorial provides an update on the steps we have taken thus far to empower authors, increase the diversity of our editorial team, and make equity-minded recommendations to the Medical Library Association.

Pleural Effusions After Congenital Cardiac Surgery Requiring Readmission: A Systematic Review and Meta-analysis.

Patients with congenital heart disease (CHD) are surviving longer thanks to improved surgical techniques and increasing knowledge of natural history. Pleural effusions continue to be a complication that affect many surgical patients and are associated with increased morbidity, many times requiring readmission and additional invasive procedures. The risks for development of pleural effusion after hospital discharge are ill-defined, which leads to uncertainty related to strategies for prevention. Our primary objective was to determine, in patients with CHD requiring cardiopulmonary bypass, the prevalence of post-surgical pleural effusions leading to readmission. The secondary objective was to identify risk factors associated with post-surgical pleural effusions requiring readmission. We identified 4417 citations; 10 full-text articles were included in the final review. Of the included studies, eight focused on single-ventricle palliation, one looked at Tetralogy of Fallot patients, and another on pleural effusion in the setting of post-pericardiotomy syndrome. Using a random-effect model, the overall prevalence of pleural effusion requiring readmission was 10.2% (95% CI 4.6; 17.6). Heterogeneity was high (I2 = 91%). In a subpopulation of patients after single-ventricle palliation, the prevalence was 13.0% (95% CI 6.0;21.0), whereas it was 3.0% (95% CI 0.4;6.75) in patients mostly with biventricular physiology. We were unable to accurately assess risk factors. A better understanding of this complication with a focus on single-ventricle physiology will allow for improved risk stratification, family counseling, and earlier recognition of pleural effusion in this patient population.

Healthcare professionals' views on discussing fertility preservation with young cancer patients: a mixed method systematic review of the literature.

OBJECTIVE: In spite of efforts to guarantee patients are adequately informed about their risk of fertility loss and offered treatment for fertility preservation (FP), previous studies have reported that this topic is not routinely discussed with patients, especially with younger patient populations. A mixed method systematic review was undertaken to explore the factors shaping the discussion of FP with children (0-15 years) and adolescents/young adults (16-24 years) with cancer. METHODS: Six databases were searched independently using a combination of keywords and controlled vocabulary/subject headings relating to cancer and fertility. Inclusion criteria consisted of: (a) being published in a peer-reviewed journal, (b) a focus on healthcare professionals' (HCPs') beliefs, attitudes, or practices regarding fertility issues in cancer patients, (c) primary data collection from HCPs, and (d) a focus on HCPs who provide services to young patients. Of the 6276 articles identified in the search, 16 articles presenting the results of 14 studies were included in the final review. RESULTS: Common themes reported across studies indicate that five main factors influence HCPs' discussion of FP with young cancer patients: (a) HCPs' knowledge, (b) HCPs' sense of comfort, (c) patient factors (i.e., sexual maturity, prognosis, partnership status, and whether or not they initiate the conversation), (d) parent factors (i.e., HCPs' perception of the extent of their involvement), and (e) availability of educational materials. CONCLUSIONS: Future work should ensure that HCPs possess knowledge of cancer-related FP and that they receive adequate training on how to consent and discuss information with young patients and their parents.

Seeing the Big Picture: Sustaining Success in Liaison Services.

While the liaison program at the Tompkins-McCaw Library for the Health Sciences has existed for more than 15 years, it has yet to be fully evaluated. This article seeks to evaluate the scope and impact of the program at a broad level using quantitative and qualitative data. Descriptive statistics to summarize liaison activity were collected for the fiscal years 2012-2016. In addition, liaisons and users were surveyed to gain insight into the effectiveness and the perception of the program. Program statistics show that users' engagement with liaisons is high and growing. Qualitative data reveals that while better methods are needed to assess the extent of the program's impact, users appreciate the value that liaisons bring by supporting the educational and research missions of various programs.

Clinical outcomes of HIV care delivery models in the US: a systematic review.

With over 1 million people living with HIV, the US faces national challenges in HIV care delivery due to an inadequate HIV specialist workforce and the increasing role of non-communicable chronic diseases in driving morbidity and mortality in HIV-infected patients. Alternative HIV care delivery models, which include substantial roles for advanced practitioners and/or coordination between specialty and primary care settings in managing HIV-infected patients, may address these needs. We aimed to systematically review the evidence on patient-level HIV-specific and primary care health outcomes for HIV-infected adults receiving outpatient care across HIV care delivery models. We identified randomized trials and observational studies from bibliographic and other databases through March 2016. Eligible studies met pre-specified eligibility criteria including on care delivery models and patient-level health outcomes. We considered all available evidence, including non-experimental studies, and evaluated studies for risk of bias. We identified 3605 studies, of which 13 met eligibility criteria. Of the 13 eligible studies, the majority evaluated specialty-based care (9 studies). Across all studies and care delivery models, eligible studies primarily reported mortality and antiretroviral use, with specialty-based care associated with mortality reductions at the clinician and practice levels and with increased antiretroviral initiation or use at the clinician level but not the practice level. Limited and heterogeneous outcomes were reported for other patient-level HIV-specific outcomes (e.g., viral suppression) as well as for primary care health outcomes across all care delivery models. No studies addressed chronic care outcomes related to aging. Limited evidence was available across geographic settings and key populations. As re-design of care delivery in the US continues to evolve, better understanding of patient-level HIV-related and primary care health outcomes, especially across different staffing models and among different patient populations and geographic locations, is urgently needed to improve HIV disease management.

Methods for Evaluating Respondent Attrition in Web-Based Surveys.

BACKGROUND: Electronic surveys are convenient, cost effective, and increasingly popular tools for collecting information. While the online platform allows researchers to recruit and enroll more participants, there is an increased risk of participant dropout in Web-based research. Often, these dropout trends are simply reported, adjusted for, or ignored altogether. OBJECTIVE: To propose a conceptual framework that analyzes respondent attrition and demonstrates the utility of these methods with existing survey data. METHODS: First, we suggest visualization of attrition trends using bar charts and survival curves. Next, we propose a generalized linear mixed model (GLMM) to detect or confirm significant attrition points. Finally, we suggest applications of existing statistical methods to investigate the effect of internal survey characteristics and patient characteristics on dropout. In order to apply this framework, we conducted a case study; a seventeen-item Informed Decision-Making (IDM) module addressing how and why patients make decisions about cancer screening. RESULTS: Using the framework, we were able to find significant attrition points at Questions 4, 6, 7, and 9, and were also able to identify participant responses and characteristics associated with dropout at these points and overall. CONCLUSIONS: When these methods were applied to survey data, significant attrition trends were revealed, both visually and empirically, that can inspire researchers to investigate the factors associated with survey dropout, address whether survey completion is associated with health outcomes, and compare attrition patterns between groups. The framework can be used to extract information beyond simple responses, can be useful during survey development, and can help determine the external validity of survey results.

Correlation between progression-free survival and overall survival in metastatic breast cancer patients receiving anthracyclines, taxanes, or targeted therapies: a trial-level meta-analysis.

Over the past decade, several new drugs have received regulatory approval for metastatic breast cancer (MBC). However, some of these approvals were based on improvement in progression-free survival (PFS), without a concomitant increase in overall survival (OS). This has led some to question the utility of using PFS as a measure for drug approval. To address the uncertainty of using PFS as a surrogate for OS in MBC, a systematic literature review followed by a trial-level correlative analysis was conducted in patients receiving anthracyclines, taxanes, or targeted therapies. Electronic databases were searched to identify randomized trials published between January 1990 and August 2015. Data extraction included hazard ratios for PFS (HRPFS) and OS (HROS) between comparative arms as well as trial-level parameters. Weighted multivariate regression analysis was then used to test the strength of the association between HRPFS and HROS. 72 trials providing 84 comparative arms met the inclusion criteria. HRPFS was a significant predictor of HROS (model coefficient = 0.18, p = 0.04). However, only 31% (i.e., model R (2)) of the variability between the PFS-OS association was accounted for. When trials were limited to ≥2nd-line setting, the strength of the association improved (model coefficient = 0.40, p < 0.001) and the model R (2) increased to 55%. However, the HRPFS-HROS association was no longer significant when only 1st-line trials were considered (p = 0.90). HRPFS is a predictor for HROS in MBC randomized trials. However, the effect was driven by trials in the ≥2nd-line setting. Therefore, PFS can be a suitable surrogate for OS in trials evaluating new treatments in the 2nd setting and beyond. The use of PFS alone as a primary trial endpoint in the 1st-line setting is not recommended.