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Delays and denials of health coverage are troubling in a country that underperforms across many health outcomes, but how do coverage denials impose a broader set of administrative burdens? Though KFF analyses highlight the number of denied ACA marketplace claims that are appealed, this chapter offers the first survey evidence of appeals and reversals at the patient level. Such an analysis helps to unpack not only the number of appeals, but also who appeals, and to what extent the admininistrative burdens of appealing are inequitable. Drawing on survey evidence, interviews with patients, and administrative data, this chapter shows how few patients understand they can appeal, and often they underestimate the odds of prevailing against health insurance giants. What’s more, not only are less affluent patients less likely to challenge denials, but also Black and Hispanic Medicaid patients and sicker patients are less likely to appeal successfully. That appealing – and doing so successfully – is so inequitably distributed offers new insights into the scope of this health policy problem and how it can deepen racial and socioeconomic divides in access to health benefits.
Every day, millions of Americans face barriers accessing prescription drugs because of delays and denials driven by prior authorization. Though this practice seeks to guard against runaway health care costs and unnecessary treatments, it can keep out of reach quite necessary drugs for common conditions such as diabetes and depression. Prescription drugs are a particularly important setting in which to examine this insurance practice not only because approximately two-thirds of American adults take prescription drugs, but also because this setting is astonishingly complex, placing heavy informational burdens on patients as well as on their physicians. This complexity is driven in part by each health insurer managing its own formulary, such that there is uncertainty about coverage whenever one changes insurers, with physicians often feeling as though they are prescribing in a black box. Drawing on interviews with patients and physicians, this chapter shows that discretion-laden medical necessity guidelines, coupled with formulary variation across insurers, can lead to treatment interruptions that exact a health and economic price for patients, especially those with fewer resources.
An intricate landscape of bias permeates biomedical research. In this groundbreaking exploration the myriad sources of bias shaping research outcomes, from cognitive biases inherent in researchers to the selection of study subjects and data interpretation, are examined in detail. With a focus on randomized controlled trials, pharmacologic studies, genetic research, animal studies, and pandemic analyses, it illuminates how bias distorts the quest for scientific truth. Historical and contemporary examples vividly illustrate the impact of biases across research domains. Offering insights on recognizing and mitigating bias, this comprehensive work equips scientists and research teams with tools to navigate the complex terrain of biased research practices. A must-read for anyone seeking a deeper understanding of the critical role biases play in shaping the reliability and reproducibility of biomedical research.
We investigate why conservative online news media are often seen as niche, whereas liberal outlets have ideologically broader audiences. We examine two explanatory mechanisms for this asymmetry. The behavioral explanation focuses on differences in homophily, where one ideological camp would be exposed to more cross-cutting content due to more diverse networking preferences. The structural explanation highlights how a platform’s user base places some in the minority, naturally exposing them to more cross-cutting content. We analyze network exposure and sharing of news media content among 420,000 US Twitter users in 2022, prior to Musk’s acquisition of the platform. We find that conservative users, as the minority, were overexposed to cross-cutting media content through their network contacts, while liberal users, as the majority, were underexposed. Consequently, liberal media were shared across party lines, while conservative media were overlooked by liberals and circulated mostly within a tight network of conservative accounts. This apparent paradox suggests that although conservatives primarily engage with their own media, liberal outlets attract a broader audience, including many conservatives. By combining observational data with simulated benchmarks, we find that the structural mechanism plays a primary role in the observed asymmetry, as exposure to liberal content extends farther into conservative online communities.
Meta-analysis of economic evaluations (MAEEs), using the incremental net benefit approach, enables quantitative synthesis of cost-effectiveness evidence and may support policy decisions. However, little is known about users’ perceptions or utility of MAEEs. This study examined end users’ perceptions and applicability of MAEE findings in real-world decision-making.
Methods
A cross-sectional online survey was conducted among individuals attending an ISPOR Real-World Evidence Summit 2025 breakout session on MAEEs. The survey collected data on respondent characteristics, prior awareness of and experience with MAEEs, perceived usefulness, potential applications, and the likelihood of future use. Responses were summarized using descriptive statistics, and associations between participant characteristics and perceptions were analyzed using chi-square tests and odds ratios (95 percent confidence interval).
Results
Seventy-six participants completed the survey. Most respondents were from the WHO South-East Asia Region (72 percent) and represented Industry/Pharma/MedTech (36 percent) or Academia/Research (34 percent). Perceptions were positive: 78 percent considered MAEEs “definitely” or “possibly” beneficial, and 55 percent indicated they would likely or very likely use MAEEs in policymaking. MAEEs were perceived as useful for highlighting variation across studies, reducing single-study bias, and improving precision when multiple EEs exist on the same topic within a country. Potential users included national health authorities, policy makers, hospitals/insurers, and countries with limited EE capacity. No significant associations were observed between respondent characteristics and perceived benefits or likelihood of use (p > 0.05).
Conclusions
MAEEs are well-received by participants. Larger surveys and qualitative studies are needed to explore context-specific applicability, refine methodology, and enhance their utility across diverse settings.
Postinfectious autoimmune processes are hypothesized to be causally implicated in tic disorders, including Tourette syndrome and chronic tic disorder. However, this hypothesis remains controversial. In this nationwide cohort study, we aimed to clarify the mechanisms underlying the association between proneness to infections and tic disorders.
Methods
Using Swedish national registers, we identified 3,886,533 individuals (probands) born between 1970 and 2008 with available data on both biological parents. Probands were linked to six clusters of relatives: parents, full siblings, maternal half-siblings, paternal half-siblings, aunts/uncles, and cousins. Cox proportional hazards regression models were used to estimate the risk of tic disorders in probands exposed to infections and their relatives, compared with unexposed probands and their relatives. We also examined dose–response associations using logistic regression models.
Results
Probands exposed to infections had an increased risk of tic disorders (hazard ratio [HR], 1.46; 95% confidence interval [CI], 1.40–1.52), as did their relatives. The observed risks increased with the degree of genetic relatedness, from HR (95% CI) of 1.15 (1.12–1.19) in cousins to 1.31 (1.25–1.37) in first-degree relatives. There was a dose–response association between the number of infections in the probands and the odds for tic disorders in the probands and their relatives. Results remained consistent after adjustment for infections in relatives, tic disorders in probands, and autoimmune diseases in probands and relatives.
Conclusions
Our results suggest an important role of shared genetic factors in the association between infections and tic disorders, potentially pointing to pleiotropic mechanisms.
The effect of Early Technology Review (ETR) through early engagement with multiple stakeholders on strategic development for technologies at prototype development and proof of concept was examined through two generic case studies of relevant outcomes. In both examples, advice to companies could have significantly changed strategic direction to become more relevant to payers and clinical experts. In one instance, the advice was followed and resulted in an expedited first-in-human study and was considered for a second ETR to inform the proof-of-concept study. In the second example, it was reported that changes in strategic direction were being considered.
These reports provide descriptive accounts of very early applications of the ETR process that now spans the entire preclinical trajectory. Had the second case study at proof of concept been able to benefit from this approach at the point of prototype development, it could have avoided the costs and research through earlier advice. This begs the question whether a sequential iterative approach to evidentiary multiple stakeholder advice across the technology life cycle may reduce risk and cost while benefitting from efficiencies of applying adaptive design.
To compare 12-month functional, aesthetic and scar outcomes after septorhinoplasty in patients with and without allergic rhinitis and to assess allergy symptoms in the allergic rhinitis group.
Methods
Ninety-six patients were included (allergic rhinitis, n = 47; non-allergic rhinitis, n = 49). No turbinate surgery was performed. Allergy symptoms (allergic rhinitis group) were rated pre-operatively and at 12 months using a visual analogue scale (VAS). At 12 months, all patients completed the Standardised Cosmesis and Health Nasal Outcomes Survey; scars were evaluated with the Stony Brook Scar Evaluation Scale and patient- and physician-reported VAS scores for scar and nasal shape.
Results
The Standardised Cosmesis and Health Nasal Outcomes Survey, the Stony Brook Scar Evaluation Scale and scar VAS scores were similar between groups. Nasal shape VAS scores were higher in the non-allergic rhinitis group, significant only for physician ratings (p = 0.03). In the allergic rhinitis group, allergy VAS decreased from 39.32 ± 42.25 to 24.22 ± 31.96 (p < 0.001).
Conclusion
Allergic rhinitis does not adversely affect functional, aesthetic or scar outcomes after septorhinoplasty, and septorhinoplasty may clinically reduce allergy symptoms in patients with allergic rhinitis.
Early-stage clinical and translational researchers require not only technical expertise but also leadership and communication skills for long-term success. Many training programs lack structured approaches to building these essential “soft skills.”
Objective:
To evaluate the impact and perceived value of a structured coaching and leadership program for trainees in KL2 and T32 programs.
Methods:
This qualitative evaluation assessed a Coaching and Leadership Program (CLP) that include individualized coaching and group workshops incorporating leadership development and the DISC behavioral communication model (Dominance, Influence, Steadiness, and Conscientiousness). Semi-structured interviews were conducted with twelve KL2 and postdoctoral T32 trainees between July and August 2025. Transcripts were analyzed using descriptive content analysis and inductive coding by two analysts in MAXQDA.
Results:
Five key themes emerged: 1) Both T and K trainees consistently described the CLP as a broadly positive and beneficial experience; 2) Coaching helped trainees build concrete organizational strategies, particularly around time management and logistical processes; 3) The CLP helped build trainees’ confidence and professional identity, especially around communication with mentors, bosses, or their team; 4) The CLP was perceived as complementary and well integrated within KL2 and T32 training, particularly by addressing “soft skills” missing elsewhere; and 5) Participants recommended stronger orientation, more opportunities for practical skill-building during sessions, and offering greater variety and choice in coaches.
Conclusions:
The CLP complements scientific training for early-career translational researchers. Trainees gained practical tools for team management, conflict resolution, and strategic planning, while benefiting from a confidential space for professional growth. Findings suggest coaching is a valuable enhancement to training programs for developing translational research leaders.
We aimed to improve the shared decision-making process for those offered antipsychotic medicines by co-designing a suite of accurate and accessible medicines information video resources.
Methods:
We adopted the four core activities of the Double Diamond Design Thinking Model – Discover, Define, Develop, and Deliver. We first explored the full range of stakeholder needs including pharmacists, psychiatrists, nurses, and most importantly experts-by-experience, in relation to existing antipsychotic medicines information resources. Using a validated tool, we assessed the understandability and actionability of the manufacturer’s patient information leaflets and digital resources accessed following an internet search. Using this information, we refined our insights into a clear problem statement and solution.
Results:
We identified gaps in readability, understandability, and actionability with existing antipsychotic medicines information resources. Consequently, we developed prototype information resources that we iteratively reviewed and validated along with our expert panel of key stakeholders. We uploaded our six antipsychotic medicines information videos to our digital platform where they can be freely accessed by those participating in shared decision-making.
Conclusions:
Our antipsychotic medicines information videos address an unmet need in the shared decision-making process. Using a human-centred and innovative approach, we prioritised input from key stakeholders to provide clear, accurate, and accessible information to support informed choices in psychosis recovery.
It is clear that malaria, a disease caused by Plasmodium spp., has burdened humans throughout our evolutionary paths and remains one of the deadliest maladies to date. Yet, in sharp contrast to the consequence, the human–malaria interaction is a topic that archaeologists do not understand well. This is partially due to the technical difficulties in extracting evidence from archaeological contexts, and partially due to a dearth of interdisciplinary review on this parasite – valuable information is thus veiled by technical as well as linguistic barriers. This review synthesizes archaeological, biological and ecological evidence to explore such interaction on the east side of the Eurasian continent – namely, East, Southeast and South Asia. Materials under scrutiny involve published genetic analysis on pertinent malaria species, ancient Chinese historical/medical documents and osteoarchaeological data on relevant skeletal markers. We examine how the evolution of both Plasmodium and humans engaged in this theatre, and highlight the role played by malaria in driving human demographic shifts as well as the biological and even societal resilience of people to its exposure. Interestingly, humans, in creating favourable environments for us – for instance, watering fields for rice cultivation – had inadvertently yet systematically made it suitable for malaria transmission as well.
Depression remains underrecognized among internally displaced persons (IDPs) in Nigeria, where access to mental health and psychosocial support is limited. This study assessed the reliability, validity, and cutoff performance of the Hausa WHO-5 Well-Being Index for identifying probable moderate-to-severe depressive symptoms among IDPs in Abuja, Nigeria. A total of 264 IDPs completed the Hausa WHO-5 and PHQ-9. Internal consistency was evaluated using ordinal Cronbach’s alpha and McDonald’s omega, factorial validity using one-factor confirmatory factor analysis with the weighted least squares mean and variance adjusted estimator, and construct validity with Spearman’s correlation between Hausa WHO-5 and PHQ-9 scores. Receiver operating characteristic analysis assessed sensitivity and specificity for cutoffs of ≤28 and <50, using PHQ-9 scores ≥10 as the reference standard. The Hausa WHO-5 demonstrated excellent internal consistency and a unidimensional structure with strong loadings and excellent model fit. Scores were inversely associated with PHQ-9 scores across age and sex subgroups. Discrimination was moderate at both thresholds, and the <50 cutoff provided the best balance of sensitivity and specificity for screening, triage, and referral.
Schizophrenia has been proposed to be a disorder of accelerated ageing, characterised by a mismatch between biological and chronological age. Evidence accumulated over the past 15 years has examined this model using molecular, neuroimaging, cognitive and epidemiological markers.
Aims
To evaluate whether schizophrenia shows evidence of an accelerated or advanced ageing phenotype across biological systems and to assess the consistency of the underlying molecular mechanisms.
Method
A systematic review (PROSPERO CRD42024574059) was conducted following PRISMA guidelines. PubMed and Google Scholar were searched for studies published after 2009 that cited the original accelerated ageing hypothesis publication or investigated ageing in the context of schizophrenia and/or psychosis. Evidence was synthesised narratively by domain, with emphases on meta-analyses and minimally treated, longitudinal cohorts.
Results
A total of 923 manuscripts were identified, and a final 170 were included in the systematic review. Schizophrenia showed a reproducible ageing phenotype, as evidenced by in increased mortality, higher dementia risk, brain-predicted age elevation and cognitive decline. BrainAGE studies revealed mean age gaps of 3–4 years, often present at first episode. At the mechanistic level, meta-analyses reported consistent telomere shortening (standardised mean difference approximately –0.4 to –0.5) and modest acceleration of selected epigenetic clocks. Dysregulation of oxidative stress, inflammation, mitochondrial function and insulin-like growth factor-1 signalling were frequent and partly preceded antipsychotic exposure.
Conclusions
Schizophrenia is associated with a multisystem ageing phenotype underpinned by convergent biological mechanisms, most consistently involving telomere attrition and oxidative and/or inflammatory stress. The overall pattern supports a model of advanced rather than uniformly accelerated ageing, reflecting early biological deviation with parallel rather than steeper decline.
Common mental disorders are a major public health concern, particularly in low-resource settings where specialist services are limited. While task-shifting to non-specialist providers (NSPs) has improved access, maintaining their competency during scale-up remains a challenge. This study evaluated a technology-assisted platform (TAP) for training and supervision of NSPs delivering the WHO Thinking Healthy Programme (THP) for perinatal depression. The android-based hybrid platform integrates avatar-led instruction, digital modules, video demonstrations and structured supervision. Qualitative data were collected from three focus group discussions with peers (n = 24), one with trainers (n = 4) and four interviews with peers who left the programme. Data were analysed using the framework analysis approach. Peer competencies were assessed, in a simulated role play setting, using WHO’s Ensuring Quality in Psychological Support (EQUIP) tools immediately post-training and at 6 and 12 months. The hybrid model, combining automated digital training with human facilitation, was well received. In-person trainers valued avatar-based instruction, video modelling and automated guidance. Participants reported high satisfaction with the digital learning experience, enhanced technological skills, knowledge retention and confidence. Structured supervision supported competency by standardising supervision agendas, case management and fostering ongoing learning. Competency scores demonstrated sustained improvement over 12 months. Technology-assisted platforms such as TAP represent a scalable and sustainable strategy for strengthening NSP training and supervision, helping to maintain and potentially enhance the competency of psychological intervention delivery in low-resource settings.
Optimal nutrition is essential for reducing both all-cause and CVD mortality. Existing research highlights the importance of macronutrient type and quality in this context, with limited evidence in non-Western populations. We aimed to determine the association between macronutrient distribution and all-cause and CVD mortality in an African population as well as the contribution of the respective food sources. This cohort consisted of 1737 African men and women with a median observational time of 13 years, resulting in 19 456·6 person-years. CVD-related international classification for diseases, 10th revision (ICD-10) codes (I00–I99) were included when considering CVD mortality. Substitution analysis using partition and nutrient-density models assessed the relationship between macronutrient distribution and mortality. Higher intakes of complex carbohydrates (CHO), animal protein, total fat and MUFA were associated with decreased all-cause mortality risk. The partition model also revealed that substituting 200 calories (kcal) of plant protein with animal protein significantly reduced all-cause mortality risk by 39 % to 33 % (model 1–3). In addition, the isoenergetic substitution of 10 % total energy from total fat with total CHO led to a 17 % reduction in all-cause mortality risk (hazard ratio (HR) 0·83; 95 % CI 0·72, 0·96). No significant associations with CVD mortality were found. These findings partially agree with, yet also oppose, previous studies, emphasising the need for population-specific data. Research from high-income European populations may not directly apply to African contexts due to food insecurity, reliance on staple-based diets with low-quality plant proteins and lean, higher-quality animal protein sources, as well as differences in CVD disease aetiology.