Trends in Metabolic Phenotypes According to Body Mass Index Among US Adults, 1999-2018

ObjectiveTo examine the prevalence, distribution, and temporal trends of metabolic phenotypes that are jointly determined by obesity and metabolic health status among US adults, overall and in key population subgroups.Participants and MethodsA nationally representative sample of civilian, noninstitutionalized US adults aged 20 years and older from the National Health and Nutrition Examination Survey between 1999-2000 and 2017-2018 were included. Metabolic phenotypes were characterized jointly by body mass index and metabolic health: metabolically healthy underweight, normal weight, overweight, and obese (MH-OB); and metabolically unhealthy underweight, normal weight, overweight, and obese (MU-OB). Metabolic health was defined using the 2009 joint scientific statement for metabolic syndrome from the International Diabetes Federation Task Force on Epidemiology and Prevention, National Heart, Lung, and Blood Institute, American Heart Association, World Heart Federation, International Atherosclerosis Society, and International Association for the Study of Obesity as having 2 or less components (primary analysis) or no components (secondary analysis) of the following: waist circumference of 102 cm or greater in men and 88 cm or greater in women, fasting plasma glucose level of 100 mg/dL or greater, blood pressure of 130/85 mm Hg or greater, triglyceride level of 150 mg/dL or greater, and high-density lipoprotein cholesterol level of less than 40 mg/dL in men and less than 50 mg/dL in women.ResultsOf 19,941 adults, the mean age was 46.9 years; 10,005 (50.6%) were female. From 1999 to 2018, the prevalence in primary analysis declined from 33.2% (465465 of 1646) to 25.1% (454454 of 2058) (difference, ?8.09%; 95% CI, ?12.5% to ?3.70%) for metabolically healthy normal weight, whereas it increased from 9.92% (178178 of 1646) to 14.1% (277277 of 2058) (difference, 4.17%; 95% CI, 1.13% to 7.21%) for MH-OB (both P<.001 for trend). The prevalence of metabolically healthy underweight and overweight remained stable at about 1.62% (298298 of 19,94119,941) (95% CI, 1.38% to 1.89%; P=.34 for trend) and 22.2% (4,275 of 19,941) (95% CI, 21.4% to 23.0%; P=.14 for trend), respectively. The prevalence declined from 3.77% (72 of 1646) to 2.10% (68 of 2058) (difference, ?1.67%; 95% CI, ?3.22% to ?0.12%; P=.006 for trend) for metabolically unhealthy normal weight, whereas it increased from 19.0% (343 of 1646) to 26.4% (574 of 2058) (difference, 7.41%; 95% CI, 2.67% to 12.2%; P<.001 for trend) for MU-OB. The prevalence of metabolically unhealthy underweight and overweight remained stable at 0.06% (11 of 19,941) (95% CI, 0.03% to 0.15%; P=.84 for trend) and 11.2% (2528 of 19,941) (95% CI, 10.6% to 11.8%; P=.29 for trend), respectively. Persistent differences in the prevalence of metabolic phenotypes were identified across multiple sociodemographic subgroups. For example, the prevalence of MH-OB increased from 7.58% (53 of 754) to 12.0% (79 of 694) (P<.001 for trend) for non-Hispanic Whites and 12.2% (60 of 567) to 18.4% (76 of 493) for Hispanics (P=.01 for trend) and remained stable at 22.6% (756 of 3,825) for non-Hispanic Blacks (P=.62 for trend and P=.05 for interaction). Results in secondary analyses revealed similar patterns.ConclusionFrom 1999 to 2018, US adults experienced major increases in the prevalence of both MH-OB and MU-OB, largely due to decreases in MH-N. The prevalence of MU-OB increased across all subgroups, with higher values observed in older adults and those with lower education and income levels.     

Changes in Burnout and Satisfaction With Work-Life Integration in Physicians and the General US Working Population Between 2011 and 2020

ObjectiveTo evaluate the prevalence of burnout and satisfaction with work-life integration (WLI) among physicians and US workers in 2020 relative to 2011, 2014, and 2017.MethodsBetween November 20, 2020, and March 23, 2021, we surveyed US physicians and a probability-based sample of the US working population using methods similar to our prior studies. Burnout and WLI were measured using standard tools. Information about specific work-related COVID-19 experiences was collected.ResultsThere were 7510 physicians who participated in the survey. Nonresponder analysis suggested that participants were representative of US physicians. Mean emotional exhaustion and depersonalization scores were lower in 2020 than in 2017, 2014, and 2011 (all P<.001). However, emotional exhaustion and depersonalization scores did not improve in specialties most heavily affected by COVID-19. Overall, 38.2% of physicians reported 1 or more symptoms of burnout in 2020 compared with 43.9% in 2017, 54.4% in 2014, and 45.5% in 2011 (all P<.001). Providing care without adequate personal protective equipment (odds ratio [OR], 1.53; 95% CI, 1.35 to 1.72) and having suffered disruptive economic consequences due to COVID-19 (OR, 1.49; 95% CI, 1.32 to 1.69) were independently associated with risk of burnout. On multivariable analysis, physicians were at increased risk for burnout (OR, 1.41; 95% CI, 1.25 to 1.58) and were less likely to be satisfied with WLI (OR, 0.71; 95% CI, 0.64 to 0.79) than other working US adults.ConclusionBurnout and satisfaction with WLI among US physicians improved between 2017 and 2020. The impact of the COVID-19 pandemic on physicians varies on the basis of professional characteristics and experiences. Physicians remain at increased risk for burnout relative to workers in other fields.     

Cost-Related Nonadherence to Medications Among US Adults With Chronic Liver Diseases

ObjectiveTo estimate the prevalence, risk factors, and consequences of cost-related medication nonadherence (CRN) in individuals with chronic liver diseases (CLDs) in the United States.Patients and MethodsUsing the National Health Interview Survey from January 1, 2014, to December 31, 2018, we identified individuals with CLDs. Using complex weighted survey analysis, we obtained national estimates and risk factors for CRN and its association with cost-reducing behaviors and measures of financial toxicity. We evaluated the association of CRN with unplanned health care use, adjusting for age, sex, race/ethnicity, insurance, income, education, and comorbid conditions.ResultsOf 3237 respondents (representing 4.6 million) US adults with CLDs, 813 (representing 1.2 million adults, or 25%; 95% CI, 23% to 27%) reported CRN, of whom 68% (n=554/813) reported maladaptive cost-reducing behaviors. Younger age, female sex, low income, and multimorbidity were associated with a higher prevalence of CRN. Compared with patients without CRN, patients experiencing CRN had 5.1 times higher odds of financial hardship from medical bills (adjusted odds ratio [aOR], 5.05; 95% CI, 3.73 to 6.83) and 2.9 times higher odds of food insecurity (aOR, 2.85; 95% CI, 2.02 to 4.01). The CRN was also associated with 1.5 times higher odds of emergency department visits (aOR, 1.46; 95% CI, 1.11 to 1.94).ConclusionWe observed a high prevalence of CRN and associated consequences such as high financial distress, financial hardship from medical bills, food insecurity, engagement in maladaptive cost-reducing strategies, increased health care use, and work absenteeism among patients with CLD. These financial determinants of health have important implications in the context of value-based care.     

Geographic Variation in Cardiovascular Health Among American Adults

ObjectiveTo evaluate the contemporary geographic trends in cardiovascular health in the United States and its relationship with geographic distribution of cardiovascular mortality.MethodsBy use of a retrospective cross-sectional design, the 2011-2017 Behavioral Risk Factor Surveillance System (BRFSS) was queried to determine the age-adjusted prevalence of cardiovascular health index (CVHI) metrics (sum of ideal blood pressure, blood glucose concentration, lipid levels, body mass index, smoking, physical activity, and diet). Cardiovascular health was estimated as both continuous (0 to 7 points) and categorical (ideal, intermediate, poor) variables from the BRFSS. Age-adjusted cardiovascular mortality for 2017 was obtained from the Centers for Disease Control and Prevention WONDER database.ResultsAmong 1,362,529 American adult participants of the BRFSS 2011-2017 and all American residents in 2017, the CVHI score increased from 3.89±0.004 in 2011 to 3.96±0.005 in 2017 (P_trend<.001) nationally, with modest improvement across all regions (P_trend<.05 for all). Ideal cardiovascular health prevalence improved in the northeastern (P_trend=.03) and southern regions (P_trend=.002). In 2017, the prevalence of coronary heart disease (6.8%; 95% CI, 6.5% to 7.1%) and stroke (3.7%; 95% CI, 3.4% to 3.9%) was highest in the southern region. The CVHI score (3.81±0.01) and the prevalence of ideal cardiovascular health (12.2%; 95% CI, 11.7% to 12.7%) were lowest in the southern United States. This corresponded to the higher cardiovascular mortality in the southern region (233.0 [95% CI, 232.2- to 33.8] per 100,000 persons).ConclusionDespite a modest improvement in CVHI, only 1 in 6 Americans has ideal cardiovascular health with significant geographic differences. These differences correlate with the geographic distribution of cardiovascular mortality. An urgent unmet need exists to mitigate the geographic disparities in cardiovascular morbidity and mortality.     

Changes in Burnout and Satisfaction With Work-Life Integration in Physicians During the First 2 Years of the COVID-19 Pandemic

ObjectiveTo evaluate the prevalence of burnout and satisfaction with work-life integration (WLI) in US physicians at the end of 2021, roughly 21 months into the COVID-19 pandemic, with comparison to 2020, 2017, 2014, and 2011.MethodsBetween December 9, 2021, and January 24, 2022, we surveyed US physicians using methods similar to those of our prior studies. Burnout, WLI, depression, and professional fulfillment were assessed with standard instruments.ResultsThere were 2440 physicians who participated in the 2021 survey. Mean emotional exhaustion and depersonalization scores were higher in 2021 than those observed in 2020, 2017, 2014, and 2011 (all P<.001). Mean emotional exhaustion scores increased 38.6% (2020 mean, 21.0; 2021 mean, 29.1; P<.001), whereas mean depersonalization scores increased 60.7% (2020 mean, 6.1; 2021 mean, 9.8; P<.001). Overall, 62.8% of physicians had at least 1 manifestation of burnout in 2021 compared with 38.2% in 2020, 43.9% in 2017, 54.4% in 2014, and 45.5% in 2011 (all P<.001). Although these trends were consistent across nearly all specialties, substantial variability by specialty was observed. Satisfaction with WLI declined from 46.1% in 2020 to 30.2% in 2021 (P<.001). Mean scores for depression increased 6.1% (2020 mean, 49.54; 2021 mean, 52.59; P<.001).ConclusionA dramatic increase in burnout and decrease in satisfaction with WLI occurred in US physicians between 2020 and 2021. Differences in mean depression scores were modest, suggesting that the increase in physician distress was overwhelmingly work related. Given the association of physician burnout with quality of care, turnover, and reductions in work effort, these findings have profound implications for the US health care system.     

Suicidal Ideation and Attitudes Regarding Help Seeking in US Physicians Relative to the US Working Population

ObjectiveTo evaluate the prevalence of suicidal ideation (SI) and attitudes regarding help seeking among US physicians relative to the general US working population.Participants and MethodsA secondary analysis of a cross-sectional survey of US physicians and a probability-based sample of the US working population was conducted between October 12, 2017, and March 15, 2018. Among 30,456 invited physicians, 5197 (17.1%) completed the primary survey. Suicidal ideation in the last year, attitudes regarding help seeking, symptoms of depression, and burnout were assessed by standardized questions.ResultsAmong the 4833 physicians who responded regarding SI, 316 (6.5%) reported having suicidal thoughts in the last 12 months. Most physicians (3527 [72.9%]) reported that they would seek professional help if they had a serious emotional problem. Physicians with SI were less likely to report that they would seek help (203/316 [64.2%]) than physicians without SI (3318/4517 [73.5%]; P=.001). On multivariable analysis, symptoms of depression (odds ratio [OR], 4.42; 95% CI, 1.89 to 11.52), emotional exhaustion (OR, 1.07 each 1-point increase; 95% CI, 1.03 to 1.11), and self-valuation (OR, 0.84 each 1-point increase; 95% CI, 0.70 to 0.99) were associated with SI. Among individuals aged 29 to 65 years, physicians were more likely than workers in other fields to report SI (7.1% vs 4.3%; P<.001), a finding that persisted on multivariable analysis.ConclusionIn this national study conducted before the COVID-19 pandemic, 1 in 15 US physicians had thoughts of taking their own life in the last year, which exceeded the prevalence of SI among US workers in other fields.     

Potentially Preventable Hospitalizations Among Adults With Pediatric-Onset Disabilities

ObjectiveTo examine the risk of any and specific potentially preventable hospitalizations (PPHs) for adults with cerebral palsy (CP) or spina bifida (SB). We hypothesize that PPH risk is greater among adults with CP/SB compared with the general population.Patients and MethodsUsing January 1, 2007, to December 31, 2017, national private administrative claims data (OptumInsight) in the United States, we identified adults with CP/SB (n=10,617). Adults without CP/SB were included as controls (n=1,443,716). To ensure a similar proportion in basic demographics, we propensity-matched our controls with cases in age and sex (n=10,617). Generalized estimating equation models were applied to examine the risk of CP/SB on PPHs. All models were adjusted for age, sex, race/ethnicity, health indicators, US Census Division data, and socioeconomic variables. Adjusted odds ratios were compared within a 4-year follow-up.ResultsAdults with CP/SB had higher risk for any PPH (odds ratio [OR], 4.10; 95% CI, 2.31 to 7.31), and PPHs due to chronic obstructive pulmonary disease/asthma (OR, 1.85; CI, 1.23 to 2.76), pneumonia (OR, 3.01; 95% CI, 2.06 to 4.39), and urinary tract infection (OR, 6.48; 95% CI, 3.91 to 10.75). Cases and controls who had an annual wellness visit had lower PPH risk (OR, 0.52; 95% CI, 0.41 to 0.67); similarly, adults with CP/SB who had an annual wellness visit compared with adults with CP/SB who did not had lower odds of PPH (OR, 0.75; 95% CI, 0.60 to 0.94).ConclusionAdults with pediatric-onset disabilities are at a greater risk for PPHs. Providing better access to preventive care and health-promoting services, especially for respiratory and urinary outcomes, may reduce PPH risk among this patient population.     

Adherence to a Mediterranean Lifestyle and Changes in Frequency,Severity, and Localization of Pain in Older Adults

ObjectiveTo assess the association between adherence to a Mediterranean lifestyle and changes in pain, and its characteristics over time in older adults.Patients and MethodsWe analyzed data from 864 and 862 community-dwelling individuals aged 65+ years from the Study on Cardiovascular Health, Nutrition and Frailty in Older Adults in Spain (Seniors-ENRICA) Seniors-ENRICA-1 (2008–2010 to 2012) and Seniors-ENRICA-2 (2015–2017 to 2019) cohorts, with a median follow-up of 2.8 and 2.4 years, respectively. Adherence to a Mediterranean lifestyle was assessed at baseline with the 27-item Mediterranean lifestyle (MEDLIFE) index. Pain changes over time were calculated with a pain scale that assessed the frequency, severity, and the number of pain locations both at baseline and follow-up. Multivariable-adjusted relative risk ratios (RRRs) were obtained using multinomial logistic regression.ResultsIn the pooled cohorts, after a median follow-up of 2.6 years, pain worsened for 697 participants, improved for 734, and did not change for 295. Compared with the lowest category of MEDLIFE adherence, those in the highest category showed an RRR of improvement vs worsening of overall pain of 1.85 (95% CI, 1.28 to 2.67; P-trend<.001). MEDLIFE adherence was also linked to improvement in pain frequency (RRR, 1.98; 95% CI, 1.31 to 3.01; P-trend=.001), pain severity (RRR, 2.00; 95% CI, 1.33 to 3.00; P-trend=.001), and a reduction in the number of pain locations (RRR, 1.68; 95% CI, 1.13 to 2.50; P-trend=.004). Limitations of this study are the use of self-reported lifestyle data.ConclusionA Mediterranean lifestyle was associated with improvement of pain characteristics in older adults. Experimental studies should assess the efficacy of an integral lifestyle approach for the management of pain in older adults.     

Implementation of a Comprehensive Patient Blood Management Program for Hospitalized Patients at a Large United States Medical Center

ObjectiveTo assess changes in inpatient transfusion utilization and patient outcomes with implementation of a comprehensive patient blood management (PBM) program at a large US medical center.Patients and MethodsThis is an observational study of graduated PBM implementation for hospitalized adults (age ≥18 years) from January 1, 2010, through December 31, 2017, at two integrated hospital campuses at a major academic US medical center. Allogeneic transfusion utilization and clinical outcomes were assessed over time through segmented regression with multivariable adjustment comparing observed outcomes against projected outcomes in the absence of PBM activities.ResultsIn total, 400,998 admissions were included. Total allogeneic transfusions per 1000 admissions decreased from 607 to 405 over the study time frame, corresponding to an absolute risk reduction for transfusion of 6.0% (95% confidence interval [CI]: 3.6%, 8.3%; P<.001) and a 22% (95% CI: 6%, 37%; P=.006) decrease in the rate of transfusions over projected. The risk of transfusion decreased for all blood components except cryoprecipitate. Transfusion reductions were experienced for all major surgery types except liver transplantation, which remained stable over time. Hospital length of stay (multiplicative increase in geometric mean 0.85 [95% CI: 0.81, 0.89]; P<.001) and incident in-hospital adverse events (absolute risk reduction: 1.5% [95% CI: 0.1%, 3.0%]; P=.04) were lower than projected at the end of the study time frame.ConclusionPatient blood management implementation for hospitalized patients in a large academic center was associated with substantial reductions in transfusion utilization and improved clinical outcomes. Broad-scale implementation of PBM in US hospitals is feasible without signal for patient harm.     

Relative Predictive Value of Circulating Immune Markers in US Adults Without Cardiovascular Disease: Implications for Risk Reclassification

ObjectiveTo investigate the relative predictive value of circulating immune cell markers for cardiovascular mortality in ambulatory adults without cardiovascular disease.MethodsWe analyzed data of participants enrolled in the National Health and Nutrition Examination Survey from January 1, 1999, to December 31, 2010, with the total leukocyte count within a normal range (4000-11,000 cells/μL [to convert to cells ×10⁹/L, multiply by 0.001]) and without cardiovascular disease. The relative predictive value of circulating immune cell markers measured at enrollment—including total leukocyte count, absolute neutrophil count, absolute lymphocyte count, absolute monocyte count, monocyte-lymphocyte ratio (MLR), neutrophil-lymphocyte ratio, and C-reactive protein—for cardiovascular mortality was evaluated. The marker with the best predictive value was added to the 10-year atherosclerotic cardiovascular disease (ASCVD) risk score to estimate net risk reclassification indices for 10-year cardiovascular mortality.ResultsAmong 21,599 participants eligible for this analysis, the median age was 47 years (interquartile range, 34-63 years); 10,651 (49.2%) participants were women, and 10,713 (49.5%) were self-reported non-Hispanic white. During a median follow-up of 9.6 years (interquartile range, 6.8-13.1 years), there were 627 cardiovascular deaths. MLR had the best predictive value for cardiovascular mortality. The addition of elevated MLR (≥0.3) to the 10-year ASCVD risk score improved the classification by 2.7%±1.4% (P=.04). Elevated MLR had better predictive value than C-reactive protein and several components of the 10-year ASCVD risk score.ConclusionAmong ambulatory US adults without preexisting cardiovascular disease, we found that MLR had the best predictive value for cardiovascular mortality among circulating immune markers. The addition of MLR to the 10-year risk score significantly improved the risk classification of participants.     

Racial Differences and Social Determinants of Health in Achieving Hypertension Control

ObjectiveTo investigate whether specific social determinants of health could be a “health barrier” toward achieving blood pressure (BP) control and to further evaluate any differences between Black patients and White patients.Patients and MethodsWe conducted a retrospective cohort study of 3305 patients with elevated BP who were enrolled in a hypertension digital medicine program for at least 60 days and followed up for up to 1 year. Patients were managed virtually by a dedicated hypertension team who provided guideline-based medication management and lifestyle support to achieve goal BP.ResultsCompared with individuals without any health barriers, the addition of 1 barrier was associated with lower probability of control at 1 year from 0.73 to 0.60 and to 0.55 in those with 2 or more barriers. Health barriers were more prevalent in Black patients than in those who were White (44.6% [482 of 1081] vs 31.3% [674 of 2150]; P<.001). There was no difference at all in BP control between Black individuals and those who were White if 2 or more barriers were present.ConclusionPatient-related health barriers are associated with BP control. Black patients with poorly controlled hypertension have a higher prevalence of health barriers than their White counterparts. When 2 or more health barriers were present, there was no differences in BP control between White and Black individuals.     

Outcomes Following Percutaneous Coronary Intervention in Renal Transplant Recipients: A Binational Collaborative Analysis

ObjectiveTo investigate the clinical and procedural characteristics in patients with a history of renal transplant (RT) and compare the outcomes with patients without RT in 2 national cohorts of patients undergoing percutaneous coronary intervention (PCI).Patients and MethodsData from the National Inpatient Sample (NIS) and British Cardiovascular Intervention Society (BCIS) were used to compare the clinical and procedural characteristics and outcomes of patients undergoing PCI who had RT with those who did not have RT. The primary outcome of interest was in-hospital mortality.ResultsOf the PCI procedures performed in 2004-2014 (NIS) and 2007-2014 (BCIS), 12,529 of 6,601,526 (0.2%) and 1521 of 512,356 (0.3%), respectively, were undertaken in patients with a history of RT. Patients with RT were younger and had a higher prevalence of congestive cardiac failure, hypertension, and diabetes but similar use of drug-eluting stents, intracoronary imaging, and pressure wire studies compared with patients who did not have RT. In the adjusted analysis, patients with RT had increased odds of in-hospital mortality (NIS: odds ratio [OR], 1.90; 95% CI, 1.41-2.57; BCIS: OR, 1.60; 95% CI, 1.05-2.46) compared with patients who did not have RT but no difference in vascular or bleeding events. Meta-analysis of the 2 data sets suggested an increase in in-hospital mortality (OR, 1.79; 95% CI, 1.40-2.29) but no difference in vascular (OR, 1.24; 95% CI, 0.77-2.00) or bleeding (OR, 1.21; 95% CI, 0.86-1.68) events.ConclusionThis large collaborative analysis of 2 national databases revealed that patients with RT undergoing PCI are younger, have more comorbidities, and have increased mortality risk compared with the general population undergoing PCI.     

Kidney Microstructural Features at the Time of Donation Predict Long-term Risk of Chronic Kidney Disease in Living Kidney Donors

ObjectiveTo determine whether microstructural features on a kidney biopsy specimen obtained during kidney transplant surgery predict long-term risk of chronic kidney disease in the donor.Patients and MethodsWe studied kidney donors from May 1, 1999, through December 31, 2018, with a follow-up survey for the results of recent blood pressure and kidney function tests (estimated glomerular filtration rate [eGFR] and proteinuria). If not recently available, blood pressure and eGFRs were requested from a local clinic. Microstructural features on kidney biopsy at the time of donation were assessed as predictors of hypertension and kidney function after adjusting for years of follow-up, baseline age, sex, and clinical predictors.ResultsThere were 807 donors surveyed a mean 10.5 years after donation. An eGFR less than 45 mL/min/1.73 m² in 6.4% (43/673) of donors was predicted by larger glomerular volume per standard deviation (odds ratio [OR], 1.48; 95% CI, 1.08 to 2.04) and nephron number below the age-specific 5th percentile (OR, 3.38; 95% CI, 1.31 to 8.72). An eGFR less than 60 mL/min/1.73 m² in 42.5% (286/673) of donors was not predicted by any microstructural feature. Residual eGFR (postdonation/predonation eGFR) was predicted by nephron number below the age-specific 5th percentile (difference, ?6.07%; 95% CI, ?10.24% to ?1.89%). Self-reported proteinuria in 5.1% (40/786) of donors was predicted by larger glomerular volume (OR, 1.42; 95% CI, 1.08 to 1.86). Incident hypertension in 18.8% (119/633) of donors was not predicted by any microstructural features.ConclusionLow nephron number for age and larger glomeruli are important microstructural predictors for long-term risk of chronic kidney disease after living kidney donation.     

Health Care Expenditures Attributable to Primary Care Physician Overall and Burnout-Related Turnover: A Cross-sectional Analysis

ObjectiveTo estimate the excess health care expenditures due to US primary care physician (PCP) turnover, both overall and specific to burnout.MethodsWe estimated the excess health care expenditures attributable to PCP turnover using published data for Medicare patients, calculated estimates for non-Medicare patients, and the American Medical Association Masterfile. We used published data from a cross-sectional survey of US physicians conducted between October 12, 2017, and March 15, 2018, of burnout and intention to leave one’s current practice within 2 years by primary care specialty to estimate excess expenditures attributable to PCP turnover due to burnout. A conservative estimate from the literature was used for actual turnover based on intention to leave. Additional publicly available data were used to estimate the average PCP panel size and the composition of Medicare and non-Medicare patients within a PCP’s panel.ResultsTurnover of PCPs results in approximately $979 million in excess health care expenditures for public and private payers annually, with $260 million attributable to PCP burnout-related turnover.ConclusionTurnover of PCPs, including that due to burnout, is costly to public and private payers. Efforts to reduce physician burnout may be considered as one approach to decrease US health care expenditures.     

Renin Production by Juxtaglomerular Cell Tumors and Clear Cell Renal Cell Carcinoma and the Role of Angiotensin Signaling Inhibitors

ObjectiveTo profile juxtaglomerular cell tumors (JXG) and histologic mimics by analyzing renin expression; to identify non-JXG renin-producing tumors in The Cancer Genome Atlas (TCGA) data sets; and to define the prevalence of hypertension (HTN) and patient outcomes with angiotensin signaling inhibitor (ASI) use in tumors of interest.Patients and MethodsThirteen JXGs and 10 glomus tumors (GTs), a histologic mimic, were evaluated for clinicopathologic features; TCGA data were analyzed to identify non-JXG renin-overexpressing tumors. An institutional registry was queried to determine the incidence of HTN, the use of ASIs in hypertensive patients, and the impact of ASIs on outcomes including progression-free survival (PFS) in a tumor type with high renin expression (clear cell renal cell carcinoma [CC-RCC] diagnosed between January 1, 2005, and December 31, 2012).ResultsWe found an association between renin production and HTN in JXG compared with GT. Analysis of TCGA data found that a subset of CC-RCCs overexpress renin relative to 29 other tumor types. Furthermore, analysis of our institutional registry revealed a high prevalence (64%) of HTN among 1203 patients treated with radical or partial nephrectomy for nonmetastatic CC-RCC. On multivariable Cox regression, patients with HTN treated with ASIs (34%) had improved PFS (hazard ratio, 0.76; 95% CI, 0.57 to 1.00; P=.05) compared with patients with HTN not treated with ASIs (30%).ConclusionThe identification of renin expression in a subset of CC-RCC may provide a biologic rationale for the high prevalence of HTN and improved PFS with ASI use in hypertensive patients with nonmetastatic CC-RCC.     

Portopulmonary Hypertension in Nontransplanted Patients: Results of the Largest US Single-Institution Registry

ObjectiveTo explore clinical characteristics, risk profiles, and outcomes of patients with portopulmonary hypertension (PoPH) who have contraindications to liver transplant (LT).MethodsFrom the largest US single-institution registry of patients with PoPH, we analyzed 160 patients who did not receive LT between 1988 to 2019. Pulmonary arterial hypertension (PAH)–pertinent characteristics, hemodynamic features, treatments, and risk stratification were compared at baseline, first follow-up visit, and censor/death time.ResultsMedian survival for the entire cohort was 27.5 months from the diagnosis of PoPH. Overall survival was 89%, 77%, 51%, and 38% at 6 months, 1 year, 3 years, and 5 years, respectively. Survival was significantly affected by the severity of liver disease (P<.001). Most patients received PAH-specific therapies (136 [85%]), predominantly monotherapy (123 [77%)]. With treatment, significant improvements were noted in World Health Organization functional class (P=.04), 6-minute walk distance (P<.001), right ventricular function (P<.001), pulmonary vascular resistance (P<.001), and Registry to Evaluate Early and Long-term Pulmonary Arterial Hypertension Disease Management (REVEAL) Lite 2 score (P=.02) univariately. Per European Society of Cardiology risk stratification, no patient met full criteria for low risk at baseline or at follow-up. In a multivariate Cox risk model, 6-minute walk distance, right atrial pressure, pulmonary capillary wedge pressure, bilirubin level, and Model for End-Stage Liver Disease–sodium score of 15 or higher were associated with increased risk of death.ConclusionPatients with PoPH who did not undergo LT had a poor prognosis. This persisted despite use of PAH-specific therapies and significant improvements in hemodynamics, echocardiography parameters of right ventricle function, 6-minute walk distance, and World Health Organization functional class.     

Synopsis of the 2020 US Department of Veterans Affairs/US Department of Defense Clinical Practice Guideline: The Non-Surgical Management of Hip and Knee Osteoarthritis

In July 2020, the US Department of Veterans Affairs (VA) and US Department of Defense (DoD) approved a new joint clinical practice guideline for the non-surgical management of hip and knee osteoarthritis. This synopsis highlights some of the recommendations. In February 2019, the VA/DoD Evidence-Based Practice Work Group convened a joint VA/DoD guideline development effort that included clinical stakeholders and conformed to the National Academy of Medicine’s tenets for trustworthy clinical practice guidelines. The guideline panel developed key questions, systematically searched (ie, Cochrane Database of Systematic Reviews, EMBASE, MEDLINE PreMEDLINE, PubMed, and the Agency for Healthcare Research and Quality website) and evaluated the literature, created a simple 1-page algorithm, and advanced 19 recommendations using the Grading of Recommendations Assessment, Development, and Evaluation system. This synopsis summarizes key recommendations in all 6 topics covered in the guideline. These topics are diagnosis, self-management, physical therapy, pharmacotherapy, orthobiologics, and complementary and integrative health.     

Prevalence and Natural History of Mitral Annulus Calcification and Related Valve Dysfunction

ObjectiveTo evaluate the prevalence and natural history of mitral annulus calcification (MAC) and associated mitral valve dysfunction (MVD) in patients undergoing clinically indicated echocardiography.MethodsA retrospective review was conducted of all adults who underwent echocardiography in 2015. Mitral valve dysfunction was defined as mitral regurgitation or mitral stenosis (MS) of moderate or greater severity. All-cause mortality during 3.0 (0.4 to 4.2) years of follow-up was compared between groups stratified according to the presence of MAC or MVD.ResultsOf 24,414 evaluated patients, 5502 (23%) had MAC. Patients with MAC were older (75±10 years vs 60±16 years; P<.001) and more frequently had MVD (MS: 6.6% vs 0.5% [P<.001]; mitral regurgitation without MS: 9.5% vs 6.1% [P<.001]). Associated with MS in patients with MAC were aortic valve dysfunction, female sex, chest irradiation, renal dysfunction, and coronary artery disease. Kaplan-Meier 1-year survival was 76% in MAC+/MVD+, 87% in MAC+/MVD?, 86% in MAC?/MVD+, and 92% in MAC?/MVD?. Adjusted for age, diabetes, renal dysfunction, cancer, chest irradiation, ejection fraction below 50%, aortic stenosis, tricuspid regurgitation, and pulmonary hypertension, MAC was associated with higher mortality during follow-up (adjusted hazard ratio, 1.40; 95% CI, 1.31 to 1.49; P<.001); MVD was associated with even higher mortality in patients with MAC (adjusted hazard ratio, 1.79; 95% CI, 1.58 to 2.01; P<.001). There was no significant interaction between MAC and MVD for mortality (P=.10).ConclusionIn a large cohort of adults undergoing echocardiography, the prevalence of MAC was 23%. Mitral valve dysfunction was more than twice as prevalent in patients with MAC. Adjusted mortality was increased in patients with MAC and worse with both MAC and MVD.     

Imposter Phenomenon in US Physicians Relative to the US Working Population

ObjectiveTo determine the prevalence of imposter phenomenon (IP) experiences among physicians and evaluate their relationship to personal and professional characteristics, professional fulfillment, burnout, and suicidal ideation.Participants and MethodsBetween November 20, 2020, and February 16, 2021, we surveyed US physicians and a probability-based sample of the US working population. Imposter phenomenon was measured using a 4-item version of the Clance Imposter Phenomenon Scale. Burnout and professional fulfillment were measured using standardized instruments.ResultsAmong the 3237 physician responders invited to complete the subsurvey including the IP scale, 3116 completed the IP questions. Between 4% (133) and 10% (308) of the 3116 physicians endorsed each of the 4 IP items as a “very true” characterization of their experience. Relative to those with a low IP score, the odds ratio for burnout among those with moderate, frequent, and intense IP was 1.28 (95% CI, 1.04 to 1.58), 1.79 (95% CI, 1.38 to 2.32), and 2.13 (95% CI, 1.43 to 3.19), respectively. A similar association between IP and suicidal ideation was observed. On multivariable analysis, physicians endorsed greater intensity of IP than workers in other fields in response to the item, “I am disappointed at times in my present accomplishments and think I should have accomplished more.”ConclusionImposter phenomenon experiences are common among US physicians, and physicians have more frequent experiences of disappointment in accomplishments than workers in other fields. Imposter phenomenon experiences are associated with increased burnout and suicidal ideation and lower professional fulfillment. Systematic efforts to address the professional norms and perfectionistic attitudes that contribute to this phenomenon are necessary.