Publications by authors named "John Sahrmann"

Article Synopsis
  • - The study compares the safety of narrow-spectrum vs. broad-spectrum antibiotics for treating community-acquired pneumonia (CAP) in healthy adults aged 18-64, revealing that broad-spectrum antibiotics have a higher risk of adverse drug events (ADEs).
  • - An analysis of 145,137 patients showed that broad-spectrum antibiotics like fluoroquinolones and β-lactams were linked to increased risks of issues such as nausea, diarrhea, and vulvovaginal infections compared to macrolide monotherapy.
  • - The findings highlight the need for better antimicrobial stewardship to encourage the careful use of antibiotics, particularly broad-spectrum ones, to minimize the risk of harmful side effects.
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Background: Several antiretroviral therapy (ART) medications have been associated with increased cardiovascular risk, but less is known about the safety of modern ART. We sought to compare the risk of major adverse cardiac events (MACEs) among different ART regimens.

Methods: Using insurance claims databases from 2008 to 2020, we identified adults aged <65 years who newly initiated ART.

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Article Synopsis
  • Advances in DNA sequencing technology have made it faster and more affordable, leading to improved data availability and the need for complex algorithms and workflows.
  • Metapipeline-DNA is a customizable and flexible analysis pipeline that handles various processing tasks like read alignment, variant calling, and quality control, making it easier to analyze DNA sequencing data.
  • This open-source tool is available under the GPLv2 license and can be accessed for free at https://github.com/uclahs-cds/metapipeline-DNA.
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Background: The Advisory Committee on Immunization Practices (ACIP) recommends early childhood vaccinations, but knowledge is limited about the magnitude and timing of vaccine delay for each recommended dose on a population level. We sought to characterize longitudinal patient-level patterns of early childhood vaccination schedule adherence.

Methods: Using the Merative MarketScan Commercial Database (2009-2019), we identified commercially-insured infants who received at least one timely dose of a 2-month recommended vaccine.

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Background: Better understanding differences associated with antibiotic prescribing for acute sinusitis can help inform antibiotic stewardship strategies. We characterized antibiotic prescribing patterns for acute sinusitis among commercially insured adults and explored differences by patient- and prescriber-level factors.

Methods: Outpatient encounters among adults aged 18 to 64 years diagnosed with sinusitis between 2016 and 2020 were identified by national administrative claims data.

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Background And Objective: There is no consensus on de-escalation of monitoring during active surveillance (AS) for prostate cancer (PCa). Our objective was to determine clinical criteria that can be used in decisions to reduce the intensity of AS monitoring.

Methods: The global prospective AS cohort from the Global Action Plan prostate cancer AS consortium was retrospectively analyzed.

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Article Synopsis
  • This study evaluated how antibiotics are prescribed for outpatient community-acquired pneumonia (CAP) in U.S. adults, finding that broad-spectrum antibiotics are still frequently used despite guidelines recommending otherwise.
  • From 2008 to 2019, the use of broad-spectrum antibiotics decreased significantly among both healthy patients and those with comorbidities, but more than a third of each group still received them.
  • Factors such as age, geographic region, and healthcare provider specialty influenced the prescription patterns of these antibiotics.
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Objective: To determine the relationship between severe acute respiratory syndrome coronavirus 2 infection, hospital-acquired infections (HAIs), and mortality.

Design: Retrospective cohort.

Setting: Three St.

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In a US adult population aged <65 years, attributable costs due to infection (CDI) were highest in persons with hospital onset and lowest in those with community-associated CDI treated outside a hospital. The economic burden of CDI in younger adults underscores the need for additional CDI-preventive strategies.

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In this retrospective cohort from 3 Missouri hospitals from January 2017 to August 2020, hospital-onset Clostridioides difficile infections were more common during the severe acute respiratory syndrome coronavirus 2 pandemic at the tertiary care hospital. Risk factors associated with hospital-onset C difficile infection included the year of hospitalization, age, high-risk antibiotic use, acid-reducing medications, chronic comorbidities, and severe acute respiratory syndrome coronavirus 2 infection.

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Objective: To examine the risk of developing an overweight or obese (O/O) body condition score (BCS) in gonadectomized versus intact dogs and, separately, the impact of age at gonadectomy on O/O outcomes among sterilized dogs.

Animals: Dogs were patients of Banfield Pet Hospital in the US from 2013 to 2019. After exclusion criteria were applied, the final sample consisted of 155,199 dogs.

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Objective: To use interrupted time-series analyses to investigate the impact of the coronavirus disease 2019 (COVID-19) pandemic on healthcare-associated infections (HAIs). We hypothesized that the pandemic would be associated with higher rates of HAIs after adjustment for confounders.

Design: We conducted a cross-sectional study of HAIs in 3 hospitals in Missouri from January 1, 2017, through August 31, 2020, using interrupted time-series analysis with 2 counterfactual scenarios.

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Background: The dimorphic mycoses (DMs) of the United States-Histoplasma, Coccidioides, and Blastomyces-commonly known as endemic mycoses of North America (in addition to Paracoccidioides) are increasingly being diagnosed outside their historical areas of endemicity. Despite this trend, the maps outlining their geographic distributions have not been updated in more than half a century using a large, nationwide database containing individual-patient-level data.

Methods: This was a retrospective analysis of >45 million Medicare fee-for-service beneficiaries from 1 January 2007 through 31 December 2016.

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Article Synopsis
  • A study aimed to analyze the clinical and financial impacts of inappropriate antibiotic prescriptions for common respiratory infections found that many adults received antibiotics incorrectly; 43%-56% for bacterial and 7%-66% for viral infections.
  • The use of inappropriate antibiotics led to a heightened risk of adverse drug events, such as Clostridioides difficile infections and gastrointestinal issues, with significant hazard ratios indicating increased risks.
  • Additionally, inappropriate prescriptions resulted in higher healthcare costs for patients, with $18-$67 more spent for bacterial infections and variable costs for viral infections.
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Background: Although hospital-onset Clostridioides difficile infection (CDI) is associated with significant healthcare costs, the economic burden of CDI with onset in other facilities or the community has not been well studied.

Methods: Incident CDI cases were identified using 2011-2017 Medicare fee-for-service data. Controls were randomly selected in a 4:1 ratio matching to the CDI case surveillance definition.

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Purpose: Acute otitis media (AOM) is a common indication for antibiotics in children. We sought to characterize the frequency of nonguideline concordant antibiotic therapy for AOM in the United States, by agent and duration.

Methods: Using national administrative claims data (2016-2019), we identified children aged 6 months to 17 years with an oral antibiotic dispensed within 3 days of a new diagnosis of suppurative AOM.

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Importance: Nonguideline antibiotic prescribing for the treatment of pediatric infections is common, but the consequences of inappropriate antibiotics are not well described.

Objective: To evaluate the comparative safety and health care expenditures of inappropriate vs appropriate oral antibiotic prescriptions for common outpatient pediatric infections.

Design, Setting, And Participants: This cohort study included children aged 6 months to 17 years diagnosed with a bacterial infection (suppurative otitis media [OM], pharyngitis, sinusitis) or viral infection (influenza, viral upper respiratory infection [URI], bronchiolitis, bronchitis, nonsuppurative OM) as an outpatient from April 1, 2016, to September 30, 2018, in the IBM MarketScan Commercial Database.

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Background: Integrase strand transfer inhibitors (INSTIs) are associated with weight gain in people with HIV (PWH). Less is known about the risk of other metabolic outcomes such as diabetes mellitus and hyperglycemia.

Methods: IBM® MarketScan® databases for commercially and Medicaid-insured adults were used to identify PWH newly initiating antiretroviral therapy (ART).

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Purpose/background: Antipsychotic drugs are well established to alter circulating prolactin levels by blocking dopamine D2 receptors in the pituitary. Prolactin activates many genes important in the development of breast cancer. Prior studies have found an association with antipsychotic use and risk of breast cancer.

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Fecal glucocorticoid metabolite (FGM) concentrations, activity, and personality were assessed for 35 fennec foxes () to determine whether animals managed as ambassadors differed from exhibit or off-exhibit animals. A FGM assay, pedometer, and personality assessment tool were validated. Then, fecal samples and movement data were collected during winter and summer periods.

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Background And Aims: Persons with opioid use disorder (OUD) and co-occurring alcohol use disorder (AUD) are understudied. We identified whether co-occurring AUD was associated with OUD treatment type, compared associations between treatment type and six-month treatment retention and determined whether co-occurring AUD moderated these relationships.

Methods: We used an observational cohort study design to analyze insurance claims data from 2011 to 2016 from persons aged 12-64 with an opioid abuse or opioid dependence diagnosis and OUD treatment claim.

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Background: Important questions exist regarding the comparative effectiveness of alternative childhood vaccine schedules; however, optimal approaches to studying this complex issue are unclear.

Methods: We applied methods for studying dynamic treatment regimens to estimate the comparative effectiveness of different rotavirus vaccine (RV) schedules for preventing acute gastroenteritis-related emergency department (ED) visits or hospitalization. We studied the effectiveness of six separate protocols: one- and two-dose monovalent rotavirus vaccine (RV1); one-, two-, and three-dose pentavalent rotavirus vaccine (RV5); and no RV vaccine.

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Background: Preoperative opioid use is associated with increased health care use after elective abdominal surgery. However, the scope of preoperative opioid use and its association with outcomes have not been described in elective pulmonary resection. This study aimed to characterize prevalent preoperative opioid use in patients undergoing elective pulmonary resection and compare clinical outcomes between patients with and without preoperative opioid exposure.

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Objectives: Post-traumatic stress disorder, depression, and anxiety have all been found in parents of PICU survivors. How these research findings translate to actual use of mental health services by parents remains unknown.

Design: Retrospective observational cohort study.

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