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Showing 1-20 of 4,319 results
  1. Expanding the positivity offset theory of anhedonia to the psychosis continuum

    People with schizophrenia and negative symptoms show diminished net positive emotion in low-arousing contexts (diminished positivity offset) and...

    Marcel Riehle, Matthias Pillny, Tania M. Lincoln in Schizophrenia
    Article Open access 03 May 2022
  2. RSV testing practice and positivity by patient demographics in the United States: integrated analyses of MarketScan and NREVSS databases

    Background

    RSV-incidence estimates obtained from routinely-collected healthcare data (e.g., MarketScan) are commonly adjusted for under-reporting...

    Phuong T. Tran, Sabina O. Nduaguba, ... Almut G. Winterstein in BMC Infectious Diseases
    Article Open access 08 August 2022
  3. SARS-CoV-2, influenza A/B and respiratory syncytial virus positivity and association with influenza-like illness and self-reported symptoms, over the 2022/23 winter season in the UK: a longitudinal surveillance cohort

    Background

    Syndromic surveillance often relies on patients presenting to healthcare. Community cohorts, although more challenging to recruit, could...

    Elisabeth Dietz, Emma Pritchard, ... Ann Sarah Walker in BMC Medicine
    Article Open access 26 March 2024
  4. Role of diffusion-weighted MRI for prediction of regional lymph node positivity in radiologically organ-confined renal tumour: a prospective study

    Background

    Lymph node metastasis is one of the major factors that decide the prognosis of renal cell carcinoma. Presently, lymphadenectomy is only...

    Ashish Ghanghoria, Sasanka Kumar Barua, ... Vivek Sharma in African Journal of Urology
    Article Open access 29 August 2022
  5. Human norovirus (HuNoV) GII RNA in wastewater solids at 145 United States wastewater treatment plants: comparison to positivity rates of clinical specimens and modeled estimates of HuNoV GII shedders

    Background

    Human norovirus (HuNoV) is a leading cause of disease globally, yet actual incidence is unknown. HuNoV infections are not reportable in the...

    Alexandria B. Boehm, Marlene K. Wolfe, ... Amanda Bidwell in Journal of Exposure Science & Environmental Epidemiology
    Article Open access 07 August 2023
  6. Assessing secular trends in HIV rapid diagnostic test uptake and positivity in Northeast Iran, a country in MENA region; ingredients for target-specific prevention policies

    Background

    Iran is amongst the first three countries in Middle East and North Africa (MENA) region where two-thirds of region’s new HIV infections are...

    Zahra Yousefli, Najmeh Maharlouei, ... Roohollah Ghiami in BMC Infectious Diseases
    Article Open access 15 May 2023
  7. Short time to positivity of blood culture predicts mortality and septic shock in bacteremic patients: a systematic review and meta-analysis

    Background

    The value of time to positivity (TTP) on diagnosis for catheter-related bloodstream infection and distinguishment on bacteria group and...

    Ya-Chu Hsieh, Hsiao-Ling Chen, ... Po-Liang Lu in BMC Infectious Diseases
    Article Open access 10 February 2022
  8. Time-to-positivity of Mycobacterium avium complex in broth culture associates with culture conversion

    Background

    Mycobacterial time to positivity (TTP) in liquid culture media has predictive value for longer term outcomes in pulmonary tuberculosis, but...

    Christina M. Mingora, Bryan A. Garcia, ... Susan E. Dorman in BMC Infectious Diseases
    Article Open access 12 March 2022
  9. Threshold for defining PSMA-positivity prior to 177Lu-PSMA therapy: a comparison of [68Ga]Ga-PSMA-11 and [18F]F-DCFPyL in metastatic prostate cancer

    Background

    In 2022, the American Food and Drug Administration and the European Medicines Agency approved [ 177 Lu]Lu-PSMA-617 (PLUVICTO™, Novartis AG,...

    Jan Heilinger, Jasmin Weindler, ... Carsten Kobe in EJNMMI Research
    Article Open access 20 September 2023
  10. Role of microsatellite instability and HER2 positivity in locally advanced esophago-gastric cancer patients treated with peri-operative chemotherapy

    Purpose

    Neoadjuvant chemotherapy (NAC) significantly improved the prognosis of patients with locally advanced gastric cancer (LAGC). Several...

    Lorenzo Gervaso, Luca Bottiglieri, ... Nicola Fazio in Clinical and Translational Oncology
    Article 21 April 2023
  11. The association between subclinical hypothyroidism and TPOAb positivity with infertility in a population-based study: Tehran thyroid study (TTS)

    Background

    Thyroid autoimmunity(TAI) is the most prevalent autoimmune condition in women of fertile age. There are increasing data regarding the...

    Batul Birjandi, Fahimeh Ramezani Tehrani, ... Feriedoun Azizi in BMC Endocrine Disorders
    Article Open access 26 May 2021
  12. Deep learning-based amyloid PET positivity classification model in the Alzheimer’s disease continuum by using 2-[18F]FDG PET

    Background

    Considering the limited accessibility of amyloid position emission tomography (PET) in patients with dementia, we proposed a deep learning...

    Suhong Kim, Peter Lee, ... Yong Jeong in EJNMMI Research
    Article Open access 10 June 2021
  13. Intensity of immune/clotting assays relate to multiple antiphospholipid antibody positivity in thrombotic primary antiphospholipid syndrome

    The dual positivity (DP) and triple positivity (TP) concepts bypass the poor comparability of immune/clotting assay for the laboratory classification...

    Paul R. J. Ames, Mira Merashli, ... Antonio Ciampa in International Journal of Hematology
    Article 08 October 2020
  14. Longitudinal pathways of cerebrospinal fluid and positron emission tomography biomarkers of amyloid-β positivity

    Mismatch between CSF and PET amyloid-β biomarkers occurs in up to ≈20% of preclinical/prodromal Alzheimer’s disease individuals. Factors underlying...

    Arianna Sala, Agneta Nordberg, Elena Rodriguez-Vieitez in Molecular Psychiatry
    Article Open access 11 December 2020
  15. Proton-pump inhibitors are associated with a high false-positivity rate in faecal immunochemical testing

    Background

    False-positivity rates in faecal immunochemical test (FIT) can be affected by drug exposure. We aimed to assess the association between...

    Gemma Ibáñez-Sanz, Núria Milà, ... Victor Moreno in Journal of Gastroenterology
    Article 07 November 2020
  16. Impact of methodological choices in comparative effectiveness studies: application in natalizumab versus fingolimod comparison among patients with multiple sclerosis

    Background

    Natalizumab and fingolimod are used as high-efficacy treatments in relapsing–remitting multiple sclerosis. Several observational studies...

    M. Lefort, S. Sharmin, ... E. Leray in BMC Medical Research Methodology
    Article Open access 30 May 2022
  17. Model correction of diagnostic coding-based RSV incidence for children 0–4 years in the US

    Background

    Although administrative claims data have a high degree of completeness, not all medically attended Respiratory Syncytial Virus-associated...

    Sabina O. Nduaguba, Phuong T. Tran, Almut G. Winterstein in BMC Infectious Diseases
    Article Open access 21 June 2024
  18. Hepatitis C viraemic and seroprevalence and risk factors for positivity in Northwest Cambodia: a household cross-sectional serosurvey

    Background

    Despite a dramatic reduction in HCV drug costs and simplified models of care, many countries lack important information on prevalence and...

    Emily Lynch, Gregoire Falq, ... David Maman in BMC Infectious Diseases
    Article Open access 26 February 2021
  19. Trends in non-focal neurological chief complaints and CT angiography utilization among adults in the emergency department

    Prudent imaging use is essential for cost reduction and efficient patient triage. Recent efforts have focused on head and neck CTA in patients with...

    Grant H. Rigney, Alexander H. King, ... Marc D. Succi in Internal and Emergency Medicine
    Article 21 March 2024
  20. Does cavity margin shaving reduce residual tumor and re‐excision rates? A systematic review

    Purpose

    Cavity shaving (CS) is a surgical technique used in the treatment of breast cancer (BC). It may reduce margin positivity in histologic...

    M. Fernandez‐Pacheco, O. Ortmann, ... E. C. Inwald in Archives of Gynecology and Obstetrics
    Article Open access 20 May 2022
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