Publications by authors named "John D Barry"
Due to the widespread use of insecticides in agriculture and for urban pest control, there is the potential for contamination of groundwater systems. Five neonicotinoids, fipronil, and nine transformation products (desnitro-imidacloprid, imidacloprid olefin, imidacloprid urea, acetamiprid-n-desmethyl, thiacloprid amide, 6-chloronicotinic acid, fipronil desulfinyl, fipronil sulfide, and fipronil sulfone) were studied in samples from 15 springs and 75 unique wells from 13 counties over four years (2019-2022) in Minnesota. Up to 13 neonicotinoids and fiproles were identified in groundwater samples from springs and 10 from wells.
View Article and Find Full Text PDFBackground: The aims of this study were to assess the role of endoscopic ultrasound (EUS) in the evaluation of adenocarcinoma of the head of the pancreas in cases of diagnostic dilemma and to determine the strength of agreement between perceived pre-operative stage as determined by computerised tomography (CT) and EUS and histopathological stage.
Methods: Patients undergoing pancreatic EUS were identified from a computerised radiology database. The strengths of agreement between the radiological and histopathological stages were determined by the weighted kappa (Kw) statistic.
Background: Our goals were to measure the accuracy of specialist helical computed tomography (CT) in the preoperative staging of gastric cancer, to determine the relative benefit of progressive CT system technology, and to determine the magnitude of any learning curve in radiological interpretation.
Methods: One hundred patients (median age, 70 years; range 27-86 years; 68 male) underwent a preoperative CT (73 helical [hCT], 27 multislice [mCT]), performed by a single specialist radiologist, followed by surgery within 3 weeks. The strength of the agreement between the perceived CT stage and the histopathological stage was determined for each CT system and also for four serial cohorts of 25 patients, by the weighted Kappa statistic (Kw).