Examining the relationship between incidence and mortality for commonly diagnosed cancers in the USA: an observational study using population-based SEER database by H Gilbert Welch, Adewole S Adamson, Vishal R Patel

“…We assessed the relationship between incidence and mortality for commonly diagnosed cancers in the USA.Design Population-based observational study of US counties.Setting and participants The Surveillance, Epidemiology and End Results (SEER) database was used to obtain incidence (2000–2016) and mortality (2002–2018) data for the 12 most commonly diagnosed non-haematologic cancers.Outcome measures County-level correlation between cancer incidence and mortality. …”
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Chronic Liver Disease in Ethiopia with a Particular Focus on the Etiological Spectrums: A Systematic Review and Meta-Analysis of Observational Studies by Behailu Terefe Tesfaye, Temesgen Mulugeta Feyissa, Azmeraw Bekele Workneh, Esayas Kebede Gudina, Mengist Awoke Yizengaw

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How many stroke survivors develop problematic spasticity requiring pharmacological therapy? An international (Europe and USA) observational study protocol by Pascal Maisonobe, Sergiu Groppa, Simon Page, Richard D Zorowitz, Laura Serrano Barrenechea, Simon Butet, David Hernández Herrero, Rama Prasad, Susan Sandars, Seema Meloni, Alessandro Picelli

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Association between university students’ two-staged health screening and student health care utilisation: register based observational study by Tuomas Koskela, Noora Seilo, Susanna Paldanius, Reija Autio, Kristina Kunttu, Minna Kaila

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Association of Subjective Cognitive Concerns With Performance on Mobile App–Based Cognitive Assessment in Cognitively Normal Older Adults: Observational Study by Caroline O Nester, Alyssa N De Vito, Sarah Prieto, Zachary J Kunicki, Jennifer Strenger, Karra D Harrington, Nelson Roque, Martin J Sliwinski, Laura A Rabin, Louisa I Thompson

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Correlation Between the Grade of Hydronephrosis with Surgical Outcomes After Ultrasound-guided Supine Percutaneous Nephrolithotomy: A Retrospective Observational Study by Tiopan NAPITUPULU, Yosua HARDJA, Martin SUSANTO, Grace Dumamawarni HUTAHAEAN, Ika RIANTRI, Hendra SUTAPA, Yusuf RACHMAN, Andre Marolop Pangihutan SIAHAAN

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Safety and Efficacy of Bivalirudin versus Unfractionated Heparin Monotherapy in Patients with CAD and DM Undergoing PCI: A Retrospective Observational Study by Jing Li, Sanbao Chen, Sicong Ma, Mingque Yang, Zizhao Qi, Kun Na, Miaohan Qiu, Yi Li, Yaling Han

“…This retrospective observational study is aimed at evaluating efficacy and safety of bivalirudin versus unfractionated heparin (UFH) monotherapy in patients with DM undergoing PCI. …”
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Endovascular Treatment of Right Heart Masses Utilizing the AngioVac System: A 6-Year Single-Center Observational Study by Aashish Katapadi, Lauren Richards, William Fischer, Suhail Q. Allaqaband, Tanvir Bajwa, M. Fuad Jan

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An Observational Study of Glomerular Functions in Beta-thalassemia Major Children by Schwartz Formula and Technetium 99m Diethylenetriaminepentaacetic Acid Renogram by Sukanta Mandal, Tathagata Bose, Rachna Gulati, Manish Singh Ahuja

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The Identical External Reference Point Standardized to the Zero-Reference Level for Measuring Both Central and Jugular Venous Pressures: An Observational Study by Niraj Karmacharya, Madhur Dev Bhattarai, Amita Pradhan

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Biological subphenotypes in patients hospitalized with suspected infection in Thailand: a secondary analysis of a prospective observational studyResearch in context by Prapassorn Poolchanuan, Taylor D. Coston, Viriya Hantrakun, Parinya Chamnan, Gumphol Wongsuvan, Pavan K. Bhatraju, Narisara Chantratita, Direk Limmathurotsakul, T. Eoin West, Shelton W. Wright

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Association Between Fentanyl Use and Post-Intubation Mean Arterial Pressure During Rapid Sequence Intubation: Prospective Observational Study by Abdullah Bakhsh, Ahmad Bakhribah, Raghad Alshehri, Nada Alghazzawi, Jehan Alsubhi, Ebtesam Redwan, Yasmin Nour, Ahmed Nashar, Elmoiz Babekir, Mohamed Azzam

“…Methods: This prospective observational study included patients undergoing RSI at an academic emergency department (ED) over a three-year period between January 1, 2018–January 1, 2021. …”
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Lung Function and Relevant Clinical Factors in Very Low Birth Weight Preterm Infants with Chronic Lung Disease: An Observational Study by I-Ling Chen, Hsiu-Lin Chen

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Are adverse childhood experiences scores associated with heroism or villainy? A quantitative observational study of Marvel and DC Cinematic Universe characters. by Julia Wigmore, Bilal Ahmed, Gabriel Joaquino, Elke Jaibeeh Barah, Zahra Upal, Teressa Boring, Marika Lee, Eron Muel, Samantha Perry, Sandra Davidson, Carla Ginn, Carla Ferreira, Twyla Ens, Jennifer Jackson

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Analysis of “Dr Ding Xiang” on WeChat in China to Determine Factors Influencing Readership on Medical Social Media: Observational Study by Jiaman Liao, Xueliang Huang, Hao Huang, Cuina Shen, Lixia Li, Yushao Li, Yiqiang Zhan

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Chronic obstructive pulmonary disease and heart failure in real life: the tip of the iceberg in the sea of comorbidities. A prospective observational study by Ombretta Para, Marco Vanetti, Chiara Dibonaventura, Davide Salerno, Lorenzo Caruso, Christian Carleo, Asim Raza, Carlo Nozzoli, Antonio Spanevello

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Genomic analysis of the SMN1 gene region in patients with clinically diagnosed spinal muscular atrophy: a retrospective observational study by Tamaki Kato, Mamoru Yokomura, Yutaka Osawa, Kensuke Matsuo, Yuji Kubo, Taihei Homma, Kayoko Saito

“…Methods This retrospective observational study conducted in Japan used pre-collected DNA samples from patients with clinically diagnosed SMA. …”
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Stroke Event Factors among Adult Patients Admitted to Stroke Unit of Jimma University Medical Center: Prospective Observational Study by Ginenus Fekadu, Hunduma Wakassa, Firew Tekle

“…Methods. Prospective observational study was carried at stroke unit of Jimma University Medical Center for 4 consecutive months from March 10 to July 10, 2017. …”
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Prevalence of Emergence Delirium and Associated Factors among Older Patients Who Underwent Elective Surgery: A Multicenter Observational Study by Gezahegn Tesfaye Mekonin, Megersa Kelbesa Olika, Mitiku Birhanu Wedajo, Ashanafi Tolasa Badada, Abebe Dukessa Dubiwak, Tajera Tageza Ilala, Mamo Nigatu Gebre

“…A multicenter prospective observational study was conducted at the postanesthetic care unit in the four teaching hospitals of Ethiopia. …”
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Commentary on “Differences in Characteristics Between First‐Ever Foot Ulcer and Recurrent Foot Ulcer in Patients With Diabetes: Prospective Observational Study” by Mostafa Javanian, Mohammad Barary, Soheil Ebrahimpour

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