‘Dynamic zero-COVID’ policy and viral clearance during an omicron wave in Tianjin, China: a city-wide retrospective observational study by Qi Wu, Yan Xie, Tao Cheng, Junping Wu, Wentao Jiang, Lixia Shi, Xiaolong Liu, Yu Hu, Yahui Feng, Hongxia Shao, Xiaowen Gong, Zhen Song, Saibing Qi, Xueou Liu, Qiujin Shen, Junren Chen

“…We also sought to better understand how clinical features affected the timing of viral clearance.Design A retrospective study of the omicron wave in Tianjin between 8 January 2022 and 3 March 2022.Setting Except for the first cases on 8 January, all the omicron cases were identified through PCR mass testing in the residential communities. …”
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Impact of the COVID-19 pandemic on epidemiological and clinical characteristics of inpatients with burns in a Northwest China burn centre: a retrospective study by Jiaqi Liu, Jian Feng, Yuheng Zhang, Yiwei Cui, Shuao Xiao, Yige Han, Yongqian Bian, Xueyong Li

“…Objective This study aimed to assess the impact of the COVID-19 pandemic on the characteristics and outcomes of patients with burns in a burn centre situated in Northwest China.Design A retrospective descriptive study.Setting This study was conducted in Tangdu Hospital, a major regional burn centre in Xi'an, Shaanxi Province of China.Participants A total of 1413 patients with burns were included in the study, with the admission period spanning from 2017 to 2019 (before the pandemic) and 2020 to 2022 (during the pandemic).Results Burn hospitalisations decreased during the pandemic for both children (9.80%) and adults (24.68%). …”
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Evolution of the microbiota of wound infections in military personnel during the full-scale russian invasion: a retrospective cohort study (2022–2024) by N.A. Beley, O.A. Loskutov, A.M. Strokan, O.B. Izmaylova

“…Materials and methods. We conducted a retrospective cohort study of servicemen who were injured during hostilities and were treated at the Feofaniya Clinical Hospital from March 2022 to March 2024. …”
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Association Between Vaso-Occlusive Crises and Opioid Prescriptions Among Patients with Sickle Cell Disease: A Retrospective Claims-Based Study by Hyeun Ah Kang, Jamie C. Barner, Kristin M. Richards, Menaka Bhor, Jincy Paulose, Abdullah Kutlar

“…**Methods:** This was a retrospective cohort study using Texas Medicaid medical and prescription claims between September 2011 and August 2016. …”
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Technical quality of root canal treatment performed by undergraduate students using rotary instruments versus hand instruments: A Retrospective Study by Seyda Ersahan, Nur Sena Arıkan, Yelda Erdem Hepşenoğlu, Alperen Tekin

“…Materials and Methods: Dental records of 270 patients who received RCT undertaken by dental students were investigated by retrospective chart review. 565 root canals belonging to 270 patients were randomized into two groups [(rotary, n=280, and manual hand instruments, n=285)]. …”
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High-Flow Nasal Cannula versus Noninvasive Ventilation in AECOPD Patients with Respiratory Acidosis: A Retrospective Propensity Score-Matched Study by Meng Wang, Feifan Zhao, Lina Sun, Ying Liang, Wei Yan, Xiaoyan Sun, Qingtao Zhou, Bei He

“…Methods. We conducted a retrospective study to compare the efficacy of HFNC with NIV as initial ventilation support strategy in AECOPD patients with respiratory acidosis. …”
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Diagnostic accuracy of 4D-MRA for the detection and localization of spinal dural arteriovenous fistulas: A retrospective 10-year cohort study by Frederick J.A. Meijer, Vincent Raymaekers, Sjoert A.H. Pegge, Jeroen HD. Boogaarts

“…Material and methods: Single center retrospective cohort study of patients with the clinical suspicion of a SDAVF. …”
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Pectus Carinatum Repair Using the Sandwiched Bars and Screw Fixation System: A Retrospective Cohort Study of a Single Center Experience by Tran Thanh Vy, Ho Tat Bang, Ha Quoc Hung, Lam Thao Cuong, Nguyen Hoang Binh

“…This study evaluated the safety, effectiveness, and factors associated with the treatment of PC using a sandwiched bar and screw fixation system, first performed in Vietnam at the University Medical Center Ho Chi Minh City in 2016. Methods This retrospective cohort study was conducted from March 2016 to February 2023 in patients with PC and PC‐mixed pectus excavatum (PE) deformities. …”
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Recurrent Thrombotic Events after Discontinuation of Vitamin K Antagonist Treatment for Splanchnic Vein Thrombosis: A Multicenter Retrospective Cohort Study by Nicoletta Riva, Walter Ageno, Daniela Poli, Sophie Testa, Serena Rupoli, Rita Santoro, Teresa Lerede, Antonietta Piana, Monica Carpenedo, Alberto Nicolini, Piera Maria Ferrini, Giuliana Martini, Catello Mangione, Laura Contino, Carlo Bonfanti, Paolo Gresele, Alberto Tosetto

“…The aim of this study was to evaluate the risk of venous and arterial thrombosis after discontinuation of vitamin K antagonist (VKA) in SVT patients. Retrospective information from a cohort of SVT patients treated with VKA and followed by 37 Italian Anticoagulation Clinics, up to June 2013, was collected. …”
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Safety of interleukin inhibitors in patients with plaque psoriasis and history of neoplasms: a multicenter retrospective study – IL PSO (Italian landscape psoriasis) by Mario Valenti, Luciano Ibba, Sara Di Giulio, Luigi Gargiulo, Piergiorgio Malagoli, Anna Balato, Carlo G. Carrera, Paolo Dapavo, Eugenia V. Di Brizzi, Valentina Dini, Francesca Gaiani, Francesco Loconsole, Angelo V. Marzano, Matteo Megna, Alessandra Michelucci, Luca Potestio, Simone Ribero, Antonio Costanzo, Alessandra Narcisi

“…However, their use in patients with a history of cancer is debated.Objective: We conducted a multicenter retrospective study across nine Italian Dermatology Units to assess the real-world effectiveness and safety of IL inhibitors (IL-23, IL-17, IL-12/23) in 136 oncological patients with moderate-to-severe plaque psoriasis. …”
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Retrospective Evaluation of Potassium Hydroxide Mounts and Fungal Cultures in Suspected Mycotic Keratitis at a Tertiary Eye Care Center in South India by Swetha Mallagundla, Samyakta Shetti, Vidhya S Eswaran, Shraddha Sudarshan, Umme Kulsum, Swetha Shubraj, Mohsina Mekhri

“… Aim To evaluate the diagnostic utility of Potassium Hydroxide KOH wet mounts and fungal cultures FC in clinically suspected mycotic keratitis cases.Methods A retrospective study was conducted analyzing microbiological records of 150 patients with suspected mycotic keratitis from November 2016 to November 2017 at a tertiary eye care center in South India. …”
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Stapled End-To-Side Ileocolic Anastomosis in Crohn’s Disease: Old Dog, Reliable Tricks? A Retrospective Two-Center Cohort Study by Volkan Doğru, MD, Jean H. Ashburn, MD, Umut Akova, BS, Alton G. Sutter, MD, Eren Esen, MD, Emily M. Gardner, MD, Andre da Luz Moreira, MD, Arman Erkan, MD, John Kirat, MD, Michael J. Grieco, MD, Feza H. Remzi, MD

“…Yet, despite heterogeneous data from different anastomotic configurations, there remains no clear guidance as to the optimal technique. Methods:. In a retrospective cohort design, patients undergoing ileocolic anastomosis in the setting of Crohn’s disease between 2016 and 2021 at two institutions were identified. …”
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The Effect of Lower-Limb Exercise on Pain Management of the Patients Undergoing Posterior Lumbar Fusion Surgery: A Retrospective Case-Control Study by Tong Wu, Yong Ye

“…The patients undergoing posterior lumbar fusion surgeries between 01/2018 and 06/2021 were retrospectively identified, with their data collected. …”
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Preoperative carcinoembryonic antigen to lymphocyte ratio serves as a prognostic predictor in elderly patients with colorectal cancer: a multicentre retrospective study by Lei Jiang, Ning Tan, Xiaonan Zhang, Jiayi Jiang, Xinyi Li, Gang Deng, Tao Liang, Haohan Ma, Weiping Deng, Lichang Guan, Kaijun Zhang, Xujie Cai, Lishu Xu

“…Objectives The aim of this study is to derive and validate a reliable indicator for predicting an increased risk of postoperative mortality in elderly patients undergoing curative resection for colorectal cancer (CRC).Design This study is of multicentre retrospective design.Setting and participants A total of 1227 CRC patients undergoing curative resection (age ≥65 years) from three distinct cohorts were retrospective enrolled. …”
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Impact of estimated glomerular filtration rate (eGFR) on in-hospital mortality: an age- and HIV status-specific retrospective cohort study in Uganda by Odong Christopher, Wang Yanmei, Makabayi Emmanuel Yeko, Doreen Mary Nanyunja, Kuule Julius Kabbali

“…Methods and results We retrospectively included 226 patients(age 45.35 ± 18.85yrs, 54.4% women) admitted to Naguru-referral hospital between January 1st and June 30th, 2024. …”
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Evaluation of Superselective Transcatheter Arterial Embolization with n-Butyl Cyanoacrylate in Treating Lower Gastrointestinal Bleeding: A Retrospective Study on Seven Cases by Yuan Zhao, Gang Li, Xiang Yu, Ping Xie

“…To investigate the safety and efficacy of superselective transcatheter arterial embolization (TAE) with n-butyl cyanoacrylate (NBCA) in treating lower gastrointestinal bleeding caused by angiodysplasia. Methods. A retrospective study was performed to evaluate the clinical data of the patients with lower gastrointestinal bleeding caused by angiodysplasia. …”
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Preoperative Nutritional Status and Risk Factors Associated with Delayed Discharge in Geriatric Patients Undergoing Gastrectomy: A Single-Center Retrospective Study by Xining Zhao, Jie Liu, Ying Wang, Yuying Yang, Yan Pan, Shengjin Ge

“…The study is aimed at investigating the prevalence of malnutrition, perioperative nutritional support, and the risk factors associated with delayed discharge of geriatric patients undergoing gastrectomy. Methods. A retrospective study of gastric cancer patients (age≥65) who underwent gastrectomy at Zhongshan Hospital from January 2018 to May 2020 was conducted. …”
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Patients With Isolated Nail Psoriasis Are at Increased Risk for Asthma Compared to Controls in a Retrospective Cohort Study at a Single Academic Institution by Rachel C Hill, Rhiannon C Miller, Shari R Lipner

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A surveillance study to determine the accuracy of mild traumatic brain injury diagnosis in an emergency department: protocol for a retrospective cohort study by Ian D Cameron, Ilaria Pozzato, Ashley Craig, Bamini Gopinath, Mark Gillett, Annette Kifley, Kim Van Vu, Susanne Meares, Anthony Liang

“…This project will advance existing research findings by estimating the occurrence of mTBI among those attending an ED and quantifying the accuracy of mTBI diagnoses recorded by ED staff through a comprehensive audit of ED records.Methods and analysis Retrospective chart reviews (between June 2015 and June 2016) of electronic clinical records from an ED in Sydney (New South Wales, Australia) will be conducted. …”
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Nicotine dependence is associated with an increased risk of developing chronic, non-communicable inflammatory disease: a large-scale retrospective cohort study by Khalaf Kridin, Khalaf Kridin, Khalaf Kridin, Cristian Papara, Katja Bieber, David A. De Luca, Jan Philipp Klein, Marlene A. Ludwig, Philip Curman, Philip Curman, Philip Curman, Philip Curman, Artem Vorobyev, Astrid Dempfle, Ralf J. Ludwig

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