Search Results - "Fortin, Stephen"

Indirect covariate balance and residual confounding: An applied comparison of propensity score matching and cardinality matching by Fortin, Stephen P., Schuemie, Martijn

“…Purpose Propensity score matching (PSM) is subject to limitations associated with limited degrees of freedom and covariate overlap. Cardinality matching (CM),…”
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Correction to: Adaptation and validation of a coding algorithm for the Charlson Comorbidity Index in administrative claims data using the SNOMED CT standardized vocabulary by Fortin, Stephen P, Reps, Jenna, Ryan, Patrick

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Applied comparison of large‐scale propensity score matching and cardinality matching for causal inference in observational research by Fortin, Stephen P., Johnston, Stephen S, Schuemie, Martijn J

“…Abstract Background Cardinality matching (CM), a novel matching technique, finds the largest matched sample meeting prespecified balance criteria thereby…”
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Adaptation and validation of a coding algorithm for the Charlson Comorbidity Index in administrative claims data using the SNOMED CT standardized vocabulary by Fortin, Stephen P, Reps, Jenna, Ryan, Patrick

“…The Charlson comorbidity index (CCI), the most ubiquitous comorbid risk score, predicts one-year mortality among hospitalized patients and provides a single…”
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Comparison of safety and utilization outcomes in inpatient versus outpatient laparoscopic sleeve gastrectomy: a retrospective, cohort study by Fortin, Stephen P., Kalsekar, Iftekhar, Johnston, Stephen, Akincigil, Ayse

“…Laparoscopic sleeve gastrectomy (LSG) is the most common type of bariatric surgery performed in the United States and may be performed on an outpatient basis…”
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Correction to: Applied comparison of large-scale propensity score matching and cardinality matching for causal inference in observational research by Fortin, Stephen P., Johnston, Stephen S., Schuemie, Martijn J.

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Economic and clinical outcomes of spinal fusion surgeries with skin closure through skin staples plus waterproof wound dressings versus 2-octyl cyanoacrylate plus polymer mesh tape by Johnston, Stephen S., Fortin, Stephen P., Pracyk, John B., Tommaselli, Giovanni A., Elangovanraaj, Nivesh, Chen, Brian P.

“…•Retrospective, multi-hospital database study using propensity score matching•2-octyl cyanoacrylate plus polymer mesh tape (2OPMT) was compared with skin…”
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Baseline risk characterization of early versus later adopters of long‐acting paliperidone palmitate formulations by Fife, Daniel, Fortin, Stephen, Qiu, Hong, Yamazaki, Michiyo, Najarian, Dean, Voss, Erica A

“…Early Post‐Marketing Phase Vigilance (EPPV) is a unique system that encourages reporting of serious adverse reactions for medications newly introduced to…”
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Vaccine Safety Surveillance Using Routinely Collected Healthcare Data—An Empirical Evaluation of Epidemiological Designs by Schuemie, Martijn J., Arshad, Faaizah, Pratt, Nicole, Nyberg, Fredrik, Alshammari, Thamir M, Hripcsak, George, Ryan, Patrick, Prieto-Alhambra, Daniel, Lai, Lana Y. H., Li, Xintong, Fortin, Stephen, Minty, Evan, Suchard, Marc A.

“…Background: Routinely collected healthcare data such as administrative claims and electronic health records (EHR) can complement clinical trials and…”
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Corrigendum: Vaccine safety surveillance using routinely collected healthcare data-An empirical evaluation of epidemiological designs by Schuemie, Martijn J, Arshad, Faaizah, Pratt, Nicole, Nyberg, Fredrik, Alshammari, Thamir M, Hripcsak, George, Ryan, Patrick, Prieto-Alhambra, Daniel, Lai, Lana Y H, Li, Xintong, Fortin, Stephen, Minty, Evan, Suchard, Marc A

“…[This corrects the article DOI: 10.3389/fphar.2022.893484.]…”
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Incidence of mental health diagnoses during the COVID-19 pandemic: a multinational network study by Chai, Yi, Man, Kenneth K. C., Luo, Hao, Torre, Carmen Olga, Wing, Yun Kwok, Hayes, Joseph F., Osborn, David P. J., Chang, Wing Chung, Lin, Xiaoyu, Yin, Can, Chan, Esther W., Lam, Ivan C. H., Fortin, Stephen, Kern, David M., Lee, Dong Yun, Park, Rae Woong, Jang, Jae-Won, Li, Jing, Seager, Sarah, Lau, Wallis C. Y., Wong, Ian C. K.

“…Population-wide restrictions during the COVID-19 pandemic may create barriers to mental health diagnosis. This study aims to examine changes in the number of…”
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Comparison of Clinical Outcomes of Gripping Surface Technology Staple Reloads versus Standard Staple Reloads Used with Manual Linear Surgical Staplers by Fortin, Stephen P, Petraiuolo, William, Cafri, Guy, Scapini, Gustavo, Agarwal, Pratyush, Chakke, Divya, Johnston, Stephen, Johnson, Barbara H, Coplan, Paul M, Zhang, Shumin

“…Linear surgical staplers reduce rates of surgical adverse events (bleeding, leaks, infections) compared to manual sutures thereby reducing patient risks,…”
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Comparative Effectiveness of Famotidine in Hospitalized COVID-19 Patients by Shoaibi, Azza, Fortin, Stephen Patrick, Weinstein, Rachel, Berlin, Jesse A., Ryan, Patrick

“…Famotidine has been posited as a potential treatment for coronavirus disease 2019 (COVID-19). We compared the incidence of COVID-19 outcomes (i.e., death and…”
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Minimizing confounding in comparative observational studies with time-to-event outcomes: An extensive comparison of covariate balancing methods using Monte Carlo simulation by Cafri, Guy, Fortin, Stephen, Austin, Peter C

“…Observational studies are frequently used in clinical research to estimate the effects of treatments or exposures on outcomes. To reduce the effects of…”
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Performance characteristics of code‐based algorithms to identify urinary tract infections in large United States administrative claims databases by Fortin, Stephen P., Swerdel, Joel, Sarnecki, Michal, Doua, Joachim, Colasurdo, Jamie, Geurtsen, Jeroen

“…Background In real‐world evidence research, reliability of coding in healthcare databases dictates the accuracy of code‐based algorithms in identifying…”
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Rates of Antipsychotic Drug Prescribing Among People Living With Dementia During the COVID-19 Pandemic by Luo, Hao, Lau, Wallis C Y, Chai, Yi, Torre, Carmen Olga, Howard, Robert, Liu, Kathy Y, Lin, Xiaoyu, Yin, Can, Fortin, Stephen, Kern, David M, Lee, Dong Yun, Park, Rae Woong, Jang, Jae-Won, Chui, Celine S L, Li, Jing, Reich, Christian, Man, Kenneth K C, Wong, Ian C K

“…Concerns have been raised that the use of antipsychotic medication for people living with dementia might have increased during the COVID-19 pandemic. To…”
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Thirty-Day Outcomes of Children and Adolescents With COVID-19: An International Experience by Duarte-Salles, Talita, Vizcaya, David, Pistillo, Andrea, Casajust, Paula, Sena, Anthony G., Lai, Lana Yin Hui, Prats-Uribe, Albert, Ahmed, Waheed-Ul-Rahman, Alshammari, Thamir M., Alghoul, Heba, Alser, Osaid, Burn, Edward, You, Seng Chan, Areia, Carlos, Blacketer, Clair, DuVall, Scott, Falconer, Thomas, Fernandez-Bertolin, Sergio, Fortin, Stephen, Golozar, Asieh, Gong, Mengchun, Tan, Eng Hooi, Huser, Vojtech, Iveli, Pablo, Morales, Daniel R., Nyberg, Fredrik, Posada, Jose D., Recalde, Martina, Roel, Elena, Schilling, Lisa M., Shah, Nigam H., Shah, Karishma, Suchard, Marc A., Zhang, Lin, Zhang, Ying, Williams, Andrew E., Reich, Christian G., Hripcsak, George, Rijnbeek, Peter, Ryan, Patrick, Kostka, Kristin, Prieto-Alhambra, Daniel

“…OBJECTIVES To characterize the demographics, comorbidities, symptoms, in-hospital treatments, and health outcomes among children and adolescents diagnosed or…”
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Development and performance characteristics of novel code‐based algorithms to identify invasive Escherichia coli disease by Fortin, Stephen P., Hernandez Pastor, Luis, Doua, Joachim, Sarnecki, Michal, Swerdel, Joel, Colasurdo, Jamie, Geurtsen, Jeroen

“…Purpose Evaluation of novel code‐based algorithms to identify invasive Escherichia coli disease (IED) among patients in healthcare databases. Methods Inpatient…”
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Enhancement and external validation of algorithms using diagnosis codes to identify invasive Escherichia coli disease by Hernandez-Pastor, Luis, Geurtsen, Jeroen, El Khoury, Antoine C., Fortin, Stephen P., Gauthier-Loiselle, Marjolaine, Yu, Louise H., Cloutier, Martin

“…OBJECTIVETo assess the predictive accuracy of code-based algorithms for identifying invasive Escherichia coli (E. coli) disease (IED) among inpatient…”
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Reproducible variability: assessing investigator discordance across 9 research teams attempting to reproduce the same observational study by Ostropolets, Anna, Albogami, Yasser, Conover, Mitchell, Banda, Juan M, Baumgartner, William A, Blacketer, Clair, Desai, Priyamvada, DuVall, Scott L, Fortin, Stephen, Gilbert, James P, Golozar, Asieh, Ide, Joshua, Kanter, Andrew S, Kern, David M, Kim, Chungsoo, Lai, Lana Y H, Li, Chenyu, Liu, Feifan, Lynch, Kristine E, Minty, Evan, Neves, Maria Inês, Ng, Ding Quan, Obene, Tontel, Pera, Victor, Pratt, Nicole, Rao, Gowtham, Rappoport, Nadav, Reinecke, Ines, Saroufim, Paola, Shoaibi, Azza, Simon, Katherine, Suchard, Marc A, Swerdel, Joel N, Voss, Erica A, Weaver, James, Zhang, Linying, Hripcsak, George, Ryan, Patrick B

“…Abstract Objective Observational studies can impact patient care but must be robust and reproducible. Nonreproducibility is primarily caused by unclear…”
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