Results 51 to 60 of about 3,962,876 (306)

The Propensity Score: A Means to an End [PDF]

SSRN Electronic Journal, 2001
Propensity score matching is a prominent strategy to reduce imbalance in observational studies. However, if imbalance is considerable and the control reservoir is small, either one has to match one control to several treated units or, alternatively, discard many treated persons.
Augurzky, Boris, Schmidt, Christoph M.
openaire   +2 more sources

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási, Bernadett Borbála Huszti, Gábor Barna, Marko Kavcic, Janez Jazbec, Lennart Lenk, Vera Münch, Sophia Polychronopoulou, Ágnes Márk, Maria Thastrup, Lüder H. Meyer, Kjeld Schmiegelow, Cornelia Eckert, Christina Halsey, Dániel J. Erdélyi   +14 more
wiley   +1 more source

Research on the Impact of Establishing Health Records Based on Propensity Score Matching Method on the Medical Behavior of Elderly People [PDF]

Zhongguo quanke yixue
Background The problem of population aging in China is becoming increasingly prominent, and the health of the elderly has become an important issue. Objective To analyse the current situation of establishing health records for the elderly and explore the
TANG Xinyi, HU Xinyu, LIU Shanshan, ZHANG Yimin
doaj   +1 more source

Pulsed electric field, cryoballoon, and radiofrequency for paroxysmal atrial fibrillation ablation: a propensity score-matched comparison

Europace
Aims Pulsed field ablation (PFA) has emerged as a novel, non-thermal energy source to selectively ablate cardiac tissue. We describe a multicentre experience on pulmonary vein isolation (PVI) via the pentaspline Farapulse™ PFA system vs.
D. D. Della Rocca, Lorenzo Marcon, M. Magnocavallo, Roberto Mené, L. Pannone, S. Mohanty, V. Sousonis, A. Sorgente, A. Almorad, A. Bisignani, A. Głowniak, A. Del Monte, G. Bala, M. Polselli, S. Mouram, V. L. La Fazia, Erwin Ströker, C. Gianni, S. Zeriouh, S. Bianchi, J. Sieira, S. Combes, A. Sarkozy, P. Rossi, S. Boveda, A. Natale, C. de Asmundis, Gian-Battista Cheirchia   +27 more
semanticscholar   +1 more source

Severe clinical outcomes of COVID-19 associated with proton pump inhibitors: a nationwide cohort study with propensity score matching

Gut, 2020
Objective The adverse effects of proton pump inhibitors (PPIs) have been documented for pneumonia; however, there is no consensus regarding whether the use of PPIs might be harmful regarding the risk of severe acute respiratory syndrome coronavirus 2 ...
Seung Won Lee, E. K. Ha, A. Yeniova, S. Moon, So Young Kim, Hyun Yong Koh, Jee Myung Yang, S. Jeong, S. Moon, J. Cho, I. Yoo, D. Yon   +11 more
semanticscholar   +1 more source

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
wiley   +1 more source

An evaluation of the US African Growth and Opportunity Act (AGOA) trade arrangement with Sub-Saharan African countries [PDF]

PSL Quarterly Review, 2018
This paper evaluates the impact of the US African Growth and Opportunity Act (AGOA) trade arrangement on the growth of exports from Sub-Saharan African (SSA) countries. Using several variants of propensity score matching techniques, results show that the
Busani Moyo, Mamello Nchake, Blessing Chiripanhura   +2 more
doaj   +1 more source

The effects of smoking on metabolic syndrome and its components using causal methods in the Iranian Population

International Journal of Preventive Medicine, 2021
Background: The aim of this study was to estimate the effect of smoking on metabolic syndrome (MS) and its components applying inverse probability-of-treatment weighting (IPTW) and propensity score (PS) matching. Methods: Using data from Tehran Lipid and
Farzad Khodamoradi, Maryam Nazemipour, Nasrin Mansournia, Kamran Yazdani, Davood Khalili, Mohammad Ali Mansournia   +5 more
doaj   +1 more source

Weighting Regressions by Propensity Scores [PDF]

Evaluation Review, 2008
Regressions can be weighted by propensity scores in order to reduce bias. However, weighting is likely to increase random error in the estimates, and to bias the estimated standard errors downward, even when selection mechanisms are well understood. Moreover, in some cases, weighting will increase the bias in estimated causal parameters.
Freedman, David A, Berk, Richard A
openaire   +3 more sources

Famotidine Use Is Associated With Improved Clinical Outcomes in Hospitalized COVID-19 Patients: A Propensity Score Matched Retrospective Cohort Study

Gastroenterology, 2020
Background and Aims: No medications are proven to improve clinical outcomes in COVID-19. Famotidine is commonly used for gastric acid suppression but has recently gained attention as an antiviral that may inhibit SARS-CoV-2 replication. This study tested
D. Freedberg, J. Conigliaro, T. Wang, K. Tracey, M. Callahan, J. Abrams, Magdalena E. Sobieszczyk, D. Markowitz, Aakriti Gupta, M. O’Donnell, Jianhua Li, D. Tuveson, Zhezhen Jin, William C. Turner, D. Landry   +14 more
semanticscholar   +1 more source