Results 41 to 50 of about 3,851,696 (287)

Subgroup balancing propensity score [PDF]

Statistical Methods in Medical Research, 2019
This paper concerns estimation of subgroup treatment effects with observational data. Existing propensity score methods are mostly developed for estimating overall treatment effect. Although the true propensity scores balance covariates in any subpopulations, the estimated propensity scores may result in severe imbalance in subgroup samples.
Jing Dong, Junni L Zhang, Shuxi Zeng, Fan Li   +3 more
openaire   +2 more sources

RISKS MANAGEMENT. A PROPENSITY SCORE APPLICATION [PDF]

Annals of the University of Oradea: Economic Science, 2008
Risk management is relatively unexplored in Romania. Although Romanian specialists dwell on theoretical aspects such as the risks classification and the important distinction between risks and uncertainty the practical relevance of the matter is outside ...
Constangioara Alexandru
doaj  

Propensity score weighting under limited overlap and model misspecification [PDF]

Statistical Methods in Medical Research, 2020
Propensity score weighting methods are often used in non-randomized studies to adjust for confounding and assess treatment effects. The most popular among them, the inverse probability weighting, assigns weights that are proportional to the inverse of ...
Yunji Zhou, Roland A. Matsouaka, L. Thomas   +2 more
semanticscholar   +1 more source

Perbandingan Propensity Score Stratification dan Propensity Score Matching dengan Pendekatan Multivariate Adaptive Regression Spline

Jambura Journal of Mathematics
Research on complications of Diabetes Mellitus (DM) is multifactorial, where the risk factors causing DM complications are interrelated, leading to confounding bias, which results in inaccurate research findings. Confounding bias can be reduced using the
Ingka Rizkyani Akolo, Setia Ningsih, Hendra Dukalang   +2 more
doaj   +1 more source

Health care inequality under different medical insurance schemes in a socioeconomically underdeveloped region of China: a propensity score matching analysis

BMC Public Health, 2019
Background Since economic inequality is often accompanied by health inequalities, health care inequalities are increasingly becoming a hot issue on a global scale. As a developing country, China is still facing the same problems as other countries in the
Wei Xian, Xueying Xu, Junling Li, Jinbin Sun, Hezi Fu, Shaoning Wu, Hongbo Liu   +6 more
doaj   +1 more source

Propensity scores in the presence of effect modification: A case study using the comparison of mortality on hemodialysis versus peritoneal dialysis

Emerging Themes in Epidemiology, 2010
Purpose To control for confounding bias from non-random treatment assignment in observational data, both traditional multivariable models and more recently propensity score approaches have been applied.
Hunink MG Myriam, Wong John B, Liem Ylian S, de Charro Frank, Winkelmayer Wolfgang C   +4 more
doaj   +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

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, M. 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

Molecular Methods for Rare Hemoglobinopathy Cases: First Brazilian Report of Pediatric Siblings with Hb O‐Arab and Alpha‐Thalassemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Hemoglobinopathies are prevalent globally; diagnosis is complex in high genetic admixture populations like Brazil. We report, in two pediatric siblings, the first documented cases in Brazil of heterozygosity for hemoglobin (Hb) O‐Arab with coinheritance of α‐thalassemia (αα/−α4.2; −α3.7/−α4.2), resulting in microcytic and hypochromic anemia ...
Elisângela de Souza Miranda Muynarsk, Amanda Cristina Meneguetti Berti, Bárbara Braga Vieira Marques, Victoria Simões Bernardo, Flaviene Felix Torres, Ingrid Souza Dias, Vanessa da Silveira Ramos de Castro, Gabriela Alves Bernardino, Danilo Grünig Humberto da Silva, Edis Belini‐Júnior   +9 more
wiley   +1 more source