Results 31 to 40 of about 1,861,153 (306)

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

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +1 more source

Association Between Individualized Education for Kidney Replacement Therapy Modality Selection and Peritoneal Dialysis Initiation: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) is an established home‐based kidney replacement therapy (KRT), but its uptake remains low in Japan. We evaluated whether individualized education in a dedicated outpatient clinic was associated with the initiation of PD.
Yasuko Ito, Ryuichi Yoshimura, Takaki Yamauchi, Yuta Funakoshi, Hirotaka Sonoda, Seiji Kobayashi, Hiroyuki Terawaki, Takafumi Ito   +7 more
wiley   +1 more source

Evidências da relação entre a frequência no ensino infantil e o desempenho dos alunos do ensino fundamental público no Brasil

Revista Brasileira de Estudos de População
Este artigo tem por objetivo estimar o impacto da frequência ao ensino infantil na proficiência dos alunos do ensino fundamental público no Brasil, utilizando como proxy as notas dos alunos em português e matemática disponíveis na Prova Brasil 2011.
Walcir Soares da Silva Junior, Flávio de Oliveira Gonçalves   +1 more
doaj   +1 more source

Covariate Balancing Propensity Score [PDF]

Journal of the Royal Statistical Society Series B: Statistical Methodology, 2013
SummaryThe propensity score plays a central role in a variety of causal inference settings. In particular, matching and weighting methods based on the estimated propensity score have become increasingly common in the analysis of observational data. Despite their popularity and theoretical appeal, the main practical difficulty of these methods is that ...
Imai, Kosuke, Ratkovic, Marc
openaire   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Adaptive Experimental Design Using the Propensity Score [PDF]

Many social experiments are run in multiple waves, or are replications of earlier social experiments. In principle, the sampling design can be modified in later stages or replications to allow for more efficient estimation of causal effects.
Keisuke Hirano, Jinyong Hahn, Dean Karlan   +2 more
core   +2 more sources