Results 51 to 60 of about 3,205,740 (360)

Influence of the Fukushima Daiichi Nuclear Power Plant Accident on the Use of Computed Tomography in Children With Mild Head Injuries

Journal of Epidemiology, 2020
Background: Computed tomography (CT) is commonly used in children with mild head injuries. People in Japan are concerned about radiation exposure and radiation-induced cancer because of the Fukushima Daiichi Nuclear Power Plant accident on March 11, 2011.
Shotaro Aso, Hiroki Matsui, Hideo Yasunaga   +2 more
doaj   +1 more source

Evaluation of occupational health interventions using a randomized controlled trial: challenges and alternative research designs

Scandinavian Journal of Work, Environment & Health, 2015
Occupational health researchers regularly conduct evaluative intervention research for which a randomized controlled trial (RCT) may not be the most appropriate design (eg, effects of policy measures, organizational interventions on work schedules). This
Roosmarijn MC Schelvis, Karen M Oude Hengel, Alex Burdorf, Birgitte M Blatter, Jorien E Strijk, Allard J van der Beek   +5 more
doaj   +1 more source

Regression discontinuity design studies: a guide for health researchers

British medical journal
As randomized controlled trials are not always feasible, quasi-experimental methods, such as regression discontinuity design, can expand the scope of clinical investigations aimed at causal inference in observational settings.
Sebastian Calonico, Neal Jawadekar, K. Kezios, A. Zeki Al Hazzouri   +3 more
semanticscholar   +1 more source

Impact of the Tennessee Voluntary Prekindergarten Program on Children’s Literacy, Language, and Mathematics Skills: Results From a Regression-Discontinuity Design

AERA Open, 2021
The Tennessee Voluntary Pre-K Program (TN-VPK) is statewide full-day program that gives priority to children from low-income families. A regression-discontinuity design with a statewide probability sample of 155 TN-VPK classrooms and 5,189 children ...
Georgine M. Pion, Mark W. Lipsey
doaj   +1 more source

Regression Discontinuity in Time: Considerations for Empirical Applications

Annual Review of Resource Economics, 2018
Recent empirical work in several economic fields, particularly environmental and energy economics, has adapted the regression discontinuity (RD) framework to applications where time is the running variable and treatment begins at a particular threshold ...
Catherine Hausman, D. Rapson
semanticscholar   +1 more source

Randomization Inference in the Regression Discontinuity Design: An Application to Party Advantages in the U.S. Senate

Journal of Causal Inference, 2015
In the Regression Discontinuity (RD) design, units are assigned a treatment based on whether their value of an observed covariate is above or below a fixed cutoff.
Cattaneo Matias D., Frandsen Brigham R., Titiunik Rocío   +2 more
doaj   +1 more source

Relationship of Pure Tone Audiometry and Ossicular Discontinuity in Chronic Suppurative Otitis Media

Philippine Journal of Otolaryngology Head and Neck Surgery, 2006
Background: Pure tone audiometry is routinely used to determine conductive and sensorineural hearing status. Ossicular discontinuity is usually assessed intra-operatively.
Ryner Jose C. Carrillo, Nathaniel W. Yang, Generoso T. Abes   +2 more
doaj   +1 more source

Optimized Regression Discontinuity Designs [PDF]

The Review of Economics and Statistics, 2019
Review of Economics and Statistics ...
Imbens, Guido, Wager, Stefan
openaire   +2 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Effect of Free Trade Area Policy on Innovation Capability in the Service Industry [PDF]

Amfiteatru Economic
China has gradually established pilot free trade zones and implemented certain specific policies for its enterprises to deepen the economic system reform and expand the degree of market opening to the outside world.
Qi Dong , Yuriy Bilan
doaj   +1 more source