Results 31 to 40 of about 18,306,499 (332)

Misclassification in Difference-in-Differences Models

open access: yesSSRN Electronic Journal, 2022
The difference-in-differences (DID) design is one of the most popular methods used in empirical economics research. However, there is almost no work examining what the DID method identifies in the presence of a misclassified treatment variable. This paper studies the identification of treatment effects in DID designs when the treatment is misclassified.
Denteh, Augustine, Kédagni, Désiré
openaire   +2 more sources

Assessing Impacts of New Subway Stations on Urban Thefts in the Surrounding Areas

open access: yesISPRS International Journal of Geo-Information, 2021
Whether newly implemented public transit stations influence the nearby crime pattern has been debated for years. In ZG City, China, 2 new subway lines and 20 new stations were implemented in 2017.
Chong Xu   +4 more
doaj   +1 more source

Balancing, Regression, Difference-in-Differences and Synthetic Control Methods: A Synthesis [PDF]

open access: yes, 2016
In a seminal paper Abadie et al (2010) develop the synthetic control procedure for estimating the effect of a treatment, in the presence of a single treated unit and a number of control units, with pre-treatment outcomes observed for all units.
Nikolay Doudchenko, G. Imbens
semanticscholar   +1 more source

Confounding and regression adjustment in difference‐in‐differences studies [PDF]

open access: yesHealth Services Research, 2019
Objective To define confounding bias in difference‐in‐difference studies and compare regression‐ and matching‐based estimators designed to correct bias due to observed confounders.
B. Zeldow, Laura A. Hatfield
semanticscholar   +1 more source

Estimating cultural heritage sites effect on food and accommodations with synthetic controls

open access: yesAnnals of Tourism Research Empirical Insights, 2022
The United Nations Educational, Scientific and Cultural Organization (UNESCO) has developed a list of over 1000 cultural and world heritage sites. We seek to estimate a casual impact on food and accommodations industries that two of these sites influence
Douglas Eric Belleville, Jr   +1 more
doaj   +1 more source

The Impact of Expressway Development on Industrial Structure in Rugged Terrain: The Case of Sichuan Province, China

open access: yesLand, 2023
The expressway is an important pillar of economic development and has a significant impact on the transformation of regional industrial structure.
Min Su   +3 more
doaj   +1 more source

The Dependent Coverage Provision Is Good for Mothers, Good for Children, and Good for Taxpayers [PDF]

open access: yes, 2018
Importance The effect of the Affordable Care Act (ACA) dependent coverage provision on pregnancy-related health care and health outcomes is unknown. Objective To determine whether the dependent coverage provision was associated with changes in payment
Carroll, Aaron E., Cheng, Erika R.
core   +2 more sources

Local Health Units in Portugal: The Influence of Chronic Conditions on Inpatient Readmissions

open access: yesPortuguese Journal of Public Health, 2020
Background: In Portugal, a public policy established the Local Health Units (LHUs), merging primary and hospital care providers. LHUs are expected to provide better continuity and coordination of care, thus decreasing the number of unplanned readmissions
Óscar Brito Fernandes   +5 more
doaj   +1 more source

Randomization inference for difference-in-differences with few treated clusters

open access: yes, 2020
Inference using difference-in-differences with clustered data requires care. Previous research has shown that, when there are few treated clusters, t-tests based on cluster-robust variance estimators (CRVEs) severely overreject, and different variants of
J. MacKinnon, Matthew D. Webb
semanticscholar   +1 more source

Socioeconomic disparity in the association between long-term exposure to PM2.5 and mortality in 2640 Chinese counties

open access: yesEnvironment International, 2021
Background: Although the association between long-term exposure to PM2.5 and mortality has been evaluated intensively, little is known about the socioeconomic disparity in the association.
Chunlei Han   +8 more
doaj   +1 more source

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