Results 81 to 90 of about 218,072 (208)

Divide and Privatize : Firms Break-up and Performance [PDF]

open access: yes
We analyze the long-term effects of divesture and ownership change on corporate per-formance. We employ a unique data set for a large number of Czech firms spanning the period 1996–2005.
Evžen Kočenda, Jan Hanousek
core  

Influence of initial misdiagnosis on mortality in patients with bacteraemia: propensity score matching and propensity score weighting analyses

open access: yesBMC Infectious Diseases
Background The diagnostic process is a key element of medicine but it is complex and prone to errors. Infectious diseases are one of the three categories of diseases in which diagnostic errors can be most harmful to patients.
Anna M. Eikenboom   +3 more
doaj   +1 more source

A comparison of two methods of estimating propensity scores after multiple imputation

open access: yes
In many observational studies, analysts estimate treatment effects using propensity scores, e.g. by matching or sub-classifying on the scores. When some values of the covariates are missing, analysts can use multiple imputation to fill in the missing ...
Mitra, R., Reiter, J.P.
core   +1 more source

Propensity Score Matching [PDF]

open access: yes, 2014
Ben Grunwald, John M. MacDonald
openaire   +2 more sources

A Case Study About Why It Can Be Difficult To Test Whether Propensity Score Analysis Works in Field Experiments

open access: yesJournal of Methods and Measurement in the Social Sciences, 2012
Peikes, Moreno and Orzol (2008) sensibly caution researchers that propensity score analysis may not lead to valid causal inference in field applications.
Thomas D. Cook   +2 more
doaj  

School facilities and student achievements: evidence from the Timss [PDF]

open access: yes
This paper studies the link between school facilities and student achievements in eight countries using data from the TIMSS 2003 database. OLS and propensity score matching is used to control for observable characteristics.
Arnt Ove Hopland
core  

Imported Inputs and Skill Upgrading [PDF]

open access: yes
This paper studies the effect of imported inputs on relative skilled labor demand. To this purpose, it uses firm-level data for 27 transition countries and propensity score matching techniques.
Rosario Crinò
core  

Employed Unemployed? On Shadow Employment During Transition [PDF]

open access: yes
Unregistered employment poses two types of challenges to the researchers: (i) reliably evaluating the wage differential between formally and informally employed and (ii) accounting for the push and pull factors in general and the effects of business ...
Joanna Tyrowicz, Stanisław Cichocki
core  

On the inefficiency of propensity score matching [PDF]

open access: yes, 2018
Propensity score matching is now widely used in empirical applications for estimating treatment effects. Propensity score matching (PSM) is preferred to matching on X because of the lower dimension of the estimation problem.
Frölich, Markus
core  

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