Quantile Continuous Treatment Effects

2017 ◽  
Author(s):  
Javier Alejo ◽  
Antonio F. Galvao ◽  
Gabriel Montes-Rojas
Keyword(s):  
Treatment Effects ◽  
Continuous Treatment

A practical generalized propensity-score estimator for quantile continuous treatment effects

2020 ◽  
Vol 20 (2) ◽  
pp. 276-296
Author(s):  
Javier Alejo ◽  
Antonio F. Galvao ◽  
Gabriel Montes-Rojas
Keyword(s):  
Propensity Score ◽  
Social Security ◽  
Statistical Inference ◽  
Treatment Effects ◽  
Cox Model ◽  
Continuous Treatment ◽  
Empirical Results ◽  
Default Model ◽  
Labor Earnings ◽  
Generalized Propensity Score

In this article, we present a new command, qcte, that implements several methods for estimation and inference for quantile treatment-effects models with a continuous treatment. We propose a semiparametric two-step estimator, where the first step is based on a flexible Box–Cox model, as the default model of the command. We develop practical statistical inference procedures using bootstrap. We implement some simulations to show that the proposed methods perform well. Finally, we apply qcte to a survey of Massachusetts lottery winners to estimate the unconditional quantile effects of the prize amount, as a proxy of nonlabor income changes, on subsequent labor earnings from U.S. Social Security records. The empirical results reveal strong heterogeneity across unconditional quantiles.

scholarly journals A New Framework for Estimation of Unconditional Quantile Treatment Effects: The Residualized Quantile Regression (RQR) Model

2021 ◽  
Author(s):  
Nicolai T. Borgen ◽  
Andreas Haupt ◽  
Øyvind N. Wiborg
Keyword(s):  
Quantile Regression ◽  
Regression Model ◽  
Fixed Effects ◽  
Treatment Effects ◽  
Continuous Treatment ◽  
High Dimensional ◽  
Treatment Variable ◽  
Quantile Regression Model ◽  
Quantile Treatment Effects ◽  
New Framework

The identification of unconditional quantile treatment effects (QTE) has become increasingly popular within social sciences. However, current methods to identify unconditional QTEs of continuous treatment variables are incomplete. Contrary to popular belief, the unconditional quantile regression model introduced by Firpo, Fortin, and Lemieux (2009) does not identify QTE, while the propensity score framework of Firpo (2007) allows for only a binary treatment variable, and the generalized quantile regression model of Powell (2020) is unfeasible with high-dimensional fixed effects. This paper introduces a two-step approach to estimate unconditional QTEs where the treatment variable is first regressed on the control variables followed by a quantile regression of the outcome on the residualized treatment variable. Unlike much of the literature on quantile regression, this two-step residualized quantile regression framework is easy to understand, computationally fast, and can include high-dimensional fixed effects.

Quantile continuous treatment effects

2018 ◽  
Vol 8 ◽  
pp. 13-36 ◽  
Author(s):  
Javier Alejo ◽  
Antonio F. Galvao ◽  
Gabriel Montes-Rojas
Keyword(s):  
Treatment Effects ◽  
Continuous Treatment

A Phonomotor Approach to Apraxia of Speech Treatment

2020 ◽  
Vol 29 (4) ◽  
pp. 2109-2130
Author(s):  
Lauren Bislick
Keyword(s):  
Phase I ◽  
Treatment Effects ◽  
Single Case ◽  
Motor Planning ◽  
The Other ◽  
Multimodal Approach ◽  
Apraxia Of Speech ◽  
Duration Of Treatment ◽  
Treatment Gains ◽  
Future Work

Purpose This study continued Phase I investigation of a modified Phonomotor Treatment (PMT) Program on motor planning in two individuals with apraxia of speech (AOS) and aphasia and, with support from prior work, refined Phase I methodology for treatment intensity and duration, a measure of communicative participation, and the use of effect size benchmarks specific to AOS. Method A single-case experimental design with multiple baselines across behaviors and participants was used to examine acquisition, generalization, and maintenance of treatment effects 8–10 weeks posttreatment. Treatment was distributed 3 days a week, and duration of treatment was specific to each participant (criterion based). Experimental stimuli consisted of target sounds or clusters embedded nonwords and real words, specific to each participants' deficit. Results Findings show improved repetition accuracy for targets in trained nonwords, generalization to targets in untrained nonwords and real words, and maintenance of treatment effects at 10 weeks posttreatment for one participant and more variable outcomes for the other participant. Conclusions Results indicate that a modified version of PMT can promote generalization and maintenance of treatment gains for trained speech targets via a multimodal approach emphasizing repeated exposure and practice. While these results are promising, the frequent co-occurrence of AOS and aphasia warrants a treatment that addresses both motor planning and linguistic deficits. Thus, the application of traditional PMT with participant-specific modifications for AOS embedded into the treatment program may be a more effective approach. Future work will continue to examine and maximize improvements in motor planning, while also treating anomia in aphasia.

Management of symptomatic GERD with omeprazole 10 and 20 mg: Comparison of a continuous treatment and an intermittent treatment

2001 ◽  
Vol 120 (5) ◽  
pp. A432-A433
Author(s):  
M FRANCE ◽  
T HELBERT ◽  
J JACQUES ◽  
J FRANCOISBERGMAN ◽  
A CAEKAERT ◽  
...  
Keyword(s):  
Continuous Treatment ◽  
Intermittent Treatment ◽  
Symptomatic Gerd
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