• Documents
  • Authors
  • Tables
  • Log in
  • Sign up
  • MetaCart
  • DMCA
  • Donate

CiteSeerX logo

Advanced Search Include Citations
Advanced Search Include Citations

The central role of the propensity score in observational studies for causal e¤ects (1983)

by P Rosenbaum, D Rubin
Venue:Biometrika
Add To MetaCart

Tools

Sorted by:
Results 1 - 10 of 2,779
Next 10 →

Economic analysis of cross section and panel data

by Jeffrey M. Wooldridge
"... ..."
Abstract - Cited by 3544 (18 self) - Add to MetaCart
Abstract not found

Statistics and causal inference.

by Paul W Holland - J. Am. Statist. Assoc., , 1986
"... Problems involving causal inference have dogged at the heels of statistics since its earliest days. Correlation does not imply causation, and yet causal conclusions drawn from a carefully designed experiment are often valid. What can a statistical model say about causation? This question is address ..."
Abstract - Cited by 736 (1 self) - Add to MetaCart
Problems involving causal inference have dogged at the heels of statistics since its earliest days. Correlation does not imply causation, and yet causal conclusions drawn from a carefully designed experiment are often valid. What can a statistical model say about causation? This question is addressed by using a particular model for causal inference
(Show Context)

Citation Context

...all units, u. Hence (13) E(Y, I S = t) = T + E(Yc I S = t), (14) so TPF = T + {E(Yc I s = t) - E(Yc I s = c)}. (15) The term in braces in (15) is not 0 in general, that is, if the independence assumption is not true. It is easy to show that the stronger assumption of unit homogeneity does imply equality between T and TPF· 4.5 Causal Inference In Nonrandomized Observational Studies It is beyond the scope of this article to apply the model for causal inference to nonrandomized studies. This has been done extensively, and the reader is referred to Rubin (1974, 1977, 1978), Rosenbaum (1984a,b,c), Rosenbaum and Rubin (1983a,b, 1984a,b, 198Sa,b ), and Holland and Rubin (1980, 1983). An important emphasis in these papers is on the ways that pre-exposure variables can be used to replace the independence assumption with less stringent conditional independence assumptions that are useful in observational studies. Rosenbaum and Rubin referred to one such assumption as "strong ignorability." 5. COMMENTS ON SELECTED PHILOSOPHERS So much has been written about causality by philosophers that it is impossible to give an adequate coverage of the ideas that they have expressed in a short article. This section views some of ...

Propensity Score Matching Methods For Non-Experimental Causal Studies

by Rajeev H. Dehejia, Sadek Wahba , 2002
"... This paper considers causal inference and sample selection bias in non-experimental settings in which: (i) few units in the non-experimental comparison group are comparable to the treatment units; and (ii) selecting a subset of comparison units similar to the treatment units is difficult because uni ..."
Abstract - Cited by 714 (3 self) - Add to MetaCart
This paper considers causal inference and sample selection bias in non-experimental settings in which: (i) few units in the non-experimental comparison group are comparable to the treatment units; and (ii) selecting a subset of comparison units similar to the treatment units is difficult because units must be compared across a high-dimensional set of pretreatment characteristics. We discuss the use of propensity score matching methods, and implement them using data from the NSW experiment. Following Lalonde (1986), we pair the experimental treated units with non-experimental comparison units from the CPS and PSID, and compare the estimates of the treatment effect obtained using our methods to the benchmark results from the experiment. For both comparison groups, we show that the methods succeed in focusing attention on the small subset of the comparison units comparable to the treated units and, hence, in alleviating the bias due to systematic differences between the treated and comparison units.

The dynamics of productivity in the telecommunications equipment industry

by G. Steven Olley, Ariel Pakes , 1996
"... ..."
Abstract - Cited by 593 (2 self) - Add to MetaCart
Abstract not found

Matching as an Econometric Evaluation Estimator.

by James J Heckman , Hidehiko Ichimura , Petra Todd - Review of Economic Studies. , 1998
"... ..."
Abstract - Cited by 426 (11 self) - Add to MetaCart
Abstract not found

Efficient Estimation of Average Treatment Effects Using the Estimated Propensity Score

by Keisuke Hirano , Guido W. Imbens , Geert Ridder , 2000
"... We are interested in estimating the average effect of a binary treatment on a scalar outcome. If assignment to the treatment is independent of the potential outcomes given pretreatment variables, biases associated with simple treatment-control average comparisons can be removed by adjusting for diff ..."
Abstract - Cited by 416 (35 self) - Add to MetaCart
We are interested in estimating the average effect of a binary treatment on a scalar outcome. If assignment to the treatment is independent of the potential outcomes given pretreatment variables, biases associated with simple treatment-control average comparisons can be removed by adjusting for differences in the pre-treatmentvariables. Rosenbaum and Rubin (1983, 1984) show that adjusting solely for differences between treated and control units in a scalar function of the pre-treatment variables, the propensity score, also removes the entire bias associated with differences in pre-treatment variables. Thus it is possible to obtain unbiased estimates of the treatment effect without conditioning on a possibly highdimensional vector of pre-treatment variables. Although adjusting for the propensity score removes all the bias, this can come at the expense of efficiency. We show that weighting with the inverse of a nonparametric estimate of the propensity score, rather than the true propensity scor...

Field Experiments

by Glenn W. Harrison, John A. List, John Mcmillan, Colin Camerer, R. Mark Isaac, Charles Plott - Journal of Economic Literature Vol XLII , 2004
"... Experimental economists are leaving the reservation. They are recruiting subjects in the field rather than in the classroom, using field goods rather than induced valuations, and using field context rather than abstract terminology in instructions. We argue that there is something methodologically f ..."
Abstract - Cited by 411 (73 self) - Add to MetaCart
Experimental economists are leaving the reservation. They are recruiting subjects in the field rather than in the classroom, using field goods rather than induced valuations, and using field context rather than abstract terminology in instructions. We argue that there is something methodologically fundamental behind this trend. Field experiments differ from laboratory experiments in many ways. Although it is tempting to view field experiments as simply less controlled variants of laboratory experiments, we argue that to do so would be to seriously mischaracterize them. What passes for “control ” in laboratory experiments might in fact be precisely the opposite if it is artificial to the subject or context of the task. We propose six factors that can be used to determine the field context of an experiment: the nature of the subject pool, the nature of the information that the subjects bring to the task, the nature of the commodity, the nature of the task or trading rules applied, the nature

Some practical guidance for the implementation of propensity score matching

by Marco Caliendo, Sabine Kopeinig - IZA DISCUSSION PAPER , 2005
"... ..."
Abstract - Cited by 335 (7 self) - Add to MetaCart
Abstract not found
(Show Context)

Citation Context

...ate the impact within each interval by taking the mean difference in outcomes between treated and control observations. This method is also known as interval matching, blocking and subclassification (=-=Rosenbaum and Rubin, 1983-=-). Clearly, one question to be answered is how many strata should be used in empirical analysis. Cochrane and Chambers (1965) shows that five subclasses are often enough to remove 95% of the bias asso...

Matching as Nonparametric Preprocessing for Reducing Model Dependence

by Daniel E. Ho, Kosuke Imai, Gary King, Elizabeth A. Stuart - in Parametric Causal Inference,” Political Analysis , 2007
"... Although published works rarely include causal estimates from more than a few model specifications, authors usually choose the presented estimates from numerous trial runs readers never see. Given the often large variation in estimates across choices of control variables, functional forms, and other ..."
Abstract - Cited by 334 (46 self) - Add to MetaCart
Although published works rarely include causal estimates from more than a few model specifications, authors usually choose the presented estimates from numerous trial runs readers never see. Given the often large variation in estimates across choices of control variables, functional forms, and other modeling assumptions, how can researchers ensure that the few estimates presented are accurate or representative? How do readers know that publications are not merely demonstrations that it is possible to find a specification that fits the author’s favorite hypothesis? And how do we evaluate or even define statistical properties like unbiasedness or mean squared error when no unique model or estimator even exists? Matching methods, which offer the promise of causal inference with fewer assumptions, constitute one possible way forward, but crucial results in this fast-growing methodological
(Show Context)

Citation Context

...n support, see Iacus and Porro (2006). 6.4 The Propensity Score Tautology A commonly used matching procedure is to summarize all the variables in X with a single variable called the propensity score (=-=Rosenbaum and Rubin 1983-=-). The propensity score is the true probability of unit i receiving treatment, given the covariates Xi, e(Xi) 5 p(Ti 5 1|Xi). It is usually estimated via a logistic regression of Ti on a constant term...

Recent Developments in the Econometrics of Program Evaluation

by Guido W. Imbens, Jeffrey M. Wooldridge , 2008
"... ..."
Abstract - Cited by 326 (5 self) - Add to MetaCart
Abstract not found
Powered by: Apache Solr
  • About CiteSeerX
  • Submit and Index Documents
  • Privacy Policy
  • Help
  • Data
  • Source
  • Contact Us

Developed at and hosted by The College of Information Sciences and Technology

© 2007-2019 The Pennsylvania State University