Explanipedia

Why Propensity Scores Should Not Be Used for Matching Open

Gary King, Richard A. Nielsen · 2019

We show that propensity score matching (PSM), an enormously popular method of preprocessing data for causal inference, often accomplishes the opposite of its intended goal - thus increasing imbalance, inefficiency, model dependence, and bi…

archive_psnot.zip Open

Richard A. Nielsen, Gary King · 2019

Full replication archive.

Replication Data for: Why Propensity Scores Should Not Be Used for Matching Open

Richard A. Nielsen, Gary King · 2018

We show that propensity score matching (PSM), an enormously popular method of preprocessing data for causal inference, often accomplishes the opposite of its intended goal — thus increasing imbalance, inefficiency, model dependence, and bi…

Replication Data for: Why Propensity Scores Should Not Be Used for Matching Open

Gary King, Richard A. Nielsen · 2018

We show that propensity score matching (PSM), an enormously popular method of preprocessing data for causal inference, often accomplishes the opposite of its intended goal --- increasing imbalance, inefficiency, model dependence, and bias.…

4.3_find_hidden_experiments-1.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script here: ~\archive_psnot\4.3_find_hidden_experiments\find_hidden_experiments_code_10jan2018.R Run-time is on the order of 6 hours.

readme.txt Open

Gary King, Richard Nielsen · 2018

This archive provides code and saved data files in various formats to reproduce the results in the King and Nielsen working paper on propensity score matching.

A.3_second_example.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script: ~\archive_psnot\A.3_second_example\pscore_sims.R Run time is on the order of 15 hours (estimate less precise on this one)

5.2_bias_simulations.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script here: ~\archive_psnot\5.2_bias_simulations\5.2_bias_simulations.R Run-time is on the order of 6 hours.

A.4_paradox_with_mdm.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script: ~\archive_psnot\A.3_second_example\paradox_with_mdm_29jun2018.R Run time is approx. 15 mins.

A.2_large_simulation.tar Open

Gary King, Richard A. Nielsen · 2018

Appendix Section 2 Large Simulation-see readme file for instructions.

A.3_large_simulation.tar Open

Gary King, Richard A. Nielsen · 2018

Large Simulation To produce the figure, run the script: ~\archive_psnot\A.2_large_simulation\make_the_figure_11jan2018.R The original scripts run in this order: 1) \original_files\makeParadoxData_21oct2014.R creates the simulated data sets…

5.3_Nielsen_et_al_example-1.tar Open

Gary King, Richard A. Nielsen · 2018

Nielsen et al. replication Run the script here: ~\archive_psnot\5.3_Nielsen_et_al_example\nielsen_et_al_10jan2018.R Run-time is on the order of 10 minutes.

5.3_Finkel_et_al_example-1.tar Open

Gary King, Richard A. Nielsen · 2018

Finkel et al. replication Run the script here: ~\archive_psnot\5.3_Finkel_et_al_example\finkel_15mar2015.R Run-time is on the order of 10 minutes.

readme.txt Open

Gary King, Richard Nielsen · 2018

This archive provides code and saved data files in various formats to reproduce the results in the King and Nielsen working paper on propensity score matching.

readme.txt Open

Gary King, Richard Nielsen · 2018

Readme

A.4_second_example.tar Open

Gary King, Richard A. Nielsen · 2018

A.3_paradox_with_mdm.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script: ~\archive_psnot\A.3_second_example\paradox_with_mdm_29jun2018.R Run time is approx. 15 mins.

A.1.1_twelve_obs_example.tar Open

Gary King, Richard A. Nielsen · 2018

12 obs simulation Run the script here: ~\archive_psnot\A.1.1_twelve_obs_example\twelve_obs_example_11jan2018.R Run-time is on the order of 10 seconds.

5.3_Finkel_et_al_example.tar Open

Gary King, Richard A. Nielsen · 2018

Finkel et al. replication Run the script here: ~\archive_psnot\5.3_Finkel_et_al_example\finkel_15mar2015.R Run-time is on the order of 10 minutes.

A.2_psm_extensions.tar Open

Gary King, Richard A. Nielsen · 2018

PSM Extensions Run these scripts: ~archive_psnot\A.2_psm_extensions\optimal_matching\find_hidden_experiments_optimal_matching_17oct2018.R ~archive_psnot\A.2_psm_extensions\optimal_full_matching\find_hidden_experiments_optimal_full_matching…

A.3_paradox_with_mdm.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script: ~\archive_psnot\A.3_second_examplepscore_sims.R Run time is on the order of 15 hours (estimate less precise on this one)

4.3_find_hidden_experiments.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script here: ~\archive_psnot\4.3_find_hidden_experiments\find_hidden_experiments_code_10jan2018.R Run-time is on the order of 6 hours.

readme.txt Open

Gary King, Richard Nielsen · 2018

5.3_Nielsen_et_al_example.tar Open

Gary King, Richard A. Nielsen · 2018

Nielsen et al. replication Run the script here: ~\archive_psnot\5.3_Nielsen_et_al_example\nielsen_et_al_10jan2018.R Run-time is on the order of 10 minutes.

5.2_bias_simulations-1.tar Open

Gary King, Richard A. Nielsen · 2018

Run the script here: ~\archive_psnot\5.2_bias_simulations\5.2_bias_simulations.R Run-time is on the order of 6 hours.

A.1.1_twelve_obs_example-1.tar Open

Gary King, Richard A. Nielsen · 2018

12 obs simulation Run the script here: ~\archive_psnot\A.1.1_twelve_obs_example\twelve_obs_example_11jan2018.R Run-time is on the order of 10 seconds.

archive_psnot.zip Open

Gary King, Richard Nielsen · 2018

Full replication archive

Replication Data for: The Balance-Sample Size Frontier in Matching Methods for Causal Inference Open

Gary King · 2016

We propose a simplified approach to matching for causal inference that simultaneously optimizes both balance (similarity between the treated and control groups) and matched sample size. Existing approaches either fix the matched sample siz…

kln_replication.R Open

Gary King · 2016

Gary King YOU? Author Swipe