Replication: The Effect of Mandatory COVID-19 Certificates on Vaccine Uptake

This repository provides all materials for replication of results in

Mills, M. C., and Rüttenauer, T. (2021). The Effect of Mandatory COVID-19 Certificates on Vaccine Uptake: Synthetic-Control Modelling of Six Countries. The Lancet Public Health, OnlineFirst. https://doi.org/10.1016/S2468-2667(21)00273-5

Date: 2021-12-23

Set up

The code for replication of the results requires the following folders: “01_Script”, “02_Data”, “03_Output”. All R Scripts are required in folder “01_Script”, all data are required in folder “02_Data”.

To reproduce the results of the paper, the scripts need to be executed in order.

The following packages are necessary for reproduction of main results:

install.packages(Synth)
install.packages(SCtools)
install.packages(ggplot2)
install.packages(viridis)
install.packages(cowplot)
install.packages(texreg)
install.packages(grid)
install.packages(gridtext)
install.packages(gridExtra)
install.packages(colorspace)
install.packages(parallel)
install.packages(doParallel)
install.packages(future.apply)
install.packages(ISOweek)
install.packages(WDI)
install.packages(wpp2019)

Scripts:

• 01_Download_Data: Downloads and prepares data from Our World in Data and OxCGRT.

• 02_Synthetic_Control_bootstrap: Performs the main synthetic control analysis.

• 02b_Synthetic_Control_placebo: Performs the placebo analysis (appendix).

• 02c_Synthetic_Control_resample: Performs the resample analysis (appendix).

• 03_Decriptive_age: Performs age specific analyses from country specific data (in 02_Data).

Data:

All data for this paper are freely available and accessible online. The sources are documented in the code.

System and version information

Platform: x86_64-pc-linux-gnu

Version: R version 4.0.5