malcolmbarrett/cidata: Data from Causal Inference by Hernán and Robins

Includes 4 data sets used in Causal Inference by Hernán and Robins: `nhefs`, a cleaned version of NHEFS data, `nhefs_complete`, a complete case version of `nhefs`, `nhefs_codebook`, the codebook for NHEFS, and `greek_data`, the data from Table 2.2 used in Chapter 13.

install.packages("remotes")
remotes::install_github("malcolmbarrett/cidata")