| nhefs_codebook | R Documentation |
nhefs_codebook is the codebook for nhefs and nhefs_complete.
nhefs_codebook
A data frame with 64 rows and 2 variables.
The variable being described
The variable description
https://wwwn.cdc.gov/nchs/nhanes/nhefs/
Hernán and Robins. Causal Inference. https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/