An example dataset in the CMAverse package

`cma2020`

A data frame with 1000 rows and 8 variables:

- ID
the id number for each subject

- C1
a continuous baseline confounder

- C2
a binary baseline confounder

- A
the binary exposure

- M1
a binary mediator

- M2
a categorical mediator with 3 levels

- contY
a continuous outcome

- binY
a binary outcome