-----------------------------------------------
lines 6-53 of file: example/csv/cov_same_xam.py
-----------------------------------------------

{xrst_begin csv.cov_same_xam}
{xrst_spell
  haqi
}

Example and Test of covariate_same
##################################

Covariates
**********
This example has two covariates, haqi and income.

haqi
====
This covariate only depends on age and time; i.e.,
it is the same for all nodes and both sexes.

income
======
This covariate depends on age, time, and sex.
It is the same for all nodes.

covariate_table
***************
The covariate table is shuffled, after it is created,
to demonstrate the fact that the order of its rows does not matter.

cov_same
********
cov_same is checked to see that it detects the following:

haqi
====
This covariate is the same for all nodes and both sexes.

income
======
This covariate is different for each sex,
but given sex it is the same for all nodes.

Source
******
{xrst_literal
    # BEGIN_SOURCE
    # END_SOURCE
}

{xrst_end csv.cov_same_xam}