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Add level 2 variables from a level 2 dataset to an scdf file
add_l2(data, data_l2, cvar = "case")
A single-case data frame. See scdf to learn about this format.
scdf
A level 2 dataset.
Character string with the name of the "case" variable in the L2 dataset (default is 'case').
An scdf
# NOT RUN { Leidig2018 %>% add_l2(Leidig2018_l2) # }
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