<ROOT>_L_<V> and <ROOT>_R_<V> give <ROOT>_<V>. If only one side is
available its value is used (allow_one_side = TRUE).
Usage
combine_bilateral(
df,
roots,
visits = c("V0", "V3"),
sides = c("L", "R"),
allow_one_side = TRUE,
suffix_new = NULL
)
Arguments
- df
A data frame.
- roots
Root names of the bilateral measures.
- visits
Visit suffixes.
- sides
Side codes.
- allow_one_side
Use the single available side when the other is
missing.
- suffix_new
Optional text appended to the root of the new columns.
Value
df with the new columns.
Examples
d <- combine_bilateral(cohort_sim, "PUT")
head(d[, c("PUT_L_V0", "PUT_R_V0", "PUT_V0")])
#> PUT_L_V0 PUT_R_V0 PUT_V0
#> 1 4.05 3.74 3.895
#> 2 3.88 3.77 3.825
#> 3 4.52 4.50 4.510
#> 4 4.80 4.65 4.725
#> 5 5.05 5.32 5.185
#> 6 5.02 5.05 5.035
