Code
actual <- derive_param_rr(input, by_vars = exprs(USUBJID, VISIT),
set_values_to = exprs(PARAMCD = "RRR", PARAM = "RR Duration Rederived (ms)",
AVALU = "ms"), get_unit_expr = AVALU)
Message
No computed records were added because for all potential computed records at least one of the contributing values was NA.
If this is not expected, please check the input data.
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