Calculate baseline sCr
calc_baseline_scr(
  baseline_scr,
  scr,
  times,
  method,
  first_dose_time = NULL,
  verbose
)baseline serum creatinine method (character). See calc_aki_stage() for availabloptions.
serum creatinine in mg/dL. Use `convert_creat()` to convert from mmol/L. Values below the detection limit ("<0.2") will be converted to numeric (0.2)
creatinine sample times in hours
classification method, one of `KDIGO`, `RIFLE`, `pRIFLE` (case insensitive)
time in hours of first dose relative to sCr value, used for calculate baseline serum creatinine in `median_before_treatment` approach.
verbose (`TRUE` or `FALSE`)