First predict serum creatinine using smoothing spline, then predict GFR using CKD-EPI equation.
estimate_gfr(gfrtmp.dt)
A data.table with columns gender
, reth
,
age_years
, age_months
, BSA_adj
, serum_creat
.
The same data.table with a gfr_est
column added, containing
estimated GFR values.
Ring, Caroline L., et al. "Identifying populations sensitive to environmental chemicals by simulating toxicokinetic variability." Environment International 106 (2017): 105-118.