GFR Staging

Source: R/ckd.R

Using KDIGO 2012 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease Volume 3 | Issue 1 | January 2013

GFR_staging(...)

# S3 method for data.frame
GFR_staging(.data, GFR, ...)

# S3 method for units
GFR_staging(GFR, ...)

# S3 method for numeric
GFR_staging(GFR, ...)

Arguments

...

Further optional arguments

.data

(data.frame) A data.frame, optional

GFR

Glomerular filtration rate column name, or vector of units or numeric if .data is not provided

Value

GFR category

Details

  • G1: Normal or high GFR, \(\ge\)90

  • G2: Mildly decreased, 60-89

  • G3a: Mildly to moderately decreased, 45-59

  • G3b: Moderately to severely decreased, 30-44

  • G4: Severely decreased, 15-29

  • G5: Kidney failure, <15

See https://kdigo.org/guidelines/ckd-evaluation-and-management/ for more details

Examples

df <- tibble::tibble(
  eGFR = units::set_units(c(-1, NA, 100, 70, 50, 35, 20, 10), "mL/min/1.73m2")
)

GFR_staging(df, "eGFR")
#> [1] <NA> <NA> G1   G2   G3a  G3b  G4   G5  
#> Levels: G1 < G2 < G3a < G3b < G4 < G5

df %>%
  dplyr::mutate(GFR_level = GFR_staging(eGFR))
#> # A tibble: 8 × 2
#>              eGFR GFR_level
#>   [mL/1.73m2/min] <ord>    
#> 1              -1 NA       
#> 2              NA NA       
#> 3             100 G1       
#> 4              70 G2       
#> 5              50 G3a      
#> 6              35 G3b      
#> 7              20 G4       
#> 8              10 G5