Adds KFRE risk columns for selected model sizes and horizons using the 4, 6, or 8 variable equations.
Usage
add_kfre_risk_col(
df,
age_col = NULL,
sex_col = NULL,
eGFR_col = NULL,
uACR_col = NULL,
dm_col = NULL,
htn_col = NULL,
albumin_col = NULL,
phosphorous_col = NULL,
bicarbonate_col = NULL,
calcium_col = NULL,
num_vars = 8,
years = c(2, 5),
is_north_american = FALSE,
copy = TRUE,
precision = NULL
)Arguments
- df
Data frame with predictor columns.
- age_col
Column name for age.
- sex_col
Column name for sex, text or integer accepted.
- eGFR_col
Column name for eGFR, mL/min/1.73 m^2.
- uACR_col
Column name for uACR, mg/g.
- dm_col
Optional column name for diabetes indicator.
- htn_col
Optional column name for hypertension indicator.
- albumin_col
Optional column name for serum albumin, g/dL.
- phosphorous_col
Optional column name for serum phosphorus, mg/dL.
- bicarbonate_col
Optional column name for bicarbonate, mmol/L.
- calcium_col
Optional column name for calcium, mg/dL.
- num_vars
Integer or vector, one of 4, 6, 8.
- years
Integer or vector, any of 2, 5.
- is_north_american
Logical, use North American calibration.
- copy
Logical, if TRUE work on a copy of
df.- precision
Optional integer, digits to round probabilities.
References
Tangri, N., Stevens, L. A., Griffith, J., Tighiouart, H., Djurdjev, O., Naimark, D., Levin, A., & Levey, A. S. (2011). A predictive model for progression of chronic kidney disease to kidney failure. JAMA, 305(15), 1553–1559. doi:10.1001/jama.2011.451
Tangri, N., Grams, M. E., Levey, A. S., et al. (2016). Multinational assessment of the accuracy of the Kidney Failure Risk Equation in people with chronic kidney disease. JAMA, 315(2), 164–174. doi:10.1001/jama.2015.18202
Examples
df <- data.frame(
age = 60L, sex = 1L, eGFR = 30, uACR = 500,
dm = 1L, htn = 0L, albumin = 40,
phosphorous = 1.1, bicarbonate = 24, calcium = 9.2
)
add_kfre_risk_col(
df,
age_col = "age", sex_col = "sex",
eGFR_col = "eGFR", uACR_col = "uACR",
num_vars = 4, years = 2
)
#> age sex eGFR uACR dm htn albumin phosphorous bicarbonate calcium
#> 1 60 1 30 500 1 0 40 1.1 24 9.2
#> kfre_4var_2year
#> 1 0.05770765