npv {cutpointr}R Documentation

Calculate the negative predictive value

Description

Calculate the negative predictive value (NPV) from true positives, false positives, true negatives and false negatives. The inputs must be vectors of equal length.

npv = tn / (tn + fn)

Usage

npv(tp, fp, tn, fn, ...)

Arguments

tp

(numeric) number of true positives.

fp

(numeric) number of false positives.

tn

(numeric) number of true negatives.

fn

(numeric) number of false negatives.

...

for capturing additional arguments passed by method.

See Also

Other metric functions: F1_score(), Jaccard(), abs_d_ppv_npv(), abs_d_sens_spec(), accuracy(), cohens_kappa(), cutpoint(), false_omission_rate(), metric_constrain(), misclassification_cost(), odds_ratio(), p_chisquared(), plr(), ppv(), precision(), prod_ppv_npv(), prod_sens_spec(), recall(), risk_ratio(), roc01(), sensitivity(), specificity(), sum_ppv_npv(), sum_sens_spec(), total_utility(), tpr(), tp(), youden()

Examples

npv(10, 5, 20, 10)
npv(c(10, 8), c(5, 7), c(20, 12), c(10, 18))

[Package cutpointr version 1.1.1 Index]