Denominator of negative predictive value is
Predictive value reflects the diagnostic power of the test. It&;s accuracy depends on sensitivity, specificity and disease prevalence. Predictive value of a negative test = d/(c+d)x100 Ref: 25th edition, Park&;s Textbook of Preventive and Social Medicine, Page no. 152
TP + FP
TP + FN
TN + FN
TN + FP
Epidemiology