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Table 5 The sensitivity, specificity and positive predictive power of the multiplicative model at Nandi

From: Development and validation of climate and ecosystem-based early malaria epidemic prediction models in East Africa

V-shaped ecosystem model performance, Nandi district
Event Epidemic positive Epidemic negative Total
Model positive True positive (TP) False positive 7
6 1
Model negative False negative (FN) True negative (TN) 111
2 109
Total 8 110 118
Sensitivity TP/(TP + FN)   0.75
Specificity TN/(TN + FP)   0.99
Positive predictive power TP/(TP + FP)   0.86