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Table 2 Improvements to the accuracy of NIRS in detecting presence of sporozoites and oocysts according to the number of times the mosquito was scanned. Mosquitoes are repositioned after each scan. Area under ROC curve (AUC) and misclassification rate (MR) when averaging one (no averaging), two and all available scans; see Table 1 for the number of replicates available. Improvements in performance, from one to all scans, are given in level for AUC and in percentage points for misclassification rate. Values in brackets indicate the percentage improvement in accuracy. Results are for a binomial GLM with 8 PLS components in both sporozoites and oocysts models

From: Detection of Plasmodium berghei infected Anopheles stephensi using near-infrared spectroscopy

 

No. of scans averaged

 

One

Two

All

Change

Sporosoites

AUC

0.72

0.75

0.81

+0.09 (↑12.5%)

MR

41%

33%

28%

-13 p.p.

Oocysts

AUC

0.70

0.68

0.69

-0.01 (↓1.43%)

MR

36%

34%

38%

+2 p.p.