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Qualitative comparison between PPRNT and FFRNT
| FFRNT | Sensitivity (%) | Specificity (%) | Agreement (%) | Kappa | ||
|---|---|---|---|---|---|---|
| |
> 4 |
< 4 |
*(95% CI) |
(95% CI) |
(95% CI) |
|
| PPRNT |
|
|
|
|
|
|
| > 4 |
49 |
1 |
98.0 |
100 |
96.6 |
0.96 |
| < 4 | 0 | 20 | ||||
*Fold differences were calculated based on the within and between assay standard deviation of log10 titres within which results from testing a sample twice should fall 95% of the time.
