Table 2.
Demographic details, sensitivity, and specificity for study participants (N = 179) tested for LF antigen with both Filariasis Test Strip (FTS) and immunochromatographic test (ICT), American Scheme 2016.
| Number Tested | FTS-Positive (%) | ICT-Positive (%) | Sensitivity of ICT Compared to FTS (%) | Specificity of ICT Compared to FTS (%) | |
|---|---|---|---|---|---|
| Overall | 179 | 112 (62.6) | 105 (58.7) | 93.8 (87.5–97.5) | 100 (94.6–100) |
| Age groups | |||||
| ≤14 years | 37 | 20 (54.1) | 19 (51.4) | 95.0 (75.1–99.9) | 100 (80.5–100.0) |
| 15–44 years | 74 | 42 (56.8) | 40 (54.1) | 95.2 (83.8–99.4) | 100 (89.1–100.0) |
| ≥45 years | 68 | 50 (73.5) | 46 (67.7) | 92.0 (80.8–97.8) | 100 (81.5–100.0) |
| Sex | |||||
| Male | 107 | 76 (71.0) | 70 (65.4) | 92.1 (83.6–97.0) | 100 (88.8–100.0) |
| Female | 72 | 36 (50.0) | 35 (48.6) | 97.2 (85.5–99.9) | 100 (90.3–100.0) |
| FTS-positive/Mf status | |||||
| Mf-positive | 28 # | 28 (100.0) | 28 (100.0) | 100 (87.7–100.0) * | 100 $ |
| Mf-negative | 72 # | 72 (100.0) | 65 (90.3) | 90.3 (81.0–96.0) | 100.0 (94.6–100.0) |
* one-sided, 97.5% confidence interval # slides were only available for persons who were FTS-positive. $ FTS and ICT results were 100% concordant for persons who were FTS- and Mf-positive.