Table 3.
Performance of the Rapid antigen test in field.
| Overall Study Population | Adults ≥ 18 Years | Pediatric < 18 Years | |
|---|---|---|---|
| Se | 27.5% [18.1–38.6%] |
30.4% [18.8–44.1%] |
20.8% [7.1–42.2%] |
| Sp | 99.6% [99.3–99.8%] |
99.8% [99.5–99.9%] |
99.1% [98.2–99.6%] |
| PPV * | 59.5% [44.2–73.1%] |
70.8% [51.2–84.9%] |
38.5% [18.1–63.9%] |
| NPV * | 98.4% [98.2–98.6%] |
98.6% [98.3–98.8%] |
97.8% [97.3–98.2%] |
* Positive predictive value (PPV) and negative predictive value (NPV) were calculated using a prevalence of 2.2%.