Table 2.

Clinical Performance of the ReEBOV Antigen Rapid Test

Clinical Performance	qRT-PCR Positivea	qRT-PCR Negative	Total
RDT positive	72b	2	74
RDT negative	44c	58	102
Total	116	60	176
	Proportion	Percentage (95% CI)
PPA	72/116	62.1 (52.6–70.9)
NPA	58/60	96.7 (88.5–99.6)
PPV	72/74	97.3 (90.6–99.7)
NPV	58/102	56.9 (46.7–66.6)
Accuracy	130/176	73.9 (66.9–79.8)

The diagnostic likelihood was 18.6 (P < .0001).

Abbreviations: CI, confidence interval; Ct, cycle threshold; NPA, negative percentage agreement; NPV, negative predictive value; PPA, positive percentage agreement; PPV, positive predictive value; qRT-PCR, quantitative reverse transcription–polymerase chain reaction; RDT, rapid diagnostic test.

^a A Ct value of <45 was considered positive.

^b RDT true-positive Ct range, 19.6–29.1.

^c RDT false-negative Ct range, 33.6–40.2.