Table 2.

Performance evaluation of microscopy and the Loopamp Malaria Pv Detection Kit for Plasmodium vivax identification, using PCR as the reference method

	Statistic	Microscopy		Pv loop-mediated isothermal amplification
Plasmodium vivax infections	True negative	379		351
	True positive	139		151
	False positive	1		29
	False negative	40		28
	Sensitivity (95% CI)	77.7	(71.6–83.8)	84.4	(79.0–89.7)
	Specificity (95% CI)	99.7	(99.2–100)	92.4	(89.7–95.0)
	Positive predictive value (95% CI)	99.3	(99.7–100)	83.9	(78.5–89.3)
	negative predictive value (95% CI)	90.5	(87.6–93.3)	92.6	(90.0–95.2)
	Cohen’s kappa	0.8212 SE 0.0265	(0.7693–0.8731)	0.7661 SE 0.0292	(0.7088–0.8234)

LAMP = loop-mediated isothermal amplification; SE = standard error.