Table 1. Comparison of sensitivity of Kato-Katz smear and quantitative PCR results for 778 stool samples tested for soil-transmitted helminths, Foya and Harper districts, Liberia.

Site and species	No. positive*	Kato-Katz smear sensitivity, %	qPCR sensitivity, %	McNemar p value
Foya district, n = 353
Ascaris lumbricoides	34	91.2	17.6	<0.0001
Hookworm†	247	93.5	83.4	<0.0001
Trichuris trichiura	27	100	7.4	<0.0001
Schistosoma mansoni	307	89.9	84.0	0.0573
Harper district, n = 225
A. lumbricoides	180	90.6	98.9	0.0013
Hookworm†	99	65.7	89.9	0.0005
T. trichiura	86	59.3	94.2	0.0001

*Samples that tested positive by either method.
†Hookworm was Necator americanus. No Ancylostoma duodenale was detected.