TABLE 1

Comparison of the InBios, SciMedx, and LIPS assays to the consensus result for detection of IgG class antibodies to S. stercoralis

Assay typeAssay resultConsensus result (no.)a% agreement (95% CIb)Kappa (95% CI)
PositiveNegativeOverallPositivecNegatived
InBios Strongy Detect ELISAPositive46387.1(79.1–92.5)83.6 (71.5–91.4)91.3 (79.1–97.1)0.74 (0.61–0.87)
Negative842
Equivocal11
SciMedx Strongyloides ELISAPositive47584.2 (75.7–90.1)85.5 (73.6–92.7)82.6 (69.0–91.2)0.68 (0.54–0.82)
Negative538
Equivocal33
LIPS assayPositive49589.1 (81.4–94.0)89.1 (77.8–95.3)89.1 (76.5–95.7)0.78 (0.66–0.90)
Negative641
  • a The reference standard was defined as the result obtained from ≥2 of the 3 immunoassays.

  • b CI, confidence interval.

  • c Equivocal results were counted as negative.

  • d Equivocal results were counted as positive.