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. 2022 Mar 28;22:297. doi: 10.1186/s12879-022-07299-1

Table 3.

Diagnostic agreement between any of the two methods (FECT, STST, BCT, APC, RT-PCR) used for the detection of S. stercoralis from stool specimens

Methods Kappa value (95% CI) NOA N, (%) NAEC N, (%) SEK χ2, p-value
Pos Neg
RT-PCR
FECT
 Pos 8 9 0.025 (0.009–0.059) 600 (71.1) 593.8 (70.35 0.017 2.8, 0.083
 Neg 235 592
STST
 Pos 14 20 0.033 (0.011–0.076) 595 (50.5) 586.6 (69.5) 0.022 2.65, 0.078
 Neg 229 581
BCT
 Pos 34 209 0.031 (0.003–0.124) 582 (69.0) 564.1 (66.8) 0.031 0.50, 0.019
 Neg 53 548
APC
 Pos 31 61 0.032 (0.027–0.091) 571 (67.7) 562.0 (66.6) 0.030 1.2, 0.271
 Neg 212 540
APC
FECT
 Pos 12 5 0.193 (0.093–0.292) 759 (89.93) 738.7 (87.52) 0.051 63.6, 0.000
 Neg 80 747
STST
 Pos 21 13 0.292 (0.185–0.398) 760 (90.1) 725.4 (86.0) 0.054 94.4, 0.000
 Neg 71 739
BCT
 Pos 64 23 0.680 (0.599–0.763 793 (94.0) 684.0(81.0) 0.042 392.2, 0.000
 Neg 28 729
BCT
FECT
 Pos 13 4 0.251 (0.136–0.367 759 (91.8) 736.2(89.0) 0.059 82.1, 0.000
 Neg 74 753
STST
 Pos 23 11 0.342 (0.231–0.453) 769 (91.1) 730.0 (86.49) 0.057 126.0, 0.000
 Neg 64 746
STST
FECT
 Pos 10 7 0.375 (0.204–0.547) 813 (96.3) 794.4 (94.1) 0.088 134.7; 0.000
 Neg 24 803

NOA number of observed agreements, NAEC number of agreements expected by chance, SEK standard error of Kappa, Pos positive, Neg negative