Table 1. Results of pooled sensitivity and specificity, before and after adjustment for imperfect reference standard.
POC Test | Sample | Reference Standard | Pooled Parameters | Assuming Perfect Reference Standard (95% CrI) | Assuming Imperfect Reference Standard (95% CrI) | Reported Parameter by Manufacturer |
Determine | Serum | TP Specific (n = 11) | Sensitivity | 92.03% (87.22, 95.77) | 90.04% (80.45, 95.21) | 100% |
Specificity | 92.68% (87.24, 95.87) | 94.15% (89.26, 97.66) | 100% | |||
Whole Blood | TP Specific (n = 15) | Sensitivity | 79.54% (71.95, 86.04) | 86.32% (77.26, 91.70) | 92.30% | |
Specificity | 98.91% (97.71,99.71) | 95.85% (92.42, 97.74) | 100% | |||
TP & non-TP Specific (n = 8) | Sensitivity | 77.68% (60.94, 90.40) | 47.84% (18.25, 83.18) | NA | ||
Specificity | 98.18% (94.42, 99.93) | 97.81% (89.75, 99.79) | NA | |||
SD Bioline | Serum | TP Specific (n = 8) | Sensitivity | 87.88% (82.43, 91.80) | 87.06% (75.67, 94.50) | 99.3% |
Specificity | 96.03% (92.67, 98.05) | 95.85% (89.89, 99.53) | 99.5% | |||
Whole Blood | TP Specific (n = 13) | Sensitivity | 83.78% (80.89, 86.47) | 84.50% (78.81, 92.61) | NA | |
Specificity | 98.39% (97.56, 99.01) | 97.95% (92.54, 99.33) | NA | |||
Syphicheck | Serum | TP Specific (n = 7) | Sensitivity | 75.96% (63.55, 85.29) | 74.48% (56.85, 88.44) | 100% |
Specificity | 98.51% (96.85, 99.59) | 99.14% (96.37, 100.0) | NA | |||
Whole Blood | TP Specific (n = 12) | Sensitivity | 75.12% (70.00,80.48) | 74.47% (63.94, 82.13) | NA | |
Specificity | 99.44% (98.96, 99.81) | 99.58% (98.91, 99.96) | NA | |||
Visitect | Serum | TP Specific (n = 7) | Sensitivity | 87.32% (79.97, 92.14) | 85.13% (72.83, 92.57) | NA |
Specificity | 95.76% (92.17, 97.76) | 96.45% (91.92, 99.29) | NA | |||
Whole Blood | TP Specific (n = 14) | Sensitivity | 76.22% (69.82, 81.62) | 74.26% (53.62, 83.68) | NA | |
Specificity | 99.33% (98.73, 99.78) | 99.43% (98.22, 99.98) | NA |
CrI = Credible Interval; “n” refers to the number of data entries per group; NA = Not Available.