Table I.
Table lists G6PD screening test outcomes at various thresholds of G6PD inhibition and the statistical noninferiority statistics of CSG vs FST at each level
% Normal G6PD activity | Test type | Test positive for deficiency | Test negative for deficiency | Number of tests | % Positive for deficiency | P value | Result |
---|---|---|---|---|---|---|---|
≤20% | FST | 30 | 1 | 31 | 97% | 0.058 | Inconclusive |
CSG | 31 | 0 | 31 | 100% | |||
≤30% | FST | 75 | 3 | 78 | 96% | 0.006 | Not inferior |
CSG | 77 | 1 | 78 | 99% | |||
≤40% | FST | 101 | 11 | 112 | 90% | 0.003 | Not inferior |
CSG | 107 | 5 | 112 | 96% | |||
≤50% | FST | 117 | 33 | 150 | 78% | 0.001 | Not inferior |
CSG | 131 | 19 | 150 | 87% | |||
≤60% | FST | 119 | 60 | 179 | 67% | 0.001 | Not inferior |
CSG | 137 | 42 | 179 | 77% | |||
≤70% | FST | 121 | 81 | 202 | 60% | 0.001 | Not inferior |
CSG | 142 | 60 | 202 | 70% | |||
≤80% | FST | 121 | 97 | 218 | 56% | <0.001 | Not inferior |
CSG | 145 | 73 | 218 | 67% | |||
≤90% | FST | 122 | 110 | 232 | 53% | 0.001 | Not inferior |
CSG | 146 | 86 | 232 | 63% | |||
≤100% | FST | 122 | 124 | 246 | 50% | 0.001 | Not inferior |
CSG | 146 | 100 | 246 | 59% | |||
>100% | FST | 0 | 23 | 23 | 0% | 0.443 | Inconclusive |
CSG | 0 | 23 | 23 | 0% |
Abbreviations: CSG, CareStart G6PD; FST, fluorescent spot test; G6PD, glucose-6-phosphate dehydrogenase.