Table 3 The comparison of reproducibility between technicians, machines and conditions changes
Comparison | RT-PCR | rRT-PCR | ||
|---|---|---|---|---|
|  | n | Kappa ± SEa | n | Kappa ± SE |
Technician | ||||
   T1&T2 | 132 | 0.976 ± 0.022 | 129 | 0.908 ± 0.040 |
Machines | ||||
   M1&M2 | 88 | 1.000 ± 0.000 | / | / |
   M1&M3 | 88 | 1.000 ± 0.000 | / | / |
   M4&M5 | / | / | 72 | 0.870 ± 0.073 |
Conditions | ||||
   C1&C2 | 64 | 1.000 ± 0.000 | 64 | 1.000 ± 0.000 |
   C1&C3 | 64 | 1.000 ± 0.000 | 64 | 1.000 ± 0.000 |
   C1&C4 | 64 | 0.925 ± 0.052 | 64 | 0.804 ± 0.083 |
Labs | ||||
   Lab1 & Lab2 | 84 | 1.000 ± 0.000 | 72 | 1.000 ± 0.000 |