Table 3.
Results of antepartum GBS screening by qPCR, Xpert GBS, and culture
| Variable | Total (n = 810) | qPCR (n = 270) | Xpert GBS (n = 270) | Culture (n = 270) |
|---|---|---|---|---|
| Status – n (%) | ||||
| Positive | 245 (30.2) | 135 (50.0) | 75 (27.8) | 35 (13.0) |
| Negative | 507 (62.6) | 129 (47.8) | 169 (62.6) | 209 (77.4) |
| Inconclusive | 1 (0.0) | 0 (0.0) | 1 (0.4) | 0 (0.0) |
| Error | 21 (2.6) | 0 (0.0) | 21 (7.8) | 0 (0.0) |
| No result | 4 (0.5) | 0 (0.0) | 4 (1.5) | 0 (0.0) |
| Not done | 32 (4.0) | 6 (2.2) | 0 (0.0) | 26 (9.6) |
| Valid results – n | 752 | 264 | 244 | 244 |
| Positive | 245 (32.6) | 135 (51.1) | 75 (30.7) | 35 (14.3) |
| Negative | 507 (67.4) | 129 (48.9) | 169 (69.3) | 209 (85.7) |
qPCR real-time polymerase chain reaction, n absolute frequency, % relative frequency