Test(s) | Subjects tested | All tests positive | At least one test positive | ||
---|---|---|---|---|---|
 |  | Number of subjects | % | Number of subjects | % |
All three tests | 26 | 1 | 4 | 12 | 46 |
Two tests | Â | Â | Â | Â | Â |
Fetal scalp and umbilical arterial blood pH | 178 | 27 | 15 | 77 | 43 |
Umbilical arterial and venous pH | 41,245 | 3,583 | 9 | 8,866 | 21 |
Fetal scalp and umbilical venous blood pH | 4 | 0 | 0 | 0 | 0 |
One test | Â | Â | Â | Â | Â |
Fetal scalp pH | 47 | 16 | 34 | 16 | 34 |
Umbilical arterial blood pH | 75,775 | 7,727 | 10 | 7,727 | 10 |
Venous umbilical blood pH | 3,561 | 385 | 11 | 385 | 11 |
Any of the three tests | 120,836 | 11,739 | 10 | 17,083 | 14 |