Table 3.
Counts and percentages of negative and positive UCTDA and breakouts according to number of discrete drugs identified.
| Finding | Total | Overall, % | Epoch 1 | Overall, % | Epoch 2 | Overall, % |
|---|---|---|---|---|---|---|
| UCTDA performed | 6051 | 3021 | 3030 | |||
| Positive UCTDA | 1357 | 22 | 753 | 25 | 604 | 20 |
| Of Positive UCTDA | ||||||
| Number of drugs found | n | % | n | % | n | % |
| 1 | 1081 | 80 | 605 | 80 | 476 | 79 |
| 2 | 221 | 16 | 126 | 17 | 95 | 15 |
| 3 | 34 | 2.5 | 16 | 2.1 | 18 | 3 |
| 4 | 15 | 1.1 | 6 | 0.8 | 9 | 1.5 |
| 5 | 3 | 0.2 | 0 | 0 | 3 | 0.5 |
| 6 | 3 | 0.2 | 0 | 0 | 3 | 0.5 |
UCTDA, umbilical cord tissue drug analysis; Overall %, count of the number of drugs in question in umbilical cord tissue samples in positive UCTDA performed.