T wave Abnormalities Inverted T wave

| Age_ethnicity | n | V1 | V2 | V3 | V4 | V5 | V6_ |
|---|---|---|---|---|---|---|---|
| 16 y - 19 y (blacks) | 310 | 46% | 7% | 2.9% | 1.3% | 0% | 0% |
| 20 - 30 y (whites) | 285 | 41% | 0% | 0% | 0% | 0% | 0% |
| 20 - 30 y (blacks) | 295 | 37% | 0% | 0% | 0% | 0% | 0% |
| Females |  |  |  |  |  |  |  |
| 12 y - 13 y | 174 | 69% | 11% | 1.2% | 0% | 0% | 0% |
| 13 y - 14 y | 154 | 52% | 8.4% | 1.4% | 0% | 0% | 0% |
| 16 y - 19 y (whites) | 50 | 66% | 0% | 0% | 0% | 0% | 0% |
| 16 - 19 y (blacks) | 310 | 73% | 9% | 1.3% | 0.6% | 0% | 0% |
| 20 - 30 y (whites) | 280 | 55% | 0% | 0% | 0% | 0% | 0% |
| 20 - 30 y (blacks) | 330 | 55% | 2.4% | 1% | 0% | 0% | 0% |