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Visual P300 Amplitude in Association with Development of SUD
| Total n | SUD Positive Mean ± SD (n) |
SUD Negative Mean ± SD (n) |
t | df | p | |
|---|---|---|---|---|---|---|
| Age 9 | 82 | 29.88 | 36.43 | 2.36 | 80 | .021 |
| 12.25 (22) | 10.70 (60) | |||||
| Age 11 | 77 | 29.46 | 33.10 | 1.35 | 75 | ns |
| 11.72 (20) | 9.87 (57) | |||||
| Age 14 | 79 | 24.90 | 27.66 | 1.11 | 77 | ns |
| 7.44 (21) | 10.42 (58) | |||||
| Age 17 | 77 | 21.16 | 21.45 | .12 | 75 | ns |
| 7.88 (20) | 10.25 (57) | |||||
| Age 20 | 55 | 18.04 | 19.06 | .48 | 53 | ns |
| 6.50 (15) | 7.31 (40) |
ns, nonsignificant; SUD, substance use disorder.
