DVRs, 1-Way ANOVA, and Scheffé Post Hoc Test
| Region | Actual ecstasy users (group A) (n = 30) | Former ecstasy users (group F) (n = 29) | Drug-naive controls (group N) (n = 29) | Polydrug users (group P) (n = 29) | ANOVA | Scheffé test | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| dF | F | P | ||||||||
| Mesencephalon | 1.163 ± 0.071 | 1.220 ± 0.074 | 1.224 ± 0.047 | 1.234 ± 0.069 | 116 | 6.858 | 0.000 | A/F*A/N*A/P† | ||
| Putamen | 1.356 ± 0.100 | 1.386 ± 0.097 | 1.387 ± 0.066 | 1.407 ± 0.090 | 116 | 1.628 | 0.187 | |||
| Caudate | 1.198 ± 0.085 | 1.239 ± 0.093 | 1.239 ± 0.049 | 1.258 ± 0.082 | 116 | 3.034 | 0.032 | A/P‡ | ||
| Thalamus | 1.349 ± 0.088 | 1.402 ± 0.090 | 1.408 ± 0.073 | 1.411 ± 0.100 | 116 | 3.341 | 0.022 | A/N‡A/P‡ | ||
| White matter | 0.561 ± 0.064 | 0.565 ± 0.047 | 0.577 ± 0.057 | 0.566 ± 0.062 | 116 | 0.430 | 0.732 | |||