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| Isotretinoin group | Control group | p Value | |||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| A wave amplitude | 276.8 μV | 22.4 | 324.2 μV | 35.5 | <0.005 |
| B wave amplitude | 496.5 μV | 51.3 | 501.7 μV | 62.3 | Not significant |
| a:b wave ratio | 0.55 | 0.04 | 0.69 | 0.08 | <0.001 |
