Table 6 EEG in the studied groups
From: Impact of tramadol and heroin abuse on electroencephalography structure and cognitive functions
Tramadol group (n = 40) | Heroin group (n = 40) | Control group (n = 40) | χ2 | P | ||||
|---|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | |||
Normal | 19 | 47.50 | 27 | 67.50 | 32 | 80 | 7.059 | 0.029 |
Abnormal | 21 | 52.50 | 13 | 32.50 | 8 | 20 | ||