Table 6

Comparison of absolute latencies of waves (ms) and interpeak latencies (ms) of BAEP of the left ear between different groups of drug abusers (n=58) using one way ANOVA.

	Mean				F-value	P-value
Wave	Opiates n=21	Alcohol n=11	Pharma n=14	Tobacco n=12
I	1.430	1.40	1.54	1.48	0.413	0.744^**
^{^#}II	2.74	2.73	2.69	2.32	3.317	0.027^*
^{^#}III	3.67	3.99	3.78	3.76	2.824	0.047^*
IV	4.76	5.00	4.74	4.68	1.406	0.251^**
V	5.40	5.86	5.61	5.76	2.976	0.04^*
I-III	2.23	2.59	2.24	2.28	2.392	0.079^**
I-V	4.02	4.46	4.07	4.28	1.532	0.217^**
III-V	1.76	1.86	1.83	2	0.782	0.509^**

↵* significant p<0.05,
↵** non significant p>0.05,
↵# After post-hoc test in the BAEP of the left ear, a significant difference was observed in wave II between opiate addicts and tobacco smokers (p=0.029), and in wave III between opiate addicts and alcoholics (p=0.032)