Table 5

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

Wave	Mean				F-value	P-value
Wave	Opiates n=21	Alcohol n=11	Pharma n=14	Tobacco n=12	F-value	P-value
I	1.58	1.51	1.51	1.46	0.285	0.836^**
II	2.71	2.92	2.74	3.05	2.404	0.077^**
III	3.70	3.68	3.57	3.68	0.629	0.599^**
IV	4.81	4.69	4.85	4.96	1.799	0.158^**
V	5.49	5.42	5.57	5.79	1.281	0.29^**
I-III	2.18	2.17	2.06	2.21	0.553	0.648^**
I-V	3.95	3.91	4.06	4.32	0.964	0.416^**
^{^#}III-V	1.78	1.82	2.06	2.44	5.826	0.002^*

↵* significant p<0.05,
↵** non significant p>0.05,
↵# after post hoc test (Bonferroni Test), a significant difference was observed for inter peak latency (III-V) of the right ear between alcoholics and tobacco smokers (p=0.014); and a highly significant difference was seen between opiate abusers and tobacco smokers (p=0.001)