Article Figures & Data
Tables
- Table 2
Comparison of interpeak latencies (IPL) (ms) and amplitude ratio (V/I) of BAEP of the right ear between drug abusers (n=58) and controls (n=30).
IPL of right ear Cases Controls t-value p-value Mean SD Mean SD I-III 2.16 0.13 2.31 0.19 4.26 0.0001** I-V 4.01 0.3 4.15 0.24 2.19 0.03* III-V 1.93 0.28 1.82 0.08 2.10 0.04* V/I 171.96 245.71 159.10 146.6 0.26 0.79*** - Table 4
Comparison of interpeak latencies (IPL) (ms) and amplitude ratio (V/I) of BAEP of the left ear between drug abusers (n=58) and controls (n=30).
IPL of left ear Cases Controls t-value p-value Mean SD Mean SD I-III 2.28 0.39 2.09 0.19 2.50 0.01* I-V 4.13 0.44 3.93 0.31 2.20 0.03* III-V 1.98 0.41 1.79 0.31 2.20 0.03* V/I 161.97 265.41 179.50 139.4 0.34 0.74** - 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 Opiates n=21 Alcohol n=11 Pharma n=14 Tobacco n=12 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)
- 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**