Table 1.

Mean hearing thresholds in ABR test (ABR mean dB ± standard deviation)

Groups	Day 0	Day 4	Day 8
Group I (Control Group)	10.50±4.37	10.50±5.50	11.00±4.18
Group II (Cisplatin group)	10.00±4.08	16.50±3.37a	25.00±3.53ab
Group III (Cisplatin + Cortexin group)	9.50±4.97	13.50±3.37	16.00±2.23c

The variables were expressed as mean±standard deviation.

^aCompared to the Control group, Cisplatin group had significantly elevated hearing thresholds on the 4^th and the 8^th days (p<0.05).

^bCisplatin group had significantly elevated hearing threshold on the 8^th day compared to the 4^th day (p<0.05).

^cComparison of the mean hearing thresholds of Cisplatin+Cortexin group and Cisplatin group on the 8^th day indicated that there was a significant decrease in the Cisplatin+Cortexin group (p<0.05).

ABR: auditory brainstem response