Setting
Blackman-gated 1kHz tone-pips with 1ms, 2ms and 3ms duration were used in normal hearing (NH) subjects to calibrate the system and the standard ABR threshold and wave V latency for this system were established. All subjects would take four hearing tests: Pure tone audiometry (PTA) before and six-month after the surgery, fs-ABR under anesthesia before surgery and right after the ossicular chain reconstruction intra-operatively. Bland-Altman and linear correlation analysis were used to compare the agreement between PTA and fs-ABR results.