Table 3: Statistical anlalysis. A linear mixed model representation of the repeated measures ANOVA resulted in a main effect of the level contrast with post-hoc comparisons where the main effect was significant.

Conditions

Main effectHearing aid A (Recording 1)Hearing aid B (Recording 2)Hearing aid B (Recording 3)
F Valuedf F Valuedf F Valuedf F Valuedf

Low to Mid level
 N1 Latency (ms)9.363,97<0.000113.781,970.00034.031,970.047410.251,970.0018
 P2 Latency (ms)17.533,96<0.000130.521,96<0.00010.471,960.495521.61,96<0.0001
 N1 Amplitude (μV)6.923,970.00030.031,970.8684.181,970.043516.541,97<0.0001
 P2 Amplitude (μV)3.163,960.02822.841,960.09540.671,960.41345.961,960.0164
Mid to High level
 N1 Latency (ms)0.643,970.5894
 P2 Latency (ms)0.383,970.7698
 N1 Amplitude (μV)0.313,970.8163
 P2 Amplitude (μV)2.073,960.109