Randomized Controlled Trial
Copyright ©The Author(s) 2016.
World J Otorhinolaryngol. May 28, 2016; 6(2): 45-49
Published online May 28, 2016. doi: 10.5319/wjo.v6.i2.45
Table 1 Mean and standard deviation of correct raw score (words) with different number of channels at various signal-to-noise ratios
-5 dB SNR
0 dB SNR
+5 dB SNR
MeanSDMeanSDMeanSD
4 channels4.003.255.263.278.635.14
8 channels15.105.8418.004.8419.864.04
32 channels23.905.1725.633.7126.931.70
Table 2 Bonferroni multiple pairwise comparisons at all the possible combinations for words (4, 8 and 32 channel) at +5 dB signal-to-noise ratio, 0 dB signal-to-noise ratio and -5 dB signal-to-noise ratio (bP < 0.001)
SNRChannels8 channels (mean difference)32 channels (mean difference)
+5 dB SNR4 channels-11.23b-18.3b
8 channels-7.06b
0 dB SNR4 channels-12.73b-20.36b
8 channels-7.63b
-5 dB SNR4 channels-11.1b-19.9b
8 channels-8.8b