Table 5.

Summary of statistical analyses for LF CI cutoff in the different listening configurations (bimodal, bilateral-aided EAS) and assessments (fixed SNR, subjective listening difficulty, and adaptive SRT). Data were derived from one-way, repeated measures ANOVA. Post hoc testing was completed using all pairwise multiple comparisons with the Holm-Sidak statistic for parametric analyses and Tukey for the non-parametric analyses. Only bimodal SRT data were analyzed with non-parametric statistics due to lack of normality.

	LF CI cutoff definition	Bimodal	Bilateral-aided EAS	CI only (unilateral)
Speech understanding (% correct), fixed SNR	Discrete LF CI cutoff	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 7.9, p < 0.001 • 813 Hz < 438 Hz, 313 Hz, & 188 Hz • 688 Hz < 438 Hz, 313 Hz, & 188 Hz	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 9.1, p < 0.001 • 813 Hz < 563 Hz, 438 Hz, 313 Hz, & 188 Hz • 688 Hz < 438 Hz & 313 Hz	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 7)} = 8.5, p < 0.001 • 813 Hz < 188 Hz, 313 Hz, & 438 Hz • 688 Hz < 188 Hz & 313 Hz
Speech understanding (% correct), fixed SNR	Relative LF CI cutoff	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 5.2, p < 0.001 • Gap (Rx+125 Hz) < full (188 Hz), 438 Hz, & 70 dB HL	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 5.2, p < 0.001 • Gap (Rx+125 Hz) < 438 Hz & Minimal overlap (Rx-125 Hz)	Did not assess
Subjective listening difficulty (VAS), fixed SNR	Relative LF CI cutoff	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 4.5, p = 0.002 • Gap (Rx+125 Hz) < full (188 Hz), 438 Hz, 70 dB HL, & Minimal overlap (Rx-125 Hz)	n = 12 ears, 10 participants • Significant effect of cutoff: F_{(5, 11)} = 4.2, p = 0.003 • Gap < 438 Hz & Minimal overlap (Rx-125 Hz)
Speech understanding (dB SNR), adaptive SRT	Discrete LF CI cutoff	n = 8 ears, 6 participants • Significant effect of cutoff: χ²₍₇₎ = 24.8, p < 0.001 • 813 Hz < 188 Hz, 313 Hz, 438 Hz, & 563 Hz • 688 Hz < 188 Hz, 313 Hz, 438 Hz, & 563 Hz	n = 8 ears, 6 participants • Significant effect of cutoff: F_(5,7) = 3.9, p = 0.019 • 688 Hz < 438 Hz • 188 Hz < 438 Hz
Speech understanding (dB SNR), adaptive SRT	Relative LF CI cutoff	n = 8 ears, 6 participants • Significant effect of cutoff: χ²₍₇₎ = 22.8, p < 0.001 • Gap (Rx+125 Hz) < full (188 Hz), 438 Hz, and 70 dB HL	n = 8 ears, 6 participants • Significant effect of cutoff: F_(5,7) = 3.3, p = 0.015 • Gap (Rx+125 Hz) < 438 Hz