Table 2.

Outcome Measures

Variable	Median (range)
Consonant nucleus consonant word score (CNC):
Baseline (n=20)	5% (0 – 22%)
3 months (n=21)	52% (3 – 84%)
6 months (n=22)	53% (2 – 90%)
12 months (n=16)	55% (20 – 85%)
Greater than 12 months (n=9)	74% (22 – 88%)
AZBio sentence score in quiet:
Baseline (n=16)	2% (0 – 50%)
3 months (n=20)	62% (0 – 99%)
6 months (n=20)	71% (3 – 99%)
12 months (n=16)	64% (12 – 91%)
Greater than 12 months (n=9)	77% (29 – 92%)
Scalar location of electrode (n=20):
All scala tympani	11 (50%)
Scala tympani/scala media	7 (31.8%)
Scala tympani and scala vestibuli	2 (9.1%)
ECochG Total Response:
Intraoperative (n=22)	14.97 dB re: 1uV (−13.98 – 51.16)
1 month (n=13)	2.88 dB re: 1uV (−13.98 – 23.56)
3 months (n=12)	7.41 dB re: 1uV (−13.98 – 26.05)
6 months (n=17)	6.39 dB re: 1uV (−13.98 – 44.57)
12 months (n=12)	1.58 dB re: 1uV (−13.98 – 23.58)
Greater than 12 months (n=6)	1.49 dB re: 1uV (−13.98 – 23.86)
Residual hearing at 1 month (n=20) †	7 (31.8%)
Residual hearing pure-tone average (125 Hz – 2000 Hz)	87 dB HL (63 – 106)
Clinical outlier (n=22) †	2 (9.1%)

All pre-operative speech testing scores reported above reflect the pre-implant ear in the best aided condition. Speech scores were obtained in aided cochlear implant only condition with contralateral ear plugged and muffed.

^†Numbers (percentage) are used for reporting distribution of categorical-level characteristics.