Table 11:
Speech Perception in Noise—Children
| Author, Year | Test Measures | UCI and BCI | P Value |
|---|---|---|---|
| Cullington et al, 201783 | S0N0a | No significant difference in combined ATT and BKB results between UCI and BCIb | NS |
| Peters et al, 200786 | S0N0 S0NCI1 |
At 9 months, BCI performed significantly better than UCI on CRISP, regardless of age, as follows: | |
| S0NCI2 | S0N0: 6.8% | .008 | |
| S0NCI1: 13.2% | < .001 | ||
| S0NCI2: 6.8% | < .02 | ||
| Reeder et al, 201787 | SNRc,d (dB) | Significantly lower SNR in BKB-SIN and R-space for BCI vs. either UCIb | < .05 |
| Scherf et al, 200788; Scherf et al, 200989 | % correct wordse | < 6 years old | |
| Higher scores comparing BCI vs. either cochlear implantb | 18 months: .028 (CI1) | ||
| 18 months: .043 (CI2) | |||
| 24 months: NS (Cl1, CI2) | |||
| 36 months: .042 (CI1) | |||
| 36 months: .043 (Cl2) | |||
| ≥ 6 years old No difference in scores comparing BCI vs. either cochlear implantb |
18 months: NS (CI1, CI2) | ||
| 24 months: .001 (Cl1) | |||
| 24 months: .002 (Cl2) | |||
| 36 months: .002 (Cl1) | |||
| 36 months: .002 (Cl2) | |||
| Sparreboom et al, 201192 | S0NCI1 SNR (dB SPL)c,d |
Own control Significantly lower SNR comparing BCI vs. first or second cochlear implantb |
6 months: < .05 |
| 12 months: < .05 | |||
| 24 months: < .05 | |||
|
Separate UCI control group Significantly lower SNR comparing BCI vs. UCI at |
12 months: .42 | ||
| 24 months but not at 12 monthsb | 24 months: < .01 | ||
| Sparreboom et al, 201494 | % phoneme score | BCI obtained an average 9.5% (95% CI 3.5%–15.4%) higher phoneme score than UCI at 5-year follow-up | NR |
Abbreviations: ATT, Automated Toy Discrimination Test; BCI, bilateral cochlear implantation; BKB, Bamford-Kowal Bench; BKB-SIN, Bamford-Kowal Bench Speech in Noise; CI1, first cochlear implant, CI2, second cochlear implant; CRISP, Children's Realistic Intelligibility and Speech Perception test; NR, not reported; NS, not significant; R-space, random-space; S0N0, speech and noise from the front; S0NCI1, speech from the front and noise from first cochlear implant side; S0NCI2, speech from the front and noise from second cochlear implant side; SNR, signal-to-noise ratio; SPL, sound pressure level; SRT, speech reception threshold; UCI, unilateral cochlear implantation.
Only children who scored a speech perception threshold of 55 dB or better in quiet proceeded to noise testing.
Results presented in figures. Numeric data unavailable.
A lower SNR indicates better performance.
Signal-to-noise ratio was calculated by subtracting the fixed noise level of 60 dB SPL from the obtained SRT.
Testing was not done before 18 months of second cochlear implant use because of the difficult nature of the task.