Table 3.

Individual results on SLA and SRT, aided and unaided.

Subject ID	AC PTA4 (dB HL)a	SLA unaided (EI)	SLA aided (EI)	SLA benefit (EI)	SRT unaided (dB)	SRT aided (dB)	SRT benefit (dB)
1	65	0.410	0.330	−0.080	−5.1	−9.1	−4.0
2	65	0.520	0.340	−0.180b	−8.6	−7.3	1.3
3	65	—	—	—	−7.4	−8.5	−0.9
4	65	0.470	0.360	−0.110	−9.7	−6.7	3.0
5	66	—	—	—	−5.4	−0.3	4.1
6	65	0.630	0.360	−0.270b	—	—	—
7	61	0.330	0.330	0.000	−9.5	−10.2	−2.3
8	63	0.360	0.450	0.090	−10.8	−12.7	−1.9
9	74	0.870	0.420	−0.450b	−0.3	−6.4	−5.9
10	53	0.360	0.280	−0.080	−7.9	−5.7	2.2
11	64	0.377	0.423	0.046	−12.1	−11.8	0.3
Max	74	0.87	0.45	−0.450	−12.1	−12.7	−5.9
Min	53	0.33	0.28	0.090	−0.3	−0.3	4.1
Mean ± SD	64.2 ± 4.9	0.48 ± 0.17	0.37 ± 0.05	−0.11 ± 0.17	−7.7 ± 3.4	−7.9 ± 3.5	−0.41 ± −3.18

A more negative SRT value indicates a better performance. There was no significant benefit from amplification on SLA or SRT on a group level (p > 0.05, Wilcoxon matched pairs). Three individuals showed significant intra-individual change in SLA when comparing unaided to aided scores (a change of ± 0.12 being statistically significant in infants (p < 0.05).

^a Unaided air conduction thresholds of the atretic ear.

^b Significant intra-individual change p < 0.05.