Table 4.

Comparative analysis of SIR scores between the two groups (point, x¯ ± s).

Groups	Pre-surgery	1 week post-surgery	2 weeks post-surgery	1 month post-surgery	3 months post-surgery	6 months post-surgery	9 months post-surgery	12 months post-surgery
Prelingual deaf group (n = 20)	0.55 ± 0.10	2.03 ± 0.19a	2.06 ± 0.21a	2.37 ± 0.19abc	2.61 ± 0.25abcd	2.93 ± 0.39abcde	3.18 ± 0.41abcde	3.45 ± 0.72abcdef
Control group (n = 20)	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12	4.80 ± 0.12
t	121.677	55.125	50.663	48.359	35.318	20.495	16.959	8.271
p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

Compared with pre-surgery, ^ap < 0.05; Compared with 1 week post-surgery, ^bp < 0.05; Compared with 2 weeks post-surgery, ^cp < 0.05; Compared with 1 month post-surgery, ^dp < 0.05; Compared with 3 months post-surgery, ^ep < 0.05; Compared with 6 months post-surgery, ^fp < 0.05.