TABLE 1.

Group summary statistics in terms of mean, standard deviation (SD), and the lower and upper range of the 95% confidence interval (CI 95%) for performance on the forward digit span (FDS) test and speech-in-noise perception (SiN) test in each listening condition and on average.

Test	Assessment point	Control group			Musical training group
		Mean (dB)	SD	CI 95%	Mean (dB)	SD	CI 95%
				[lower, upper]			[lower, upper]
FDS	T1	6.4	2.1	[5.2, 7.6]	7.9	2.0	[7.0, 8.7]
	T2	7.1	1.9	[6.1, 8.2]	8.2	1.5	[7.6, 8.8]
SiN: Collocated ∗ SSN	T1	−3.1	3.9	[−5.3, −0.9]	−3.1	4.7	[−5.0, −1.2]
	T2	−4.1	6.2	[−7.6, −0.7]	−5.6	2.8	[−6.7, −4.4]
SiN: Separated ∗ SSN	T1	−4.7	4.1	[−7.0, −2.4]	−3.8	5.3	[−5.9, −1.6]
	T2	−5.5	3.3	[−7.3, −3.7]	−7.1	2.5	[−8.1, −6.1]
SiN: Collocated ∗ single talker	T1	4.6	3.7	[2.5, 6.6]	5.2	3.6	[3.8, 6.7]
	T2	1.8	2.4	[0.5, 3.1]	1.8	3.8	[0.3, 3.4]
SiN: Separated ∗ single talker	T1	0.9	5.0	[−1.8, 3.7]	−0.7	5.5	[−3.0, 1.5]
	T2	−4.4	4.0	[−6.7, −2.2]	−4.4	3.6	[−5.9, −3.0]
SiN: Average	T1	−0.6	2.5	[−2.0, 0.8]	−0.6	3.3	[−1.9, 0.8]
	T2	−3.1	2.5	[−4.5, −1.7]	−3.8	1.9	[−4.6, −3.1]