Table 3.

Mann-Whitney test of mean SNR values between groups on days 3, 4 and 7

Group	Day
	Day 3 Median (IQR)	p	Day 4 Median (IQR)	p	Day 7 Median (IQR)	p
1 2	3,67 (1,30)	0,001	2,17 (1,71)	<0,001	2,08 (1,42)	<0,001
	6,17 (4,71)		4,83 (2,88)		4,09 (2,42)
1 3	3,67 (1,30)	0,022	2,17 (1,71)	0,006	2,08 (1,42)	0,002
	4,17 (2,09)		3,17 (1,71)		3,25 (3,42)
2 3	6,17 (4,71)	0,057	4,83 (2,88)	0,009	4,09 (2,42)	0,366
	4,17 (2,09)		3,17 (1,71)		3,25 (3,42)

*IQR = interquartile range