Table 6. Changes of AALS at different time points

	Mean difference	p
T0-T1	0.22 ± 0.05	0.05
T0-T2	0.27 ± 0.05	0.01
T0-T3	0.30 ± 0.05	0.000
T1-T2	0.05 ± 0.03	0.975
T2-T3	0.02 ± 0.02	1.000