Table 2 Comparison of the sleep parameters recorded at baseline and after CBT-I

ISI-J score

16.2 ± 5.0

10.5 ± 5.9

< 0.01**

PSQI-J score

9.8 ± 3.6

7.3 ± 3.1

< 0.01**

J-SDS score

42.4 ± 8.4

41.1 ± 8.9

0.23

Total sleep time (min)

347.2 ± 86.5

362.8 ± 77.9

0.08

Sleep onset latency (min)

42.6 ± 33.7

30.6 ± 27.4

< 0.01**

Wake time after sleep onset (min)

31.2 ± 32.1

17.5 ± 24.1

0.01*

Sleep efficiency (%)

73.0 ± 13.4

82.0 ± 14.0

< 0.01**

Dose of GABAA-RA

1.10 ± 0.74

0.84 ± 0.65

< 0.01**