Table 2.

Changes in clinical variables before and after CBT-I in PI (n = 14).

	Before CBT-I Mean ± SD	After CBT-I Mean ± SD	t	p-value
ISI*	15.9 ± 9.0	7.0 ± 5.2	2.854	0.014
PSQI**	13.4 ± 4.0	6.9 ± 2.9	5.559	<0.001
DBAS**	95.1 ± 19.8	52.1 ± 32.4	6.690	<0.001
BDI*	9.5 ± 8.4	5.6 ± 7.8	2.177	0.049
Sleep diary
TST (hr)**	5.5 ± 1.2	6.4 ± 0.8	−4.493	0.001
SL (min)**	39.5 ± 34.6	15.8 ± 15.8	3.701	0.003
WASO (min)*	65.2 ± 54.5	32.6 ± 32.7	2.720	0.019
SE (%)**	76.1 ± 14.1	88.9 ± 9.6	−4.375	0.001