Table 5.

Comparison of changes in the secondary outcome between intervention groups and control group.

Secondary outcomes and assigned group			Control group	Estimation (SE)	Adjusted P valuea	95% CI (adjusted)
PSQIb
	Week 8
		ICBTc	WLCd	−1.09 (0.38)	.02	−2.07 to −0.12
		TGTe	WLC	−0.35 (0.36)	.81	−1.27 to 0.57
SOLf
	Week 4
		ICBT	WLC	−11.73 (3.40)	.003	−20.36 to −3.10
		TGT	WLC	−5.88 (3.30)	.27	−14.24 to 2.48
	Week 8
		ICBT	WLC	−7.74(3.45)	.10	−16.48 to 1.01
		TGT	WLC	−5.00 (3.29)	.42	−13.34 to 3.34
TSTg
	Week 4
		ICBT	WLC	33.07 (7.07)	<.001	15.17 to 50.98
		TGT	WLC	20.70 (6.79)	.01	3.51 to 37.89
	Week 8
		ICBT	WLC	17.50 (7.15)	.06	−0.63 to 35.63
		TGT	WLC	0.02 (6.77)	.99	−17.13 to 17.17
Sleep efficiency
	Week 4
		ICBT	WLC	2.94 (1.83)	.36	−1.70 to 7.59
		TGT	WLC	3.47 (1.76)	.18	−1.00 to 7.94
	Week 8
		ICBT	WLC	4.53 (1.85)	.06	−0.18 to 9.25
		TGT	WLC	1.57 (1.77)	.85	−2.92 to 6.07
AISh
	Week 4
		ICBT	WLC	−1.62 (0.48)	.004	−2.85 to −0.39
		TGT	WLC	−2.27 (0.47)	<.001	−3.46 to −1.08
	Week 8
		ICBT	WLC	−0.62 (0.49)	.61	−1.87 to 0.63
		TGT	WLC	−0.41 (0.47)	.85	−1.60 to 0.78
GAD-7i
	Week 4
		ICBT	WLC	−0.22 (0.40)	.98	−1.24 to 0.80
		TGT	WLC	−0.82 (0.39)	.14	−1.81 to 0.16
	Week 8
		ICBT	WLC	−0.01 (0.41)	.99	−1.05 to 1.03
		TGT	WLC	0.04 (0.39)	.99	−0.95 to 1.03
PHQ-9j
	Week 4
		ICBT	WLC	−1.70 (0.47)	.001	−2.90 to −0.51
		TGT	WLC	−1.78 (0.45)	<.001	−2.94 to −0.63
	Week 8
		ICBT	WLC	−0.65 (0.48)	.53	−1.86 to 0.56
		TGT	WLC	−0.41 (0.46)	.84	−1.57 to 0.74
CES-Dk
	Week 4
		ICBT	WLC	−0.13 (0.47)	.99	−1.32 to 1.06
		TGT	WLC	0.02 (0.45)	.99	−1.13 to 1.17
	Week 8
		ICBT	WLC	0.98 (0.48)	.16	−0.23 to 2.19
		TGT	WLC	1.03 (0.45)	.10	−0.12 to 2.18

^aDunnett–Hsu.

^bPSQI: Pittsburgh Sleep Quality Index.

^cICBT: internet-based cognitive behavioral therapy.

^dWLC: waiting list control.

^eTGT: Three Good Things.

^fSOL: sleep onset latency.

^gTST: total sleep time.

^hAIS: Athens Insomnia Scale.

ⁱGAD-7: Generalized Anxiety Disorder-7.

^jPHQ-9: Patient Health Questionnaire-9.

^kCES-D: Center for Epidemiologic Studies–Depression Scale.