Table 2.

Means, SEs, and between-group effect sizes (Cohen d) from baseline to 1-year follow-up.

	Baseline		One-year follow-up
	Transdiagnostic iCBTa, mean (SE)	TAUb, mean (SE)	Transdiagnostic iCBT, mean (SE)	TAU, mean (SE)	Cohen d (95% CI)
BDI-IIc	23.4 (1.4)	24.1 (1.4)	13.4 (1.7)	18.3 (1.6)	0.43 (0.02 to 0.85)
BAId	20.0 (1.3)	22.3 (1.2)	13.1 (1.6)	16.9 (1.6)	0.34 (–0.07 to 0.75)
EQ-5D-3L	55.8 (2.0)	53.5 (1.9)	69.6 (2.6)	59.7 (2.5)	–0.57 (–0.98 to –0.15)
BISe scale	23.3 (0.3)	23.4 (0.3)	21.2 (0.4)	23.6 (0.4)	0.87 (–1.30 to –0.45)
BASf scale	35.3 (0.6)	35.8 (0.6)	36.0 (0.8)	34.8 (0.8)	0.22 (–0.19 to 0.63)

^aiCBT: internet-delivered cognitive behavioral therapy.

^bTAU: treatment as usual.

^cBDI-II: Beck Depression Inventory, Second Edition.

^dBAI: Beck Anxiety Inventory.

^eBIS: behavioral inhibition system.

^fBAS: behavioral activation system.