Table 5.

Within- and between-group effect sizes and 95% CIs.

Measures				TIBP+PAa, d (95% CI)		TIBPb, d (95% CI)		WLc, d (95% CI)		TIBP+PA versus TIBP, d (95% CI)		TIBP+PA versus WL, d (95% CI)		TIBP versus WL, d (95% CI)
				Pre-post		Pre-post		Pre-post		Post-Td		Post-T		Post-T
Primary outcomes
	BDI-IIe		1.42 (1.09 to 1.76)		1.19 (0.90 to 1.48)		0.02 (−0.13 to 0.16)		−0.10 (−0.51 to 0.31)		−1.05 (−1.46 to −0.63)		−1.18 (−1.61 to −0.76)
	BAIf		0.91 (0.64 to 1.18)		0.63 (0.38 to 0.87)		0.02 (−0.12 to 0.15)		0.05 (−0.39 to 0.49)		−0.68 (−1.10 to − 0.26)		−0.63 (−1.07 to −0.20)
	Positive Affect subscale of the Positive and Negative Affect Schedule		−1.27 (−1.58 to −0.95)		−0.69 (−0.92 to −0.45)		−0.01 (−0.22 to 0.20)		−0.25 (−0.66 to 0.17)		0.90 (0.49 to 1.31)		0.74 (0.33 to 1.15)
	Negative Affect subscale of the Positive and Negative Affect Schedule		1.26 (0.94 to 1.57)		1.28 (0.96 to 1.60)		−0.04 (−0.22 to 0.14)		−0.01 (−0.42 to 0.40)		−0.91(−1.32 to −0.50)		−0.99 (−1.41 to −0.57)
Secondary outcomes
	Personality measures
		Neuroticism subscale of the NEO FFIg	0.78 (0.51 to 1.05)		0.73 (0.50 to 0.96)		0.04 (−0.22 to 0.20)		−0.12 (−0.54 to 0.29)		−0.47 (−0.87 to −0.08)		0.61 (−1.01 to −0.21)
		Extraversion subscale of the NEO FFI	0.65 (−0.88 to −0.42)		0.30 (−0.45 to −0.14)		0.22 (0.07 to 0.37)		−0.01 (−0.42 to 0.40)		0.48 (0.08 to 0.88)		0.46 (0.06 to 0.86)
	Quality of life
		EuroQoL-5D-3L questionnaire	0.70 (−0.97 to −0.43)		0.53 (−0.80 to −0.25)		0.04 (−0.21 to 0.14)		−0.25 (−0.70 to 0.19)		0.86 (0.44 to 1.29)		0.60 (0.17 to 1.04)

^aTIBP+PA: transdiagnostic internet-based protocol+positive affect component.

^bTIBP: transdiagnostic internet-based protocol.

^cWL: waiting list.

^dPost-T: posttreatment.

^eBDI-II: Beck Depression Inventory-II.

^fBAI: Beck Anxiety Inventory.

^gNEO FFI: NEO Five Factor Inventory.