Table 6.

Incremental validity of the Integrative Vitality Scale (compared with the SF-36-VIT).

IV	Step	DV	B	SE	β	t	R 2	ΔR 2	F
K-BDI	Step 1	SF-36-VIT	−1.38	0.11	−0.55	−12.25***	0.30	0.30	150.13***
	Step 2	SF-36-VIT	−0.79	0.15	−0.28	−4.74***	0.38	0.08	106.51***
		IVS	−0.26	0.04	−0.39	−6.65***
FS	Step 1	SF-36-VIT	−1.36	0.09	−0.62	−14.80***	0.39	0.39	219.06***
	Step 2	SF-36-VIT	−0.95	0.12	−0.43	−7.67***	0.43	0.04	127.89***
		IVS	−0.16	0.03	−0.27	−4.79***
COMOSWB	Step 1	SF-36-VIT	1.78	0.11	0.67	16.69***	0.44	0.44	278.55***
	Step 2	SF-36-VIT	0.76	0.13	0.29	6.06***	0.60	0.16	262.21***
		IVS	0.39	0.03	0.55	11.70***

IV, independent variable; DV, dependent variable; IVS, Integrative Vitality Scale; SF-36-VIT, Short Form 36 Health Survey – Vitality subdomain; K-BDI, Korean version of the Beck Depression Inventory; FS, Fatigue Scale; COMOSWB, Concise Measure of Subjective Well-Being. ***p < 0.001.