Table 3.

Mean, standard deviation and reliability values for the BDI-II total scale and for Model 2 and Model 3 scales in both PC and non-PC samples. Differences between populations were tested using independent samples t-test (p-values). Reliability values were calculated using Cronbach's alpha (α).

	PC (n = 210)			Non-PC (n = 376)
	Range	Mean (SD)	α	Range	Mean (SD)	α	p-value
Model 1
BDI total score	0–56	20.2 (11.2)	0.91	1–55	24.4 (12.2)	0.91	<0.001
Model 2 (Beck et al., 1996)
Cognitive2	0–23	5.8 (5.0)	0.84	0–24	8.3 (5.8)	0.86	<0.001
Somatic-Affective	0–34	14.4 (7.1)	0.84	0–34	16.2 (7.4)	0.84	0.01
Model 3 (Beck et al., 2002)
Cognitive3	0–19	4.7 (4.4)	0.84	0–20	6.9 (4.9)	0.84	<0.001
Affective	0–14	4.4 (3.3)	0.83	0–15	5.6 (3.5)	0.83	<0.001
Somatic	0–25	11.0 (5.2)	0.79	0–26	11.9 (5.4)	0.79	0.1

Note. Non-PC=Patients without a cancer diagnosis; PC= Patients with a cancer diagnosis.