Table 4.

Barriers to CBT Homework Completion Scale-Depression Version (Measurement B) Internal Consistency

Statistic	Total 70-item	Modified 65-item	Patient Subscale	Ther/Task Subscale*
Cronbach’s Alpha	.97	.97	.94	.86
Item Mean/SD	.65 ± .49	70±48	2.36±1.57	70±.58
Item Mean Range	.02 –1.57	.04+1.57	.50–5.89	1–1.50
Inter-item Correlation
Mean/SD	.29 ±. 21	.3±.18	.53±.12	60±.14
Inter-item
Correlation Range	.24–.83	−.24 –.89	.24±.89	29–.79
Corrected Item Total
Correlation Range	−.08 –.78	.25– .78	.56–.83	.52–.84
Items Below .2	51, 52, 53, 55, 56	none	none	none
Cronbach’s Alpha
if Item Deleted Range	.97–.97	.97–.97	.93–.94	.81–.86
Scale Mean/SD	45.78 ± 37.09	45.03±36.93	40.13± 31.0	4.90± 7.87

^*Denotes internal consistency done on 24-item concept scale