Table 4.

Internal consistency of the subscales and regression coefficients of the BOCC-tool

Subscale	Internal consistency		Regression Coefficients for predicting grade (Beta β)
	Cronbach’s alpha α	Mean inter-item correlation	In OSCE (n = 959)	In 4th year medical students (n = 324)
Communication skills (n = 1160)	.80	.41	.206*	.329*
Problem influence (n = 1234)	.49	.24	.201*	.075
Integration skills (n = 1169))	.42	.20	.246*	.073
Specific History (n = 1215)	.70	.33	.015	.101
Problem clarification (n = 1263)	.49	.18	.259*	.202*
			R Square .351	R Square .351

* p < .001