Table 2.

Primary Outcome of the Intervention Group (CST-behav): Observed communication performance of students evaluated by blinded raters

	Pre (SD)	Post (SD)	Pa	ESb
Global rating	1.56 (1.21)	2.59 (0.92)	0.000	0.94
Start of conversation	2.06 (1.10)	1.79 (0.77)	1.93	−0.28
Patient’s perception	2.56 (0.96)	2.97 (0.72)	0.063	0.48
Structure of conversation	1.96 (1.28)	2.65 (0.92)	0.009	0.61
Patient’s emotions	1.66 (1.32)	3.10 (0.89)	0.000	1.26
End of conversation	1.52 (1.02)	2.34 (0.94)	0.003	0.82
General communication skills	2.28 (0.79)	2.75 (0.72)	0.007	0.62

Mean values incl. SD and p-value of each checklist domain on 5 point Likert scale, before and after training plus the effect sizes (ES)

^a t-test for dependent variables

^b Effect sizes by Hedges g