Table 6.

Different Cronbach α

	Across-items within a stationa,b)		Across-items over stationsa)		Across-stationsb)
	α	No. of items	α	No. of items	α	No. of stations
CPX	0.75	26	0.83	150	0.47	6
Clinical scale	0.68	20	0.71	116	0.41	6
History taking	0.46	14	0.57	80	0.28	6
Physical examination	0.75	5	0.68	23	0.36	6
Patient education	-	1	0.16	13	0.11	6
PPI scale	0.82	6	0.85	34	0.38	6
OSCE			0.75	88	0.40	6
Overall			0.86	238	0.58	12

Clinical scale was checklist scale, PPI scale was Likert scale.

CPX: Clinical performance examination, PPI: Patient-physician interaction, OSCE: Objective structured clinical examination.

^a)Chest pain case,

^b)Day 1 on 2013.