Adapting the patient and physician versions of the 9-item shared decision making questionnaire for other healthcare providers in Japan

Table 2 Descriptive statistics for SDM-C-patient (n = 202)

	Median	Mean	SD	Minimum	Max	Corrected item-total correlation coefficient
Item 1	8.89	8.35	2.26	2.22	11.11	0.47
Item 2	8.89	8.36	2.15	2.22	11.11	0.51
Item 3	8.89	8.50	2.24	2.22	11.11	0.45
Item 4	6.67	6.31	2.41	0.00	11.11	0.52
Item 5	8.89	8.36	2.16	0.00	11.11	0.57
Item 6	8.89	9.14	1.94	2.22	11.11	0.40
Item 7	6.67	6.85	2.43	0.00	11.11	0.56
Item 8	8.89	8.31	2.26	0.00	11.11	0.62
Item 9	8.89	8.34	2.23	0.00	11.11	0.55