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. 2008 Sep 1;90(9):1830–1838. doi: 10.2106/JBJS.G.00840

TABLE II.

Overall Extent of Informed Decision-Making About Common Surgical Procedures

IDM-18 Score
% of Cases Meeting IDM-Min
Surgical Procedure Mean (Range) Median
Knee replacement 6.6 (1-15) 6.7 57
Hip replacement 6.8 (1-13) 7.0 67
Shoulder, wrist, other 5.4 (0-12) 4.9 55
All surgery 5.9 (0-15) 5.7 57