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. 2009 May 1;91(5):1136–1142. doi: 10.2106/JBJS.H.00831

TABLE IV.

Relative Risk for Early Rotator Cuff Disease in Relatives of 652 Individuals Diagnosed with Rotator Cuff Disease Before the Age of Forty Years

Relationship No. of Relatives (Patients/Controls) No. of Affected (Patients/Controls) P Value Relative Risk 95% Confidence Interval
First degree 3714/19,299 6/18 0.2614 1.73 (0.69, 4.37)
Second degree 8268/41,624 8/11 0.0076 3.66 (1.47, 9.11)
Third degree 21,642/104,306 18/48 0.0479 1.81 (1.05, 3.11)