Should I undergo surgery for my rotator cuff tear?

Here is a decision aid developed by AHRQ http://www.effectivehealthcare.ahrq.gov/index.cfm/search-for-guides-reviews-and-reports/?pageaction=displayproduct&productID=545 about decisions concerning rotator cuff injuries and evaluated by the OHRI http://decisionaid.ohri.ca/Azsumm.php?ID=1463