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Dear All, In counselling/discussing with patients about their individual risk is confidential interval useful? I feel it is not since no one can really understand the true meaning of " your risk is 30%, but the confidential interval can be as low as 15% and as high as 45% while the actual final outcome is you either get it or not get it". But CI is certainly useful in a group situation to assess the accuracy of your estimation or your treatment efficacy etc. Any comments? Regards and Happy New Year to all of you. Jim Wang Dept of Obstetrics and Gynaecology The Queen Elizabeth Hospital University of Adelaide Woodville South Australia Australia 5011 [log in to unmask] Ph: 61 8 82227695 Fax: 61 8 82227521 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%