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Table 1 Comparing level of risk for AmI and famX (X) syndrome using Family History Scoring

From: Family history scoring system shows Familial Colorectal Cancer Type X syndrome individuals and Amsterdam I individuals have comparable risk for developing colon cancer

   AP AP/AS AP/US AP/AS Child AP/US Child UP UP/AS UP/US UP/AS Child UP/US Child Total Median
Median AmI 17 18 17 12 5 12 16 12 9 4 12
  X 14 17 14 14 4 12 15 12 N/A N/A 14
Mean AmI 18.0 21.0 17.3 13.1 5.2 12.4 15.2 12.5 9.0 4.4 12.8
  X 13.5 17.0 13.5 14.0 4.0 11.3 15.0 11.3 N/A N/A 13.5
Range AmI 9-42 14-44 9-30 9-21 4-13 6-19 10-19 6-21 6-12 2-12  
  X 11-15 17 11-15 14 4 7-15 15 7-15 N/A N/A  
STDEV AmI 6.3 7.0 4.7 3.4 2.0 4.4 3.5 4.7 2.9 3.4 4.0
  X 1.9 N/A 1.9 N/A 0.0 4.0 N/A 4.0 N/A N/A 1.9