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. 2015 Jan 30;64(11):1783–1789. doi: 10.1136/gutjnl-2014-308653

Table 2.

Mean (SD) of age at diagnosis, for all Surveillance, Epidemiology and End Results (SEER) participants, by stage and other clinical characteristics

All patients Stage IA Stage IB Stage IIA Stage IIB Stage III Stage IV
Race—mean (SD)
 Black 62.7 (11) 61.2 (10) 58.9 (11.3) 63.8 (10.5) 61.8 (10.5) 64.5 (11.3) 63.4 (11.4)
 Other 65.6 (12) 60.3 (11.5) 65.1 (11.4) 64.8 (11.7) 65.7 (11.6) 67.4 (12.1) 66 (12.7)
 White 66.4 (11.2) 65.5 (11) 65.7 (11.9) 67.7 (10.4) 66.1 (10.8) 66.2 (11.5) 66.6 (12)
Sex—mean (SD)
 Female 66.8 (11.5) 64.7 (11.7) 63.9 (12.7) 67.4 (10.7) 66.7 (10.9) 67.1 (11.9) 67.3 (12.3)
 Male 65.2 (11) 64.8 (10.5) 65.9 (11) 66.8 (10.6) 64.7 (10.8) 65.1 (11) 65.1 (11.6)
Location—mean (SD)
 Body 66.2 (11.5) 63.6 (11.1) 65.4 (12.4) 67.8 (10) 65.2 (11.5) 66.2 (11.5) 66.7 (11.6)
 Head 66 (11.1) 65.2 (11.2) 65.5 (11.1) 67.1 (10.4) 65.7 (10.8) 66 (11.4) 66.2 (11.9)
 Tail 65.5 (12.2) 64.3 (10.9) 63.1 (13.4) 66.8 (11.9) 65.8 (11.2) 67.1 (12.8) 65.5 (12.5)
Grade—mean (SD)
 G1 63.9 (12.4) 62.5 (11.3) 61.7 (12.8) 65.9 (11.4) 63.7 (12.1) 66 (11.6) 63.5 (13.7)
 G2 66.3 (10.9) 66.9 (10.3) 65.3 (11.7) 67.3 (10.3) 65.9 (10.6) 66.1 (11.4) 66.6 (11.7)
 G3 66.4 (11.2) 66.2 (11.4) 67.7 (10.7) 67.4 (10.6) 66 (10.8) 66.1 (11.6) 66.4 (11.7)
 G4 65.3 (11.5) 55.6 (9.9) 64.9 (10.6) 66.3 (12.5) 64.5 (11) 66.3 (11.8) 65.8 (11.5)
Size (cm)—mean (SD)
 <2 65.6 (11.2) 64.8 (11.1)  (NA) 66.8 (11.1) 65 (11) 66.4 (11.6) 67.3 (11.8)
 2–4 66.2 (11.1)  (NA) 65.4 (11.2) 67.5 (10.2) 66 (10.9) 66.1 (11.3) 66.1 (12)
 >4 65.7 (11.6)  (NA) 63.4 (13.4) 66.3 (11.2) 65.3 (10.7) 66 (11.8) 65.9 (12)
T Stage—mean (SD)
 T1 65.1 (11.4) 64.8 (11.1)  (NA)  (NA) 64.3 (11.8)  (NA) 67.5 (11.7)
 T2 65.9 (11.9)  (NA) 64.9 (12)  (NA) 64.9 (11.4)  (NA) 67.1 (12.1)
 T3 66.1 (11)  (NA)  (NA) 67.1 (10.6) 65.8 (10.8)  (NA) 65.6 (12.2)
 T4 65.9 (11.5)  (NA)  (NA)  (NA)  (NA) 66.1 (11.5) 65.6 (11.6)
N Stage—mean (SD)
 N0 66.6 (11.4) 64.8 (11.1) 64.9 (12) 67.1 (10.6)  (NA) 66.8 (11.7) 67.3 (11.8)
 N1 65.4 (11.2)  (NA)  (NA)  (NA) 65.7 (10.9) 65.1 (11.3) 64.7 (12.1)