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Table 1 Demographic characteristics of UC by age

From: Elderly-onset vs adult-onset ulcerative colitis: a different natural history?

CharacteristicsElderly (≥ 65 yrs)
N = 94
Adults (40–64 yrs)
N = 94
p value
Median age at diagnosis (yrs, SD)71.5 (5.0)50.1 (6.7)< 0.0005
Female N (%)43 (45.7)43 (45.7)0.883
Family history for IBD N (%)8 (9.4)7 (8.4)0.824
Smokers N (%)7 (8.5)13 (15.3) 
Ex smokers N (%)34 (41.5)41 (48.2)0.150
Non smokers N (%)41 (50.0)32 (36.5) 
Follow up lenght, yrs. mean (SD)8.1 (15.6)5.7 (13.2)0.1155
Time from symptoms onset to diagnosis, yrs., mean SD5.8 (4.6)6.2 (4.7)0.5872
Comorbidity Index (CIRS)3.78 (2.02)1.57 (0.87)0.0005