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Table 2 Summary of demographic statistics for the CONOR database stratified according to their ulcerative colitis (UC) status

From: Can temperature explain the latitudinal gradient of ulcerative colitis? Cohort of Norway

   UC Non-UC p-value
Participants   370 (0.2%) 80152 (99.8%)  
Age Mean (SD) 50.4 (14.0) 51.8 (12.9) 0.113
Gender Males (%) 57% 50% 0.013
  Females (%) 43% 50%  
Education Mean (SD) 12.0 (3.7) 12.4 (3.8) 0.094
Smoking Daily smoker (%) 23% 29% 0.007
  Not smoker (%) 77% 71%  
  1. The p-values in the last column result from statistical tests of equality between the two groups.