| | Characteristics |
Mean BMI at diagnosis
Mean BMI kg/m² (SE/range) |
% BMI loss prior to diagnosis
Mean BMI kg/m² (SE/range) | | Ulcerative colitis | Crohn’s disease | Ulcerative colitis | Crohn’s disease |
| | All patients | 23.97 (0.33, 37.40) | 23.68 (0.44, 43.10) | 7.63 (0.59, 57.71) | 9.76 (0.71, 57.99)
= | | Age at diagnosis | | | | | | A1 | 17.51 (1.42, 9.68) | 16.28 (1.05, 14.72) | 15.66 (7.10, 46.18) | 14.25 (2.72, 36.98) | | A2 | 22.74 (0.37, 32.26) | 22.72 (0.52, 40.37) | 8.50 (0.78, 56.36) | 10.95 (1.00, 57.99) | | A3 | 26.10 (0.53, 32.08) | 27.03 (0.73, 28.75) | 5.89 (0.80, 36.28) | 6.58 (0.91, 40.27) | | Sex | | | | | | Male | 24.20 (0.43, 32.26) | 23.07 (0.53, 29.71) | 7.45 (0.89, 57.71) | 9.22 (1.02, 56.02) | | Female | 23.76 (0.49, 35.26) | 24.27 (0.70, 40.37) | 7.79 (0.78, 44.84) | 10.26 (1.00, 55.42) | | Smoking | | | | | | Yes | 22.75 (1.03, 23.31) | 23.54 (0.76, 32.45) | 7.45 (2.20, 44.78) | 11.61 (1.70, 53.13) | | No | 24.09 (0.34, 37.40) | 23.72 (0.53, 43.10) | 7.64 (0.61, 57.71) | 9.18 (0.77, 48.51) | | Appendectomy | | | | | | Positive | 26.35 (1.24, 23.60) | 24.68 (0.92, 20.49) | 7.46 (2.30, 46.20) | 7.46 (1.73, 43.17) | | Negative | 24.15 (0.43, 37.40) | 23.29 (0.61, 43.10) | 7.05 (0.74, 56.36) | 10.98 (0.95, 55.42) | | Family history of IBD | | | | | | Positive | 22.26 (0.65, 26.32) | 23.99 (0.95, 24.83) | 9.91 (1.58, 48.81) | 9.21 (1.32, 33.68) | | Negative | 24.40 (0.37, 35.71) | 23.60 (0.50, 43.10) | 7.05 (0.61, 53.66) | 9.89 (0.82, 57.99) | | Family history of CRC | | | | | | Positive | 21.56 (0.55, 12.42) | 24.14 (1.83, 36.93) | 8.28 (2.05, 50.44) | 14.49 (2.81, 37.11) | | Negative | 24.40 (0.38, 37.40) | 23.35 (0.46, 41.54) | 7.45 (0.64, 57.71) | 9.90 (0.79, 57.99) | | History of IBD surgery | | | | | | Positive | 20.95 (0.92, 1.24) | 22.27 (0.67, 41.54) | 9.61 (2.39, 29.63) | 11.94 (1.33, 53.13) | | Negative | 24.11 (0.39, 35.71) | 24.70 (0.64, 41.88) | 7.55 (0.73, 55.87) | 8.44 (0.89, 46.81) | | Disease location | | | | | | Ileal | N/A | 23.86 (1.07, 26.46) | N/A | 11.31 (1.99, 36.07) | | Ileocolonic | N/A | 23.35 (0.61, 43.10) | N/A | 10.46 (1.00, 57.99) | | Colonic | N/A | 24.27 (1.03, 33.63) | N/A | 8.77 (1.62, 55.56) | | Behaviour | | | | | | Inflammatory | N/A | 23.88 (0.59, 43.10) | N/A | 8.92 (0.88, 48.05) | | Stenotic | N/A | 24.01 (1.05, 26.49) | N/A | 9.75 (1.82, 43.59) | | Fistulating | N/A | 23.00 (1.01, 37.01) | N/A | 12.44 (1.84, 53.13) |
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