Decision tree for surgery.

<p>Decision tree for surgery.</p

Decision tree for reoperation.

<p>Decision tree for reoperation.</p

Baseline characteristics and comparison between the derivation and the validation cohorts.

<p>Baseline characteristics and comparison between the derivation and the validation cohorts.</p

Performance of risk matrix in derivation and validation cohort for disabling disease and reoperation (% [CI 95%]).

<p>Performance of risk matrix in derivation and validation cohort for disabling disease and reoperation (% [CI 95%]).</p

Decision rules and proportion and confidence intervals of outcomes observed.

<p>Decision rules and proportion and confidence intervals of outcomes observed.</p

Clinical characteristics of patients with Crohn's disease and ulcerative colitis.

<p>Clinical characteristics of patients with Crohn's disease and ulcerative colitis.</p

Association of SNPs in the antioxidant system genes <i>SOD2</i> and <i>GPX1</i> with Crohn’s disease clinical characteristics.

<p>Association of SNPs in the antioxidant system genes <i>SOD2</i> and <i>GPX1</i> with Crohn’s disease clinical characteristics.</p

Genotypic frequencies and overall association of genetic variants in <i>SOD2</i> and <i>GPX1</i> with Crohn’s disease and ulcerative colitis.

<p>Genotypic frequencies and overall association of genetic variants in <i>SOD2</i> and <i>GPX1</i> with Crohn’s disease and ulcerative colitis.</p