Table 3

 Univariate analysis of the hazard ratios (HR) and 95% confidence interval (CI) associated with the patient characteristics in the two groups

HR95% CILRT p value
CD, Crohn’s disease; CDAI, Crohn’s disease activity index; LRT, likelihood ratio test; UC, ulcerative colitis; UCAI, ulcerative colitis activity index.
CD patients
    Calprotectin (μg/g)0.068
        ⩽1501
        >1504.01[0.90–17.82]
    Sex0.733
        F1
        M0.84[0.30–2.35]
    Smoking0.126
        Ex1
        No0.28[0.06–1.32]
        Yes0.76[0.15–3.96]
    Extent0.122
        Colitis1
        Ileitis0.26[0.79–0.89]
        Ileocolitis0.52[0.12–2.36]
    CDAI1.01[1.00–1.02]0.027
    Age at onset (y)1.00[0.96–1.05]0.995
    Previous quiescent phase (months)0.92[0.81–1.06]0.228
UC patients
    Calprotectin (μg/g)0.000
        ⩽1501
        >15012.82[2.93–56.05]
    Sex0.788
        F1
        M0.87[0.33–2.30]
    Smoking0.411
        Ex1
        No0.54[0.21–1.40]
        Yes0.97[0.21–4.52]
    Extent0.550
        Pancolitis1
        Left sided colitis0.63[0.15–2.64]
        Proctosigmoiditis0.54[0.18–1.56]
    UCAI1.21[0.90–1.64]0.224
    Age at onset (y)0.99[0.95–1.02]0.464
    Previous quiescent phase (months)0.96[0.85–1.08]0.464