Table 2

 Change in radiographic scores

Conventional DMARDs (n = 143)8 mg/kg Tocilizumab (n = 157)
*p<0.05, †p<0.01, ‡p<0.001.
P values were analysed with a rank transformed analysis of covariance (ANCOVA) on the change scores that included factors for baseline score and baseline disease duration. DMARDs, disease-modifying antirheumatic drugs; Tocilizumab, humanised anti-interleukin-6 receptor antibody; 95% CI, 95% confidence interval; IQR, interquartile range.
Week 28
    Total Sharp score
        Mean (95% CI)4.5 (3.1 to 6.0)1.9 (1.2 to 2.6)*
        Median (IQR)1.0 (0.0 to 5.0)0.5 (0.0 to 2.0)
    Erosion score
        Mean (95% CI)2.4 (1.6 to 3.2)0.8 (0.4 to 1.2)†
        Median (IQR)0.5 (0.0 to 2.5)0.0 (0.0 to 1.0)
    Joint space narrowing score
        Mean (95% CI)2.2 (1.4 to 2.9)1.1 (0.7 to 1.6)
        Median (IQR)0.0 (0.0 to 2.0)0.0 (0.0 to 1.0)
Week 52
    Total Sharp score
        Mean (95% CI)6.1 (4.2 to 8.0)2.3 (1.5 to 3.2)†
        Median (IQR)2.5 (0.0 to 7.0)0.5 (0.0 to 3.0)
    Erosion score
        Mean (95% CI)3.2 (2.1 to 4.3)0.9 (0.3 to 1.4)‡
        Median (IQR)1.0 (0.0 to 3.5)0.0 (0.0 to 1.0)
    Joint space narrowing score
        Mean (95% CI)2.9 (2.0 to 3.8)1.5 (0.9 to 2.1)*
        Median (IQR)1.0 (0.0 to 4.0)0.0 (0.0 to 1.7)