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Table 2 Response criteria: LS mean between-treatment difference for canakinumab vs placebo at week 12

From: Efficacy and safety of the human anti-IL-1beta monoclonal antibody canakinumab in rheumatoid arthritis: results of a 12-week, phase II, dose-finding study

Variable

Canakinumab 150 mg SC q4wk, n = 69

Canakinumab 300 mg SC q2wk, n = 64

Canakinumab 300 mg SC q2wk + 600 mg IV loading dose, n = 71

Number of tender joints

   

Baseline, mean (SD)

15.6 (6.00)

15.2 (6.00)

16.8 (6.20)

Difference vs. placebo in LS mean change (95% CI)

-1.7 (-4.1, 0.6)

-0.3 (-2.7, 2.2)

0.2 (-2.1, 2.6)

p-value

0.152

0.837

0.839

Number of swollen joints

   

Baseline, mean (SD)

11.8 (4.29)

11.9 (4.39)

12.4 (4.95)

Difference vs. placebo in LS mean change (95% CI)

-1.8 (-3.6, -0.1)

-1.9 (-3.7, -0.1)

-1.2 (-3.0, 0.6)

p-value

0.040*

0.039*

0.178

RA pain intensity, VAS in mm

Baseline, mean (SD)

61.6 (18.00)

59.7 (19.82)

65.0 (16.21)

Difference vs. placebo in LS mean change (95% CI)

-6.5 (-14.0, 1.1)

-4.7 (-12.3, 3.0)

0.2 (-2.1, 2.6)

p-value

0.091

0.233

0.336

Physicians' global assessment of disease activity, VAS in mm

Baseline, mean (SD)

65.4 (15.14)

60.1 (17.46)

64.7 (12.93)

Difference vs. placebo in LS mean change (95% CI)

-8.8 (-16.6, -0.9)

-6.4 (-14.4, 1.7)

-4.0 (-11.8, 3.8)

p-value

0.029*

0.121

0.316

Patients' global assessment of disease activity, VAS in mm

Baseline, mean (SD)

63.4 (16.97)

63.6 (20.67)

67.8 (15.94)

Difference vs. placebo in LS mean change (95% CI)

-7.5 (-14.7, -0.3)

-7.4(-14.7, 0.0)

-4.5 (-11.7, 2.8)

p-value

0.041*

0.049*

0.226

hsCRP, mg/L

   

Baseline, mean (SD)

16.62 (18.735)

16.60 (17.050)

6.59 (20.785)

Difference vs. placebo in LS mean change (95% CI)

-7.3 (-12.5, -2.1)

-2.7 (-8.1, 2.6)

-4.9 (-10.1, 0.3)

p-value

0.007*

0.313

0.065

  1. *Statistical significance (2-sided) vs. placebo. Statistical model is analysis of covariance adjusting for treatment and center with baseline value as a covariate
  2. Abbreviations: CI, confidence interval; hsCRP, high-sensitivity C-reactive protein; IV, intravenous; LS mean, least-squares mean; q2wk, every 2 weeks; q4wk, every 4 weeks; SC, subcutaneous; SD, standard deviation; VAS, visual analog scale