Table 2

Numbers of PBH that evolved from GdE, new T2 and all active lesions

GdE lesionsNew T2 lesionsActive lesions
Mean* (SE) [n patients evaluable]RR†p ValueMean (SE) [n patients evaluable]RR†p ValueMean* (SE) [n patients evaluable]RR†p Value
PBH at month 12 from lesions at baseline
 Laquinimod 0.6 mg0.5 (0.16) [26]0.530.112NANANANANANA
 Placebo0.9 (0.19) [41]
PBH at month 24 from lesions at baseline
 Laquinimod 0.6 mg0.6 (0.17) [26]0.650.184NANANANANANA
 Placebo1.0 (0.17) [41]
PBH at month 12 from lesions at month 3
 Laquinimod 0.6 mg0.6 (0.25) [14]0.580.2440.40 (0.15) [28]0.520.1430.41 (0.14) [29]0.440.040
 Placebo1.0 (0.22) [37]0.77 (0.20) [42]0.94 (0.20) [45]
PBH at month 24 from lesions at month 3
 Laquinimod 0.6 mg0.6 (0.24) [14]0.550.1930.43 (0.14) [28]0.500.0760.47 (0.14) [29]0.450.025
 Placebo1.1 (0.22) [37]0.86.(0.18) [42]1.03 (0.19) [45]
PBH at month 12 from lesions at months 3 and 6
 Laquinimod 0.6 mg0.6 (0.18) [25]0.450.0220.57 (0.16) [40]0.480.0300.59 (0.15) [41]0.420.004
 Placebo1.3 (0.22) [50]1.20 (0.24) [56]1.40 (0.23) [58]
PBH at month 24 from lesions at months 3, 6 and 12
 Laquinimod 0·6 mg0.7 (0.19) [32]0.440.0050.87 (0.17) [51]0.520.0090.95 (0.18) [52]0.500.002
 Placebo1.7 (0.26) [54]1.67 (0.25) [65]1.91 (0.26) [66]
PBH at month 24 from all lesions
 Laquinimod 0·6 mg1.0 (0.20) [41]0.450.0010.87 (0.17) [51]0.520.0091.20 (0.19) [55]0.51<0.001
 Placebo2.1 (0.29) [60]1.67 (0.25) [65]2.34 (0.28) [69]
  • *Adjusted means.

  • †Laquinimod versus placebo; NA, not assessed, since ‘new’ T2 lesions were not available at baseline. Data generated using a negative binomial regression model as described in statistical methods.

  • GdE, gadolinium enhancing; PBH, permanent black holes; RR, risk ratio.