Table 4.

Responsiveness analysis of ADC scores in comparison of active group with Group 3. For SPARCC scores, because the SD for Group 3 is zero, no effect size can be calculated.

Active MeanActive SDGroup 3 MeanGroup 3 SDEffect Sizep
ADC0.500.35−0.030.077.61010−10
SPARCC10.6012.060.000.00NA9.6 × 10−6
ASDAS-CRP3.421.282.770.890.7360.049
ASDAS-ESR3.371.252.880.940.5290.14
ESR27.8423.0815.1013.980.9110.026
CRP16.1319.005.516.571.6180.0092
BASDAI6.252.526.542.14−0.1350.78
BASFI4.082.204.132.92−0.0190.94
BASMI2.331.812.111.960.1120.78
  • ADC: apparent diffusion coefficient; SPARCC: Spondyloarthritis Research Consortium of Canada; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; ASDAS: Ankylosing Spondylitis Disease Activity Score; CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; BASFI: Bath Ankylosing Spondylitis Functional Index; BASMI: Bath Ankylosing Spondylitis Metrology Index.