Table 4 Correlation (r value) of the candidate scores with items from the OASIS database
ASDAS AASDAS BASDAS CASDAS D
Included variablesBASDAI Q2 Patient global BASDAI Q6 Ln (CRP+1) √(ESR)Patient global √(ESR) BASDAI Q3 BASDAI Q6 BASDAI Q2BASDAI Q2 Patient global BASDAI Q3 BASDAI Q6 Ln (CRP+1)√(ESR) BASDAI Q2 Ln (CRP+1) BASDAI Q6 BASDAI Q1
Excluded variableCRPESRPatient global
Items from OASIS database
BASDAI0.690.770.750.74
Patient global0.720.750.720.58
Physician global0.450.480.410.45
Dougados Functional Index0.460.510.470.51
BASFI0.540.560.580.60
CRP0.730.500.750.74
ESR0.670.690.500.67
Swollen joint count0.280.380.330.31
  • ASDAS, Ankylosing Spondylitis Disease Activity Score; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; OASIS, Outcome in Ankylosing Spondylitis International Study; Q, question.