Table 2 Multivariate linear regression models for the main outcomes in axial SpA patients
Dependent variable | Independent variables associated, according to the best-fitting model | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
ASDAS-CRP | Male sex P = 0.006 B = 0.13 | Older age P = 0.002 B = 0.16 | Shorter duration of symptoms P < 0.0001 B = 0.20 | Higher NSAID prescriptions P = 0.001 B = 0.16 | HLA-B27 Absent P = 0.014 B = 0.12 | Increased PJC P = 0.007 B = 0.13 | – | – | – | – | – |
BASDAI | – | – | – | – | HLA-B27 Absent P = 0.046 B = 0.10 | Increased PJC P < 0.0001 B = 0.07 | Longer diagnostic delay P = 0.0004 B = 0.18 | Increased enthesis count P < 0.0001 B = 0.29 | – | – | – |
BASMI | – | – | Longer duration of symptoms P < 0.0001 B = 0.35 | Higher NSAID prescriptions P = 0.01 B = 0.12 | – | – | Longer diagnostic delay P < 0.0001 B = 0.26 | – | BASDAI P < 0.0001 B = 0.24 | – | – |
BASFI | – | Older age P = 0.03 B = 0.11 | Longer duration of symptoms P = 0.0001 B = 0.19 | – | – | Increased PJC P = 0.001 B = 0.14 | Longer diagnostic delay P = 0.02 B = 0.11 | – | – | BASMI P < 0.0001 B = 0.54 | – |
ASQoL | – | – | – | – | – | – | – | – | BASDAI P < 0.0001 B = 0.30 | – | BASFI P < 0.0001 B = 0.29 |