Table 1.

Characteristics of treatment of PsA and AxS patients

PsA (n=1829)AxS (n=908)Difference (95% CI)
Female (%, n)55.1% (1007)29.1% (264)26 (22.2 to 29.6)*
Mean age at diagnosis (years, SD)46.9 (14)43.5 (14.4)3.4 (2.3 to 4.5)*
BMI (Index, SD)30.3 (6.3)28 (5.8)2.3 (1.8 to 2.8)*
Time from symptom to diagnosis (years, SD)8.9 (5.5)8.0 (5.6)0.9 (0.5 to 1.3)
Hypertension at diagnosis (%, n)24.2% (442/1829)19.4% (176/908)4.8 (1.5 to 8.0)*
Time from diagnosis to biologic (years, SD)6.3 (4.7)6.1 (5.0)0.2 (-0.9 to 0.5)
Used a Biologic (%, n)23% (420/1829)36.8% (334/908)13.8 (10.2 to 17.5)*
NSAIDs used pre-biologic (SD)11.3 (3.2)11.6 (3.2)0.3 (-0.2 to 0.8)
Number of DMARDs used pre-biologic (SD)3.1 (1.5)2.5 (1.7)0.6 (0.4 to 0.8)*
Biologic treatment change/failure (%, n)21.6% (92/425)22% (74/336)0.4 (-6.4 to 5.5)
Sicknotes issued by GP pre-biologic (SD)33.9% (144/425)33.6% (113/336)0.3 (-6.5 to 7.0)
Sicknotes issued by GP post-biologic (SD)
(%, n)
19.3% (82/425)16.7% (56/336)2.6 (-2.9 to 8.0)
Hospitalised for serious infection pre- diagnosis (%, n)7.2% (131/1829)6.3% (57/908)0.9 (-1.2 to 2.8)
Hospitalised for serious infection post- diagnosis (%, n)10.4% (190/1829)11.6% (105/908)1.2 (-1.3 to 3.8)
Hospitalised for serious infection post- biologic (%, n)5.6% (24/425)6.3% (21/336)0.7 (-2.8 to 4.2)
  • * Significant at p<0.05

  • ᵻ General practioner/Primary care physician