Independent variable | OR (95% CI)* n=3580 |
---|---|
Age, years | 1.01 (1.00 to 1.01) |
Gender (female vs male) | 1.78 (1.48 to 2.15) |
Primary education vs university | 1.58 (1.27 to 1.96) |
Secondary education vs university | 1.14 (0.94 to 1.38) |
High RF or ACPA | 1.40 (1.20 to 1.62) |
Rheumatic Disease Comorbidity Index (0–8) | 1.06 (1.00 to 1.13) |
The Netherlands | Reference category† |
Argentina vs the Netherlands | 4.26 (2.45 to 7.41) |
Austria vs the Netherlands | 1.62 (0.94 to 2.77) |
Egypt vs the Netherlands | 16.08 (8.87 to 29.12) |
France vs the Netherlands | 1.23 (0.75 to 2.01) |
Germany vs the Netherlands | 2.19 (1.23 to 3.92) |
Hungary vs the Netherlands | 3.14 (1.83 to 5.38) |
Italy vs the Netherlands | 2.35 (1.38 to 3.98) |
Japan vs the Netherlands | 1.37 (0.81 to 2.32) |
Korea vs the Netherlands | 1.81 (1.11 to 2.95) |
Morocco vs the Netherlands | 11.43 (6.22 to 21.02) |
Spain vs the Netherlands | 1.54 (0.90 to 2.64) |
Taiwan vs the Netherlands | 3.41 (2.05 to 5.69) |
The UK vs the Netherlands | 4.47 (1.87 to 10.71) |
Uruguay vs the Netherlands | 0.94 (0.39 to 2.29) |
The USA vs the Netherlands | 2.68 (1.63 to 4.42) |
Venezuela vs the Netherlands | 2.71 (1.58 to 4.66) |
Results from a multivariable logistic regression model.
*Estimates with p<0.05 are in bold.
†TheNetherlands was chosen as reference category as the country with the lowest DAS28 (unadjusted).
ACPA, anticitrullinated protein antibody; DAS28, disease activity score with 28-joint assessment; RF, rheumatoid factor.