Association between gender and ASDAS across regions (stratified analyses following the statistically significant interaction between gender and region)
| Gender (female vs male)* | Asia | Europe | Africa | North America | South America |
| ASDAS β (95% CI) | −0.02 (−0.20 to 0.15) | 0.20 (0.10 to 0.30) | 0.51 (0.27 to 0.75) | 0.08 (−0.27 to 0.43) | 0.46 (0.17 to 0.75) |
Estimates with p<0.05 are highlighted in bold.
*Model adjusted for age, education, Rheumatic Disease Comorbidity Index, body mass index, axial involvement and smoking.
ASDAS, Ankylosing Spondylitis Disease Activity Score.