Headache at presentation (n=117)No headache at presentation (n=656)Statistical significance (p)CI
Age (mean ± SD)47.7 (13.16)48.3 (14.3)0.1-5.757 to 0.912
Gender (M:F) ratio28:89 1:3.1219:419 1:1.90.3-0.025 to 0.077
Disease duration11.4 (12.1)10.9 (10.8)0.4-1.905 to 4.470
Delay in diagnosis6.43 (8.9)6.3 (8.1)0.7-3.151 to 2.151
ESR15.5 (14.8)18.2 (18)0.07-11.064 to 0.582
CRP10.4 (36)8.2 (9.8)0.4-6.106 to 12.536
BASDAI score7.31 (3.7)6.06 (2.08)0.000 (<0.005)0.783 to 2.624
BASFI score5.6 (2.7)5.04 (2.7)0.09-0.143 to 1.626
Main problem
Fatigue77/116 (66.4%)340/608 (55.9%)0.0180.029 to 0.299
Pain with pressure71/117 (61.2%)257/807 (42.4%)0.0000.122 to 0.378
Co-morbidities
Heart16/100 (16%)59/479 (12.3%)0.0020.44 to 0.196
Lungs11/99 (11.1%)52/475 (10.9%)0.1-.014 to 0.135
Dizziness50 (104) 48.1%147/408 (30.1%)0.0000.220 to 0.453
Numbness58 (105) 55.2%199/505 (39.4%)0.0000.188 to 0.441
Kidneys/urology23 (102) 22.5%100/479 (20.9%)0.1-0.31 to 0.188