Characteristic | n (%) | Median (range) | Mean ± SD |
---|---|---|---|
Demographic variables | |||
Sex | |||
Women | 87 (43) | ||
Men | 117 (57) | ||
Postmenopausal women | 45 | ||
Age, yrs | 49 (17, 78) | 50 ± 13 | |
Heredity for fractures | 57 (28) | ||
Current smokers | 24 (12) | ||
Ever smokers (> 6 months) | 101 (49.5) | ||
Daily calcium intake, dairy products, mg/day | 600 (0, 2640) | 668 ± 397 | |
BMI | 25 (19, 46) | 26 ± 4 | |
LTPAI total, hours per week | 6 (0, 42) | 7.5 ± 6 | |
Disease-related variables | |||
Yrs since onset of symptoms | 24 (2, 55) | 24 ± 13 | |
Yrs since diagnosis | 12 (1, 47) | 15 ± 11 | |
History of anterior uveitis | 102 (50) | ||
History of peripheral arthritis | 120 (59) | ||
History of coxitis | 17 (8) | ||
BASMI, score | 3.0 (0.6, 7.4) | 3.1 ± 1.6 | |
BASDAI, score | 3.5 (0, 9.6) | 36 ± 2.1 | |
BASFI, score | 2.3 (0, 8.7) | 2.7 ± 2.1 | |
BAS-G1, score | 2.9 (0, 10) | 3.4 ± 2.6 | |
BAS-G2, score | 3.4 (0, 9.7) | 3.8 ± 2.6 | |
ASDAS, score | 2.3 (0.8, 5.9) | 2.4 ± 0.9 | |
mSASSS, score | 5.5 (0, 72) | 14.2 ± 19.2 | |
ESR, mm/h | 11 (2, 105) | 15 ± 14 | |
Mean ESR 2004–2008, mm/h | 16 (2, 102) | 19 ± 15 | |
CRP, mg/l | 5 (3, 80) | 9 ± 10 | |
Hemoglobin, g/l | 139 (105, 166) | 139 ± 13 | |
White blood cell count, × 109/l | 6.7 (2.7, 18.1) | 7.0 ± 2.1 | |
Platelets, × 109/l | 287 (133, 506) | 299 ± 75 | |
Creatinine, μmol/l | 70 (43, 148) | 71 ± 15 | |
HLA-B27-positive | 178 (87) | ||
Patients on NSAID | 158 (77) | ||
Patients on DMARD monotherapy | 30 (15) | ||
Patients on TNF inhibitor monotherapy | 10 (5) | ||
Patients taking DMARD and TNF inhibitor combination therapy | 32 (16) | ||
Patients taking glucocorticoids | 7 (3) | ||
Prednisolone lifetime use, mg | 100 (0, 56390) | 1397± 5775 |
BASMI: Bath Ankylosing Spondylitis Metrology Index; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath Ankylosing Spondylitis Functional Index; BAS-G: Bath Ankylosing Spondylitis patient global score; ASDAS: Ankylosing Spondylitis Disease Activity Score; mSASSS: modified Stoke Ankylosing Spondylitis Spine Score; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; NSAID: nonsteroidal antiinflammatory drugs; DMARD: disease-modifying antirheumatic drug; TNF: tumor necrosis factor; BMI: body mass index; LTPAI: Leisure Time Physical Activity Instrument.