Table 1.
Demographic data of the study subjects.
| Characteristic | AS patients (n = 48) | Healthy subjects (n = 48) | p value |
|---|---|---|---|
| Sex (M/F) | 48/0 | 48/0 | — |
| Age (years), mean (SD) | 46.06 ± 1.44 | 46.63 ± 1.50 | 0.096 |
| BMI (kg/m2), mean (SD) | 24.5 ± 4.4 | 23.8 ± 5.7 | 0.674 |
| Smoking (yes/no) | 0/48 | 0/48 | — |
| BASDAI | 5.35 ± 1.64 | — | — |
| BASFI | 5.13 ± 2.17 | — | — |
| HLA B27 antigen (yes/no) | 48/0 | — | — |
| Cerebral/coronary/peripheral vascular disease (yes/no) | 0/48 | 0/48 | — |
| Hypertension (yes/no) | 0/48 | 0/48 | — |
| Diabetes mellitus (yes/no) | 0/48 | 0/48 | — |
| Hyperlipidemia (yes/no) | 0/48 | 0/48 | — |
| Medication | |||
| NSAID (yes/no) | 48/0 | — | — |
| DMARD (yes/no) | 0/48 | — | — |
| Biological agents (yes/no) | 0/48 | — | — |
SD: standard deviation; BMI: body mass index; BASDAI: the Bath Ankylosing Spondylitis Disease Activity Index; BASFI: the Bath Ankylosing Spondylitis Functional Index; HLA B27 antigen: human leukocyte B27 antigen; NSAID: nonsteroidal anti-inflammatory drug; DMARD: disease-modifying antirheumatic drug.