Table 1

Results

VariableTotal group n=17 (SD)No SAS n=15 (SD)t Test (p)SAS n=2 (SD)Patient 1Patient 2
SAS, sleep apnoea syndrome; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; HAD, Hospital Anxiety and Depression Scale; ESS, Epworth Sleepiness Scale.
Age (years)47.1 (12.8)46.9 (13.5)0.7649.0 (7.1)5444
Disease duration (years)26.2 (13.3)26.1 (14.2)0.8627.0 (4.2)3024
BASDAI4.9 (1.8)4.8 (1.9)0.595.5 (1.3)4.66.4
Fatigue component of BASDAI6.0 (2.5)5.8 (2.5) 0.04 8.0 (0.7)8.57.5
HAD5.3 (3.0)4.9 (2.9)0.358.0 (2.8)610
ESS9.7 (5.5)8.6 (5.1) <0.01 16.5 (0.7)1722
Alcohol (units/week)6.7 (8.9)7.5 (9.1) 0.01 0.0 (0.0)00
Smoking (cigarettes/day)6.7 (8.7)6.2 (8.4)0.7710.0 (14.1)020
Body mass index26.4 (5.0)25.6 (4.6)0.1332.7 (3.1)30.534.9
Neck circumference (cm)39.4 (8.7)39.2 (9.2) 0.02 41.0 (4.2)3844
Occiput wall (cm)5.9 (5.0)5.5 (4.4)0.719.0 (9.9)216
Schobers (cm)4.8 (4.0)5.1 (4.2)0.233.0 (1.4)42
Chest expansion (cm)2.9 (1.8)3.1 (1.8)0.091.5 (0.7)21