Table 5.

Multivariate logistic regression analyses of clinical factors for hypertension among the 167 AS patients.

Clinical factors	Hypertension
	Odds ratio (OR) (95% CI)	P value
ESR (mm/h) (n = 164)	1.016 (0.983–1.050)	.346
BASFI (n = 164)	1.053 (0.787–1.407)	.730
BASMI (n = 152)	1.068 (0.834–1.367)	.602
Tragus-to-wall distance (cm) (n = 165)	1.010 (0.936–1.091)	.796
Intermalleolar distance (cm) (n = 166)	0.991 (0.968–1.015)	.453
Cervical rotation (degree) (n = 155)	0.999 (0.984–1.015)	.936
Lateral lumbar flexion (cm) (n = 166)	0.994 (0.877–1.016)	.122
Chest expansion (cm) (n = 166)	0.864 (0.656–1.136)	.295
Occiput-to-wall distance (cm) (n = 166)	1.034 (0.961–1.112)	.376
BASRI-total (n = 156)	1.059 (0.871–1.288)	.564
m-SASSS (n = 156)	1.033 (1.003–1.065)	.033*
Regular exercise (n = 166)	2.055 (0.766–5.516)	.153

Variables were adjusted by age, gender, diabetes mellitus, hypercholesterolemia, body mass index.

AS = ankylosing spondylitis, BASFI = Bath Ankylosing Spondylitis Functional Index, BASMI = Bath Anklyosing Spondylitis Metrology Index, BASRI = Bath Ankylosing Spondylitis Radiology Index, m-SASSS = modified Stoke Ankylosing Spondylitis Spinal Score.

^*Statistical significances.

Listwise deletion for missing data.