Cardiac conduction system abnormalities in ankylosing spondylitis: a cross-sectional study

Table 5 Multivariate analyses between cardiac involvement and clinical data in 210 patients with ankylosing spondylitis

	PQ interval		QRS interval		AVB IVCD		AVB IVCDx
	Beta (95% CI)	p	Beta (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Age	0.48 (0.21,0.74)	.0005			1.091 (1.042,1.143)	.0002
Symptom dur.							1.062 (1.026,1.098)	.0003
Weight	0.32 (0.06,0.57)	.02	0.18 (0.05,0.31)	.007			1.055 (1.027,1.083)	<.0001
WBC	−2.12 (−3.70,-0.53)	.009
Male gender	10.2 (2.1,18.3)	.01	7.0 (2.8,11.2)	.001	9.64 (2.12,43.87)	.003

AVB IVCD denotes atrio-ventricular and intra-ventricular conduction disturbances according to standard (conservative) criteria (n = 21).
AVB IVCDx denotes such disturbances according to less conservative criteria (n = 31) for comparison with ref.[13].
PQ interval = duration from P-wave to QRS complex; QRS interval = duration of QRS complex; AVB = atrio-ventricular Block; IVCD intra-ventricular conduction disturbances; WBC White Blood Cells (×10⁹/L).
Beta regression coefficient; CI confidence interval; OR = odds ratio.
Multivariate analyses (forward stepwise multivariate linear regression and logistic regression).

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