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Table 4 Univariate associations between cardiac involvement and clinical data in 210 patients with ankylosing spondylitis

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

  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 0.47 ( 0.19,0.74) .001 0.10 (−0.04,0.25) .17 1.088 (1.040,1.138) .0003 1.070 (1.033,1.109) .0002
Male gender 15.3 (8.2,22.4) <.0001 10.8 (7.3,14.3) <.0001 8.28 (1.88,36.53) .005 4.70 (1.73,12.80) .002
Age spt onset 0.27 (−0.12,0.66) .17 0.12 (−0.08,0.32) .24 1.002 (0.956,1.051) .92 1.015 (0.976,1.055) .46
Symptom dur. 0.38 ( 0.09,0.67) .01 0.02 (−0.13,0.17) .79 1.069 (1.030,1.111) .0005 1.055 (1.023,1.088) .0007
BASDAI −0.16 (−0.88,1.56) .86 −0.93 (−1.78,-0.09) .03 0.993 (0.801,1.232) .95 0.997 (0.832,1.194) .97
BASFI 1.68 (−0.09,3.46) .06 −0.44 (−1.33,0.45) .33 1.207 (0.984,1.479) .07 1.239 (1.041,1.474) .02
BASMI 3.42 ( 1.12,5.72) .004 0.24 (−0.95,1.44) .69 1.593 (1.224,2.074) .0005 1.566 (1.241,1.975) .0002
Length −0.61 ( 0.24,0.97) .001 0.52 ( 0.35,0.70) <.0001 1.060 (1.009,1.114) .02 1.048 (1.006,1.092) .02
Weight 0.52 ( 0.31,0.74) <.0001 0.29 ( 0.18,0.40) <.0001 1.039 (1.012,1.067) .005 1.051 (1.025,1.077) <.0001
BMI 0.66 (−0.14,1.46) .11 0.40 (−0.01,0.81) .05 0.956 (0.857,1.068) .43 1.011 (0.931,1.097) .80
Hb 0.57 ( 0.29,0.85) <.0001 0.27 ( 0.13,0.42) .0002 1.027 (0.989,1.066) .17 1.038 (1.005,1.073) .02
ESR −0.09 (−0.36,0.18) .49 −0.10 (−0.24,0.03) .14 1.007 (0.977,1.038) .65 0.991 (0.959,1.023) .56
CRP −0.04 (−0.41,0.33) .82 −0.04 (−0.22,0.15) .69 1.025 (0.994,1.058) .12 1.021 (0.992,1.052) .16
WBC −1.79 (−3.51,-0.07) .04 −0.56 (−1.43,0.32) .21 0.977 (0.787,1.213) .83 0.863 (0.700,1.063) .17
PLT −0.05 (−0.10,-0.00) .05 −0.01 (−0.04,0.01) .37 0.998 (0.992,1.004) .58 0.995 (0.990,1.001) .10
B27 alleles 6.2 (−4.8,17.2) .27 −0.2 (−5.9,5.4) .93 3.21 (0.41,24.95) .26 2.37 (0.53,10.55) .26
  1. AVB IVCD denotes atrio-ventricular and intra-ventricular conduction disturbances according to standard (conservative) criteria (n = 21).
  2. AVB IVCDx denotes such disturbances according to less conservative criteria (n==31) for comparison with ref.[13].
  3. Abbreviations: PQ interval = duration from P-wave to QRS complex; QRS interval = duration of QRS complex; AVB atrio-ventricular Block; IVCD intra-ventricular conduction disturbances: BASDAI Bath Ankylosing Spondylitis Disease Activity Index; BASFI Bath Ankylosing Spondylitis Functional Index; BASMI Bath Ankylosing Spondylitis Metrology Index; BMI Body Mass Index; Hb Hemoglobin (g/L); ESR Erythrocyte Sedimentation Rate (mm/h); CRP C-reactive protein (mg/L); WBC White Blood Cells (×109/L); PLT Platelet Count (×109/L).
  4. Beta regression coefficient; CI confidence interval; OR = odds ratio.
  5. Univariate associations (univariate linear regression and logistic regression).