Table 1

 ECG and echocardiographic characteristics in individuals without (<5 IU/ml), with elevated (>5 IU/ml), and with positive (>10 IU/ml) anti-Borrelia IgG antibodies

Interval dataSeronegativesElevated anti-Borrelia IgGPositive anti-Borrelia IgGNominal dataSeronegatives (reference)Elevated anti-Borrelia IgGPositive anti-Borrelia IgG
*No subject with elevated or positive anti-Borrelia IgG had LBBB and no subject with positive anti-Borrelia IgG had incomplete RBBB.
All data are adjusted for sex and age; in both the general linear model (interval data) and logistic regression (nominal data) no differences attained significance. Data are given as adjusted mean (standard error) and as odds ratio (95% confidence interval) as indicated.
ECG n = 3345n = 345n = 119n = 3345n = 345n = 119
P duration (ms)113.9 (0.2)114.3 (0.6)114.2 (1.1)AVB I°1.01.19 (0.77 to 1.84)1.13 (0.57 to 2.25)
PQ duration (ms)159.4 (0.4)160.4 (1.2)158.7 (2.1)*LBBB1.0
QRS duration (ms)99.8 (0.2)99.0 (0.8)100.2 (1.3)LAFB1.00.89 (0.46 to 1.64)1.15 (0.48 to 2.76)
LPFB1.03.49 (0.20 to 60.1)8.32 (0.51 to 137.2)
RBBB1.01.19 (0.60 to 2.36)2.05 (0.88 to 4.76)
*Incomplete RBBB1.00.70 (0.16 to 3.0)
Echo n = 1621n = 186n = 72n = 2058n = 272n = 100
LVM (g)190.8 (1.3)195.4 (3.8)193.7 (6.0)Moderate aortic valve sclerosis1.01.22 (0.90 to 1.65)1.54 (0.96 to 2.45)
LVEDD (mm)51.2 (0.13)51.5 (0.39)51.0 (0.62)Severe aortic valve sclerosis1.00.97 (0.58 to 1.63)1.07 (0.48 to 2.42)
FS0.371 (0.002)0.374 (0.007)0.372 (0.012)n = 2042n = 272n = 100
Moderate mitral sclerosis1.00.63 (0.30 to 1.35)0.41 (0.10 to 1.71)
Severe mitral sclerosis1.01.14 (0.63 to 2.07)1.04 (0.40 to 2.70)