Table 1

 Clinical characteristics and outcome of patients with or without device detected atrial fibrillation (AF) episodes by pacemaker diagnostic counters after implantation

AF (n = 99)No AF (n = 127)P values*
*Comparison between the presence and the absence of atrial fibrillation documented by the pacemaker after implantation.
Age (years)72 (10)70 (10)0.21
Female (%)56660.17
Duration of follow up (months)88 (32)82(27)0.19
Prior history of AF (%)5525<0.001
    Baseline (%)325<0.001
    Follow up (%)566<0.001
    Baseline (%)283<0.001
    Follow up (%)496<0.001
Underlying heart disease (%)7654<0.001
    Ischaemic heart disease36280.02
    Hypertrophic cardiomyopathy9130.42
    Thyroid heart disease550.66
    Dilated cardiomyopathy210.33
Left atrial diameter (cm)4.0 (0.7)3.6 (0.7)0.02
Left ventricular ejection fraction0.50 (0.13)0.56 (0.15)0.04
Left ventricular mass (g)274 (105)240 (120)0.21
Left ventricular hypertrophy (%)3918<0.001
P wave duration (ms)130 (21)122 (17)0.049
Combined cardiovascular events (%)4215<0.001
Non-fatal stroke (%)328<0.001
Hospitalisation for congestive heart failure (%)15100.31
Cardiovascular death (%)940.16