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Table 1 Baseline clinical characteristics of the study groups

From: Clinical outcomes of catheter ablation of paroxysmal atrial fibrillation in very young population compared to older population: a prospective study

Characteristic Young group Old group P value
Age at ablation time (years) 31.6 ± 4.2 (20–35) 49 ± 8.4 (36–66) < 0.001
Gender 0.85
 Male 23 (76.6 %) 34 (73.9%)
 Female 7 (23.3%) 12 (26.1%)
BMI (kg/m2) 27 ± 3.7 29.2 ± 4.1 0.019
 BMI > 25 kg/m2 10 (33.3%) 18 (39.1%)
 BMI > 30 kg/m2 8 (26.6%) 21 (45.7%)
Arterial hypertension 15 (50%) 28 (60.9%) 0.43
Diabetes mellitus 5 (16.6%) 10 (21.7%) 0.63
Smoking 5 (16.6%) 14 (30.4%) 0.201
Thyroid disease 0 0  
Structural heart disease 1 (3.3%) 5 (10.8%) 0.154
 IHD 0 4
 DCM 0 0
 HCM 1 1
 VHD 0 0
AF
 Duration (months) 36 (12–120) 36 (6–120) 0.3
 Frequency/month 4 (2–6) 3 (1–6) 0.34
 EHRA score 3 (27 patients) 3 (38 patients) 0.29
LA volume (ml) 39.6 ± 3.1 52.8 ± 4.9 0.001
LVEF% 65.6 ± 3.2 64.2 ± 4.5 0.138
CHA2DS2-VASc score 0.93 ± 0.75 2.11 ± 1.32 < 0.001
Median 1 Median 2
Beta blockers 2 (6.7%) 4 (8.7%)
Class I AAD 16 (53.3%) 20 (43.5%)
Class III AAD 12 (40%) 26 (56.5%)
  1. BMI body mass index, IHD ischemic heart disease, DCM dilated cardiomyopathy, HCM hypertrophic cardiomyopathy, VHD valvular heart disease, AF atrial fibrillation, LA left atrium, LVEF LV ejection fraction, AAD antiarrhythmic drugs