Table 1

Clinical baseline characteristics of the study participants with and without incident atrial fibrillation

CharacteristicsNo AFIncident AFP value*
Participants with available daytime ABPMn=3813n=143
 Duration of follow-up (years)14.0 (10.9 to 19.1)12.0 (7.3 to 16.1)
 Clinical features
  Female, n (%)1989 (52.2)61 (42.7)0.026
  Age (years)42.5±14.959.2±11.3<0.0001
  Body mass index (kg/m2)25.5±4.528.1±4.8<0.0001
 Questionnaire data
  Tobacco use, n (%)1065 (27.9)28 (19.6)0.027
  Alcohol intake ≥5 g/day, n (%)1079 (28.3)29 (20.3)0.036
  Antihypertensive treatment, n (%)552 (14.5)48 (33.6)<0.0001
  Diabetes mellitus, n (%)114 (3.0)10 (7.0)0.0070
  History of CV diseases, n (%)287 (7.5)33 (23.1)<0.0001
 Biochemical data
  Serum total cholesterol (mmol/L)5.32±1.125.76±1.230.0005
Participants with complete 24-hour ABPMn=2665n=111
 Duration of follow-up (years)13.5 (9.2 to 22.7)13.0 (7.3 to 17.1)
 Clinical features
  Female, n (%)1399 (52.5)48 (43.2)0.056
  Age (years)43.1±15.059.0±10.4<0.0001
  Body mass index (kg/m2)25.6±4.528.0±4.9<0.0001
      
 Questionnaire data
  Tobacco use, n (%)747 (28.0)22 (19.8)0.058
  Alcohol intake ≥5 g/day, n (%)736 (27.6)22 (19.8)0.071
  Antihypertensive treatment, n (%)414 (15.5)38 (34.2)<0.0001
  Diabetes mellitus, n (%)89 (3.3)7 (6.3)0.094
  History of CV diseases, n (%)233 (8.7)27 (24.3)<0.0001
 Biochemical data
  Serum total cholesterol (mmol/litre)5.34±1.155.85±1.16<0.0001
  • Values are arithmetic mean±SD or number of subjects (%) or median (IQR). P values are for differences between two groups.

  • ABPM, ambulatory blood pressure monitoring; AF, atrial fibrillation; CV, cardiovascular.