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Table 3 Incidence of AF by occurrence of elevated TnT and frequent supraventricular arrhythmias

From: Supraventricular arrhythmia, N-terminal pro-brain natriuretic peptide and troponin T concentration in relation to incidence of atrial fibrillation: a prospective cohort study

N = 373 Subjects Incident AF cases Incidence rate (per 1000 person-years) Model 1 h (95%CI) Model 2 h (95%CI)
TnT and SVEs      
 Non-elevated TnT, infrequent SVEs 225 37 10.00 Ref Ref
 Elevated TnT, infrequent SVEs 54 10 12.76 1.09 (0.54, 2.20) 0.96 (0.47, 1.97)
 Non-elevated TnT, frequent SVEs 55 19 23.69 2.24 (1.28, 3.92) 2.30 (1.30, 4.09)
 Elevated TnT, frequent SVEs 39 22 46.69 3.71 (2.11, 6.51) 3.07 (1.74, 5.41)
Interaction TnT *SVEs     P = 0.377 P = 0.501
TnT and SVTs      
 Non-elevated TnT, infrequent SVTs 221 33 9.18 Ref Ref
 Elevated TnT, infrequent SVTs 54 14 18.22 1.66 (0.88, 3.12) 1.43 (0.75, 2.74)
 Non-elevated TnT, frequent SVTs 59 23 25.27 2.40 (1.40, 4.11) 2.29 (1.31, 4.02)
 Elevated TnT, frequent SVTs 39 18 37.02 2.99 (1.65, 5.45) 2.58 (1.40, 4.76)
Interaction TnT *SVTs     P = 0.528 P = 0.599
TnT and SVA      
 Non-elevated TnT, non-elevated SVA 198 30 9.22 Ref Ref
 Elevated TnT, non-elevated SVA 50 10 13.79 1.27 (0.62, 2.62) 1.07 (0.51, 2.24)
 Non-elevated TnT, elevated SVA 82 26 20.79 1.97 (1.16, 3.35) 1.91 (1.10, 3.33)
 Elevated TnT, elevated SVA 43 22 41.55 3.35 (1.87, 5.99) 2.85 (1.58, 5.13)
Interaction TnT *SVA     P = 0.533 P = 0.493
  1. Model 1: age, sex adjusted (n = 373)
  2. Model 2: Model 1 + smoking status + anti-hypertension medications + systolic blood pressure + LDL + natural log of HOMA-IR + height + weight (n = 364)
  3. Frequent SVEs, SVTs, and elevated TnT were defined as the top quartile, corresponding to > 129.18 SVEs/24 h, 3.06 SVTs/24 h and > 1.38 pg/ml TnT, respectively; elevated SVA was defined as frequent SVEs or SVTs
  4. AF atrial fibrillation, TnT troponin T, SVEs supraventricular extrasystoles, SVTs supraventricular tachycardias, SVA supraventricular activity
  5. P < 0.05 when compared to group with elevated TnT and frequent SVEs
  6. P < 0.05 when compared to group with elevated TnT and elevated SVA