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Table 2 Differences in baseline ECG parameters between non-obese and obese participants with and without metabolic syndrome

From: Association of metabolic syndrome and electrocardiographic markers of subclinical cardiovascular disease

  Non-obese (84%) Obese (16%)
ECG parameter No MetS (83%) MetS (17%) Diff (95% CI) No MetS (n = 36%) MetS (64%) Diff (95% CI) p value int
Heart rate (bpm) 62.4 (0.2) 67.7 (0.5) 5.0 (3.9, 6.2) 65.8 (0.3) 68.8 (0.3) 3.1 (2.2, 4.0) 0.006
P duration (ms) 110.9 (0.4) 114.3 (0.6) 2.3 (0.9, 3.6) 115.2 (0.5) 115.8 (0.4) −0.6 (−1.8, 0.6) 0.002
QRS duration (ms) 92.3 (0.3) 94.5 (0.5) 0.8 (−0.4, 2.0) 92.9 (0.4) 95.0 (0.3) 0.7 (−0.3, 1.7) 0.985
PR interval (ms) 162.1 (0.6) 166.3 (1.0) 2.4 (−0.1, 4.8) 163.9 (0.8) 164.8 (0.6) −1.1 (−3.0, 0.9) 0.029
QTc interval (ms) 413.7 (0.6) 414.7 (1.0) 1.2 (−1.0, 3.4) 416.1 (0.9) 418.2 (0.6) 2.2 (0.2, 4.2) 0.373
P axis (°) 49.0 (0.7) 44.2 (1.0) −4.3 (−6.8, −1.9) 40.4 (0.8) 40.6 (0.6) −0.2 (−2.3, 1.9) 0.001
T axis (°) 39.4 (0.6) 36.2 (1.1) −2.8 (−5.5, −0.1) 32.3 (0.8) 34.4 (0.7) 2.0 (−0.2, 4.2) 0.001
QRS axis (°) 39.8 (0.8) 23.0 (1.4) −13.3 (−16.6, −10.1) 23.2 (1.0) 18.4 (0.8) −2.9 (−5.3, −0.5) <0.001
Small Q-wave (%) 5.2 9.1 2.8 (0.2, 5.4) 8.1 9.3 0.7 (−1.7, 3.0) 0.121
  1. Data are presented as mean (se) or percentage
  2. Results were based on weighted linear regression analysis adjusted for age, sex, ethnicity, smoking, alcohol intake, education level, physical activity and statin use
  3. MetS metabolic syndrome