Table 2 Median [1st, 3rd] quartiles of heart rate variability (HRV) indices in the groups of patients with the cardiomyopathy or the mixed (cardiodigestive) form of Chagas disease

− 4.63 [− 7.92, − 3.17]

− 3.57 [− 5.07, − 2.89]

0.181

4.49 [3.02, 7.93]

3.81 [3.03, 5.34]

0.324

49.9 [46.5, 51.3]

50.1 [48.6, 52.8]

0.109

49.9 [45.3, 51.5]

51.3 [48.2, 56.0]

0.117

− 0.34 [− 0.86, 0.57]

0.67 [− 0.38, 2.54]

0.274

1.10 [0.92, 1.27]

0.91 [0.71, 1.07]

0.181

1.49 [1.20, 1.79]

1.63 [1.42, 1.83]

0.718

4.42 [4.14, 4.67]

4.44 [4.02, 4.66]

0.840

0.72 [0.67, 0.76]

0.66 [0.62, 0.70]

0.331

1.54 [1.37, 1.76]

1.63 [1.32, 1.73]

0.968

2.51 [2.47, 2.55]

2.55 [2.51, 2.56]

0.081

0.90 [0.87, 0.91]

0.90 [0.87, 0.91]

0.857

1.85 [1.52, 2.02]

1.82 [1.53, 2.05]

0.868

62.8 [53.7, 65.8]

63.7 [57.9, 69.2]

0.411

2.7 [0.5, 3.8]

1.2 [0.8, 2.6]

0.439

19.1 [12.7, 34.2]

23.1 [13.4, 32.1]

0.788

61.6 [44.4, 72.2]

55.5 [48.5, 60.8]

0.424

12.0 [7.4, 15.1]

16.9 [11.6, 23.8]

0.227

22.0 [7.5, 32.4]

19.0 [9.9, 31.8]

0.926

45.1 [34.3, 49.4]

45.0 [31.8, 50.4]

0.993

4.0 [2.2, 8.3]

5.8 [2.1, 7.1]

0.994

21.6 [15.5, 34.3]

24.1 [18.1, 34.3]

0.855

86.9 [44.1, 171.7]

28.5 [17.1, 97.5]

0.060

87.7 [36.4, 243.7]

51.0 [33.2, 105.8]

0.181

1.24 [0.59, 1.95]

0.6 [0.3, 1.8]

0.215

1016 [842, 1084]

977 [798, 1062]

0.522

27.1 [19.4, 35.3]

19.8 [14.4, 24.9]

0.298

18.3 [11.2, 31.3]

17.2 [12.1, 20.9]

0.326

8.16 [5.47, 9.97]

5.68 [4.31, 7.31]

0.146

121.1 [80.1, 146.5]

78.1 [62.5, 101.6]

0.046