Table 4: Discriminant analysis in 18 patients without AAD pre-treatment (Group 1a vs Group 2a) . during daily activity (4A) and night sleep (4B). Performance of the classification rules based on single HRV parameter and combination of parameters.
4A | Parameters | AF Recurrence if |
Sensitivity % |
Specificity % |
PPV % |
NPP % |
Accuracy % |
|
daily activity | TD | Mean RR | > 893.92 | 71.4 | 72.7 | 62.5 | 80 | 72.2 |
FFT | HF ms2 | >73.08 | 90.9 | 42.9 | 71.4 | 75 | 72.2 | |
LF n.u | < 72.74 | 71.4 | 72.7 | 62.5 | 80 | 72.2 | ||
HF n.u | >26.99 | 71.4 | 72.7 | 62.5 | 80 | 72.2 | ||
LF/HF | < 4.57 | 85.7 | 72.7 | 66.7 | 88.9 | 77.8 | ||
AR | HF % | > 21.62 | 71.4 | 72.7 | 62.5 | 80 | 72.2 | |
LF n.u | < 72.12 | 71.4 | 72.7 | 62.5 | 80 | 72.2 | ||
HF n.u. | > 27.5 | 71.4 | 72.7 | 62.5 | 80 | 72.2 | ||
LF/HF | < 3.84 | 85.7 | 63.6 | 60 | 87.5 | 72.2 | ||
NL | SD1/SD2 | > 0.492 | 42.9 | 81.8 | 66.7 | 75 | 72.2 | |
ApEn | < 1.107 | 57.1 | 100 | 100 | 78.6 | 83.3 | ||
F1 | < 0 | 71.4 | 81.8 | 71.4 | 81.8 | 72.2 | ||
F2 | < 0 | 71.4 | 90.9 | 100 | 84.6 | 88.9 | ||
F1 = -0.01 x HFms2fft -0.12 LFx n.u. fft +1.11 x LF/HF fft +0.07 x HF%AR +0.22 x LF n.u.AR -0.97 x LF/HFAR -8.58 F2 = -5.23 x SD1/SD2 +16.41 x ApEn -15.06 |
4B | Parameters | AF Recurrence if |
Sensitivity % |
Specificity % |
PPV % |
NPP % |
Accuracy % |
|
night sleep | TD | SDNN/RMSSD | > 1.032 | 71.4 | 72.7 | 66.7 | 88.9 | 77.8 |
AR | VLF ms2 | > 81.2 | 57.1 | 72.7 | 66.7 | 75 | 72.2 | |
HF % | < 32.93 | 100 | 55 | 58.3 | 100 | 72.2 | ||
LF n.u. | > 60.57 | 100 | 55 | 64 | 100 | 77.8 | ||
HF n.u. | < 38.83 | 100 | 64 | 64 | 100 | 77.8 | ||
NL | SD1/SD2 | < 0.588 | 85.7 | 63.6 | 60 | 87.5 | 72.2 | |
DFA a1 | > 1.056 | 85.7 | 55 | 58.3 | 100 | 72.2 | ||
ApEn | < 1.066 | 71.4 | 81.8 | 71.4 | 81.8 | 77.8 | ||
SampEn | < 1.774 | 85.7 | 81.8 | 75 | 90 | 83.3 | ||
F1 | > 0 | 71.4 | 64 | 55.6 | 78 | 83.3 | ||
F2 | > 0 | 85.7 | 91 | 85.7 | 91 | 100 | ||
F1 = 1.76 x SDNN/RMSSD + 0.01 x VLF ms2 - 0.03 x HF% + 0.01 x LF n.u. -2.31 F2 = 12.71 x SD1/SD2 + 6.44 x DFA a1 -19.50 x ApEn -7.8 x SampEn +20.35 |
FFT: Fast Fourier Transform. AR: Auroregressive. NL: Non-linear.