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. 2018 Aug 28;13(8):e0202125. doi: 10.1371/journal.pone.0202125

Table 6. Selected features and their ranks to classify between non-pregnant dummy intervals, and preterm and term, contraction and dummy intervals of the TPEHGT DS.

TPEHGT DS
SFS (200 runs)
(QDA algorithm)
53 non-pregnant / 53 preterm
Signal S2 Signal S3
Band B0 Band B1 Band B2 Band B3 Band B0 Band B1 Band B2 Band B3
SE MF SE MF PA SE MF PA SE MF PA SE MF SE MF PA SE MF PA SE MF PA
Contraction intervals (6) 5 - - - - 1 - - 2 - - 6 - - - - 4 - - 3 - -
Dummy intervals (3) 1 - - - - - - - 3 - - 2 - - - - - - - - - -
Signal S2 Signal TOCO
Band B0 Band B1 Band B2 Band B3 Band B0 Band B1 Band B2 Band B3
SE MF SE MF PA SE MF PA SE MF PA SE MF SE MF PA SE MF PA SE MF PA
Contraction intervals (1) - - - - - - - - - - - - - - - - - - - 1 - -
Dummy intervals (1) - - - - - - - - - - - - - - - - 1 - - - - -
SFS (200 runs)
(QDA algorithm)
53 non-pregnant / 53 preterm
Signal S2 Signal S3
Band B0 Band B1 Band B2 Band B3 Band B0 Band B1 Band B2 Band B3
SE MF SE MF PA SE MF PA SE MF PA SE MF SE MF PA SE MF PA SE MF PA
Contraction intervals (5) 5 - - - - 2 4 - 1 - - - 3 - - - - - - - - -
Dummy intervals (2) 1 - - - - 2 - - - - - - - - - - - - - - - -
Signal S2 Signal TOCO
Band B0 Band B1 Band B2 Band B3 Band B0 Band B1 Band B2 Band B3
SE MF SE MF PA SE MF PA SE MF PA SE MF SE MF PA SE MF PA SE MF PA
Contraction intervals (1) - - - - - - - - - - - - - - - - 1 - - - - -
Dummy intervals (1) - - - - - - - - - - - - - - - - 1 - - - - -

The number of selected features per classification task are in brackets. The top three ranked features per classification task and combination of signals are in bold.