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Table 1 Number of synchronization epochs in the real and surrogate data. Number of synchronization epochs (SE) found in the real and surrogate data: overall, in the 2nd and 3rd trimester, per subject, per data set and for each n:m combination.

From: Is there evidence of fetal-maternal heart rate synchronization?

  total 2nd Trimester 3rd Trimester per subject per data set 1:1 2:1 3:2 4:3 5:2 5:3 5:4 7:3 7:4 9:4
     mean ± SD (range) mean ± SD (range)           
real 712 182 (26%) 530 (74%) 12 ± 17 (0–93) 4.0 ± 2.6 (0–11) 1 48 97 84 3 207 32 21 178 41
surrogate 741 202 (27%) 539 (73%) 12 ± 18 (0–91) 4.2 ± 2.7 (0–12) 1 24 90 66 7 258 21 30 197 47