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. 2014 Aug 27;9(8):e106036. doi: 10.1371/journal.pone.0106036

Table 3. Dependency of the number of SE found on fetal and maternal heart rate variability.

slope
n(SE)/ms* p slope r r2
fetal RR interval −0.05 0.158 −0.227 0.052
fetal SDNN −0.38 0.003 −0.461 0.213
fetal RMSSD −0.98 0.005 −0.438 0.192
maternal RR interval −0.02 0.105 −0.260 0.068
maternal SDNN −0.14 0.027 −0.349 0.122
maternal RMSSD −0.18 0.001 −0.509 0.259
Δq −101 <0.001 −0.526 0.277

SDNN: standard deviation, RMSSD: root mean square of successive differences, Δq: combined fetal-maternal variance, r: coefficient of correlation, r2: coefficient of determination. p slope values <0.05 in bold type.

*except Δq.