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Statistically significant (p < 0.05) Spearman’s correlations between the maternal sympatho-vagal balance and CI, maternal sympatho-vagal balance and TPVR in the study population.
| Pairs of parameters (X versus Y) | Group I | Group II | Group III |
|---|---|---|---|
| Sympatho-vagal balance versus CI | R = −0.30 | R = −0.34 | R = −0.63 |
| Sympatho-vagal balance versus TPVR | R = 0.32 | R = 0.38 | R = 0.70 |
