. Author manuscript; available in PMC: 2023 Aug 1.

Published in final edited form as: Int J Gynaecol Obstet. 2021 Oct 31;158(2):398–405. doi: 10.1002/ijgo.13972

TABLE 1.

Correlation between predelivery angiogenic factors and the total 4-item perceived stress score

Pre- delivery angiogenic factor	Total 4-item perceived stress scale (PSS)	Spearman’s correlation
		Normotensive, n = 90		sPE, n = 50
		Correlation coefficient	P value	Correlation coefficient	P value
sFlt-1
	Pre-delivery	+0.023	0.828	−0.124	0.390
	Within 48 −72 hours postpartum	+0.214	0.043^a	+0.085	0.559

PIGF
	Pre-delivery	−0.181	0.088	+0.134	0.355
	Within 48 −72 hours postpartum	−0.177	0.096	−0.141	0.330

sFlt-1/PIGF ratio
	Pre-delivery	+0.160	0.133	−0.183	0.203
	Within 48 −72 hours postpartum	+0.213	0.044^a	+0.130	0.369

Abbreviation: PIGF, placental growth factor (PIGF); PSS, 4-item perceived stress scale; sPE, Pre-eclampsia with severe features; sFlt-1, Soluble fms-like tyrosine kinase-1.

Significant P value.