. 2014 Nov 20;14:390. doi: 10.1186/s12884-014-0390-2

Table 4.

Pearson’s correlation co-efficient of association between variables for the control (lower left-hand side) and PE (upper right-hand side) groups

Variable	Age	SBP	DBP	GA	BMI	Ca ²⁺	Mg ²⁺
Age		0.197	0.267	0.346	−0.239	0.054	−0.118
SBP	0.194		0.254	−0.066	0.095	0.011	0.284
DBP	0.201	0.370 ^*		0.012	−0.209	0.078	0.236
GA	−0.085	−0.015	−0.166		0.309	−0.139	−0.190
BMI	0.303	0.434 ^**	0.068	0.011		−0.387	−0.356
Ca ²⁺	0.179	−0.181	−0.130	0.023	0.020		0.106
Mg ²⁺	0.147	−0.201	−0.111	−0.043	−0.113	0.841 ^**

*Correlation is significant at the 0.05 level (2-tailed). **Correlation is significant at the 0.01 level (2-tailed). GA: Gestational Age; BMI: Body Mass Index: DBP: Diastolic Blood Pressure; SBP: Systolic Blood Pressure. Data in boldface indicate statistical significance.