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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

From: Serum calcium and magnesium levels in women presenting with pre-eclampsia and pregnancy-induced hypertension: a case–control study in the Cape Coast metropolis, Ghana

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 **

 
  1. *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.