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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.
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