Variable

Case (N = 75)

Control (N = 75)

t-test

p-value

Serum magnesium (mmol/L)

0.5779 (±0.1658)

0.7296 (±0.1364)

6.120

0.000

Age (years)

28.52 (±4.82)

31.00 (±4.11)

3.39

0.001

Parity

0.800

1.40

3.40

0.001

Gravidity

2.400

3.04

2.25

0.007

No of abortions

0.56

0.60

0.00

1.00

No of children alive

0.86

1.39

2.48

0.014

Gestational age at presentation (weeks)

36.5

28.7

10.80

0.00