Characteristics

Treatments

t

p values

Vitamin C

(n = 30)

Placebo

(n = 30)

Maternal age (year)

x (SD)

Range

25.6 (3.8)

19 - 30

25.8 (3.2)

18 - 30

0.78

0.437

Gestational age (week)

x (SD)

Range

10.8 (0.8)

10 - 12

10.9 (0.9)

10 - 12

0.30

0.769

Parity

0 s

1

2

3

16

9

4

1

16

9

4

1

1.0