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Table 1 Background variables in control and intervention groups

From: Effect of dietary intervention on serum lignan levels in pregnant women - a controlled trial

 

Control

Intervention

Control

Intervention

 

Characteristic

N

N

mean

SD

mean

SD

P-value

Pre-pregnancy age

56

49

28.8

4.1

27.4

4.6

0.1051

Pre-pregnancy BMI

56

49

22.3

2.1

23.6

4.0

0.0361

Change in fiber (g/day)

53

49

-0.2

6.3

2.7

6.5

0.02161

Smoking during pregnancy

  

%

 

%

 

0.2602

   Occasionally

3

0

3.1

 

0.0

  

   Not at all

53

41

54.6

 

42.3

  

Pre-pregnancy smoking

  

%

 

%

 

0.0653

   Non-smoker/quitted

46

32

45.1

 

31.4

  

   Daily/occasionally

9

15

8.8

 

14.7

  

Education

  

%

 

%

 

0.0623

   Basic/secondary level

20

27

19.4

 

26.4

  

   Polytechnic school

12

9

11.8

 

8.9

  

   University

24

11

23.7

 

10.9

  
  1. 1) T-test
  2. 2) Fisher's Exact Test
  3. 3) Chi-square