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Table 1 Characteristics of 16,861 children with at least two length/height measurements and 12,463 with complete data on all covariables

From: Socioeconomic differences in childhood length/height trajectories in a middle-income country: a cohort study

 

Girls

Boys

 

All available girls

Those with complete data

Those with incomplete data

P for diff1

All available boys

Those with complete data

Those with incomplete data

P for diff1

N

8,139

6,010

2,129

8,722

6,453

2,269

 

n

Mean

SD2

n

Mean

SD

n

Mean

SD

n

Mean

SD

n

Mean

SD

n

Mean

SD

Birth length, cm

8,139

51.6

2.0

6,010

51.7

2.1

2,129

51.4

2.0

<0.001

8,722

52.3

2.2

6,453

52.3

2.2

2,269

52.1

2.2

<0.001

Birth weight, kg

8,139

3.4

0.4

6,010

3.4

0.4

2,129

3.3

0.4

<0.001

8,722

3.5

0.4

6,453

3.5

0.4

2,269

3.5

0.4

0.004

Mid-parental height3

6,010

170.2

4.9

6,010

170.2

4.9

0

-

-

-

6,453

170.2

4.9

6,453

170.2

4.9

0

-

-

-

 

n

%

 

n

%

 

n

%

  

n

%

 

n

%

 

n

%

  

Maternal education

                    

 Initial/incomplete/common secondary

2,943

36

 

2,075

35

 

868

41

 

<0.001

3,143

36

 

2,252

35

 

891

39

 

0.001

 Advanced secondary/partial university

4,085

50

 

3,099

52

 

986

46

  

4,395

50

 

3,321

51

 

1,074

47

  

 Completed university

1,111

14

 

836

14

 

275

13

  

1,184

14

 

880

14

 

304

13

  

Urban residence (versus rural)

4,715

58

 

3,287

55

 

1,428

67

 

<0.001

5,172

59

 

3,567

55

 

1,605

71

 

<0.001

Residence in West Belarus (versus East)

4,135

51

 

3,148

52

 

987

46

 

<0.001

4,503

52

 

3,483

54

 

1,020

45

 

<0.001

In breastfeeding promotion arm

4,236

52

 

3,023

50

 

1,213

57

 

<0.001

4,517

52

 

3,219

50

 

1,298

57

 

<0.001

Maternal smoking

                    

 Unknown

1,682

21

 

239

4

 

1,443

68

 

<0.001

1,807

21

 

277

4

 

1,530

67

 

<0.001

 Ever

1,017

13

 

750

12

 

267

13

  

1,089

12

 

788

12

 

301

13

  

 Never

5,440

67

 

5,021

84

 

419

20

  

5,826

67

 

5,388

84

 

438

19

  

Older siblings4

                    

 None

4,694

58

 

3,307

55

 

1,387

65

 

<0.001

5,059

58

 

3,582

56

 

1,477

65

 

<0.001

 1

2,761

34

 

2,187

36

 

574

27

  

2,912

33

 

2,311

36

 

601

27

  

 2 or more

684

8

 

516

9

 

168

8

  

750

9

 

560

9

 

190

8

  
  1. 1p for difference between those with complete data to those with incomplete data, for those with incomplete data any data available is compared (ttest and chi squared test).
  2. 2SD = standard deviation.
  3. 32,129 girls and 2,269 boys had missing information on mid-parental height recorded when the child was aged 6.5 years.
  4. 41 boy had missing information on older siblings recorded at child’s birth.
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BMC Public Health

ISSN: 1471-2458

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