Table 1 Newborns GBS colonization by demographic and obstetrics characteristics including multivariable analysis, Northwest Ethiopia

Maternal age (yrs) Median = 25

<25

48

249

1

-

-

≥25

14

74

1.019 (0.532, 1.951)

-

-

Maternal Residence

Urban

51

268

1

-

-

Rural

11

55

0.951 (0.466, 1.942)

-

-

Maternal education

None

15

72

1.200 (0.418, 3.441)

4.800 (2.752, 8.372)

0.000004

Primary

13

118

2.269 (0.784, 6.565)

8.371 (4.701, 14.909)

0.000004

Secondary

28

109

0.976 (0.363, 2.609)

2.928 (1.851, 4.630)

0.000004

Tertiary

6

24

1

1

Maternal occupation

House wife

46

240

1

1

Employed

13

61

0.899 (0.457, 1.769)

2.244 (1.162, 4.331)

0.016

Others

3

22

1.406 (0.404, 4.890)

2.102 (0.587, 7.530)

0.254

Gestational Age

<37wks

1

2

0.681 (0.061, 7.590)

NA

NA

> /=37wks

61

321

1

NA

NA

Parity

multipara

32

164

1

1

nulipara

30

159

0.967 (0.561, 1.666)

3.641 (2.320, 5.714)

0.000

History of still birth

No

59

308

1

-

-

Yes

3

15

0.958 (0.269, 3.412)

-

-

History of abortion

No

58

294

1

-

-

Yes

4

29

1.430 (0.484, 4.223)

-

-

History of neonatal death

No

60

316

1

-

-

Yes

2

7

0.665 (0.135, 3.277)

-

-

Gravidity

Primigravida

28

156

1

1

Multigravida

34

167

0.882 (0.511, 1.522)

3.507 (2.296, 5.355)

0.000

ANC visit

0 - 3

16

108

1.444 (0.782, 2.669)

-

-

4 - 5

46

215

1

-

-

Contraceptive use

No

7

61

1

-

-

Yes

55

262

0.547 (0.237, 1.259)

-

-

History of preterm delivery

No

60

317

1

-

-

Yes

2

4

0.379 (0.068, 2.113)

-

-

Length of Premature ROM

≤1hr

48

223

1

-

-

>1hr

14

100

1.537 (0.810, 2.917)

-

-

HIV status

No

59

313

1

-

-

Yes

3

10

0.628 (0.168, 2.352)

-

-

Sex of newborn

Male

35

181

0.983 (0.568, 1.701)

-

-

Female

27

142

1

-

-

APGAR^d Score at 1 minute

<7

5

50

2.088 (0.797, 5.467)

-

-

7 - 10

57

273

1

-

-

APGAR Score at 5 minutes

<7

2

28

2.847 (0.661, 12.275)

-

-

7 - 10

60

295

1

-

-

Newborn`s weight (Kg) median =3.0

<2.5

6

34

1.098 (0.440, 2.738)

-

-

≥2.5

56

289

1

-

-

Yes

16

307

1

-

-

Resuscitation required

No

58

287

1

1

Yes

4

36

1.819 (0.623, 5.307)

3.982 (1.113, 14.239)

0.034

Newborn to mother immediate close contact

No

12

76

1.282 (0.649, 2.532)

4.219 (3.058, 5.823)

0.000

Yes

50

247

1

1

Duration of labor(hour)

4 - 12

54

262

1

-

-

13 - 24

8

61

1.572 (0.711, 3.473)

-

-