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Table 1 Maternal characteristics of women with and without bacterial vaginosis during pregnancy, Washington State 2003-2013

From: Bacterial vaginosis and adverse outcomes among full-term infants: a cohort study

 

Full Term (N = 11,354)

Preterm (N = 975)

Total (N = 12,340)

BV exposed

BV unexposed

BV exposed

BV unexposed

BV exposed

BV unexposed

N = 2198

N = 9156

N = 267

N = 708

N = 2468

N = 9872

 

n

%

n

%

n

%

n

%

n

%

n

%

Age (years)*

 <20

324

14.7

666

7.3

39

14.6

56

7.9

363

14.7

723

7.3

 20-24

784

35.7

2095

22.9

79

29.6

179

25.3

866

35.1

2278

23.1

 25-29

620

28.2

2593

28.3

66

24.7

166

23.5

686

27.8

2760

28.0

 30-34

317

14.4

2375

26.0

44

16.5

188

26.6

361

14.6

2564

26.0

 35+

153

7.0

1424

15.6

39

14.6

119

16.8

192

7.8

1544

15.6

Race/Ethnicity*

 White

1268

58.8

6842

71.7

152

58.9

497

71.8

1422

58.8

6981

71.7

 Black

231

10.7

416

4.6

21

8.1

36

5.2

252

10.4

452

4.6

 Asian

183

8.5

939

10.4

28

10.9

64

9.3

212

8.8

1006

10.3

 Hispanic

410

19.0

979

10.8

39

15.1

73

10.6

449

18.6

1054

10.8

 Native American

62

2.9

218

2.4

18

7.0

22

3.2

80

3.3

240

2.5

 Other

4

0.2

9

0.1

0

0.0

0

0.0

4

0.2

9

0.1

Education*

 Less than H.S.

689

31.6

1639

18.1

89

34.1

148

21.4

779

31.9

1791

18.4

 H.S. grad/some college

1132

51.9

4134

45.8

129

49.4

323

46.6

1263

51.7

4460

45.8

 College graduate

360

16.5

3263

36.1

43

16.5

222

32.0

403

16.5

3486

35.8

Nulliparous*

3733

47.2

1035

41.4

118

45.2

309

45.2

1154

47.0

4045

41.7

Cesarean delivery*

477

21.7

2479

27.1

78

29.3

269

38.1

555

22.5

2751

27.9

Low Birth Weight (<2500 g)*

41

1.9

139

1.5

158

60.1

344

49.1

199

8.1

483

4.9

Small for gestational age

227

10.3

790

8.6

22

8.2

76

10.7

249

10.1

866

8.8

 missing

0

(0)

12

(0.13)

20

(7.49)

15

(2.12)

23

(0.93)

35

(0.35)

Smoking*

360

16.5

921

10.1

42

15.9

84

12.0

404

16.5

1006

10.3

Kotelchuck Index

 Inadequate

374

17.8

1203

15.2

29

14.2

85

16.7

403

17.5

1291

15.3

 Intermediate

475

22.6

1763

22.3

39

19.1

76

14.9

514

22.3

1839

21.8

 Adequate

899

42.7

3658

46.3

52

25.5

150

29.5

951

41.2

3808

45.2

 Adequate Plus

356

16.9

1283

16.2

84

41.2

198

38.9

440

19.1

1481

17.6

 missing

94

(4.3)

1249

(13.6)

63

(23.6)

199

(28.1)

160

(6.5)

1453

(14.7)

STI*†

296

13.5

379

4.1

34

12.7

42

5.9

330

13.4

422

4.3

Maternal comorbidities‡

236

10.8

1022

11.3

53

20.0

184

26.3

289

11.7

1207

12.4

 missing

2

(0.1)

92

(1.0)

2

(0.8)

7

(1.0)

5

(0.2)

99

(1.0)

Chorioamnionitis*

62

2.8

265

2.9

22

8.2

41

5.8

84

3.4

306

3.1

Meconium (moderate/heavy)

198

9.0

510

5.6

6

2.3

19

2.7

204

8.3

530

5.4

 missing

4

(0.2)

98

(1.1)

20

(7.5)

26

(3.7)

25

(1.0)

126

(1.3)

  1. BV bacterial vaginosis; H.S. High School, STI sexually transmitted infections
  2. *Missing data not displayed, <3.5 % in all groups
  3. †syphilis, gonorrhea, chlamydia, and/or genital herpes
  4. ‡hypertension, diabetes, and/or pre-eclampsia