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Table 5 Association between obstetric factors and GBS colonization among pregnant women at three health institutions (n = 281)

From: Group B streptococci vaginal colonization and drug susceptibility pattern among pregnant women attending in selected public antenatal care centers in Addis Ababa, Ethiopia

Obstetric Factors

Total

GBS culture

COR (95% C.I)

p-valuea

AOR (95% C.I)

p-valueb

GBS negative

N (%)

GBS positive

N (%)

ANC visit

 One times

6

5(83.3)

1(16.7)

1.12 (0.13–10.1)

0.917

  

 Two times

37

32(86.5)

5(13.5)

0.88 (0.31–2.51)

0.808

  

 Three times

99

85(85.9)

14(14.1)

0.93 (0.45–1.92)

0.836

  

 Four times

139

118(85.4)

21(14.6)

1

   

Type of Gravida

 Primigravida

88

74(84.1)

14(15.9)

1.16 (0.58–2.35)

0.673

  

 Multigravida

193

166(86)

27(14)

1

   

Still birth

 No

268

228(85.1)

40(14.9)

1

   

 Yes

13

12(92.3)

1(7.7)

0.48 (0.06–3.76)

0.480

  

Abortion

 No

211

180(85.3)

31(14.7)

1

   

 Yes

70

60(85.7)

10(14.3)

0.97 (0.45–2.09)

0.934

  

HIV Infection

 No

256

221(86.3)

35 (13.7)

1

 

1

 

 Yes

25

19 (76)

6 (24)

1.99 (0.75–5.34)

0.170

2.8 (0.97–8.11)

0.057

  1. 1logical reference; CI Confidence interval, COR Crude odds ratio, AOR Adjusted odds ratio, N Number; % Percentage; a p-value obtained by binary; b p-value obtained by multiple logistic regression; Adjusted for HIV status