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Table 4 Bivariate analysis of risk factors associated with prevalence of GBS among pregnant women, at Hawassa University Comprehensive Specialized Hospital, November 2014–March 2015 (n = 280)

From: Prevalence of group B streptococcus among pregnant women and newborns at Hawassa University comprehensive specialized hospital, Hawassa, Ethiopia

Variables Prevalence of GBS OR(95%CI) P-value
Age group 15–27 28/190 (14.7%) 0.79 (0.41–1.56) 0.51
> 28 16/90 (17.8%) 1  
Gestational age < 37 4/25 (16%) 0.9 (0.08–10.5) 0.9
37–42 38/249 (15.3%) 0.93 (0.1–8.1) 0.95
> 42 2/6 (33.3%) 1  
Gravida Primigravida 24/134 (17.9%) 1.38 (0.7–2.6) 0.34
Multigravida 20/146 (13.7) 1  
History of EOD No 20/146 (13.7%) 0.73 (0.38–1.4) 0.34
NA 24/134 (17.9%) 1  
Mode of delivery Vaginal 16/115 (13.9%) 0.69 (0.34–1.38) 0.29
CS 4/31 (12.9%) 0.88 (0.31–2.53) 0.84
NA 24/134 (17.9%) 1  
Duration of rupture of membrane 0–5 h 39/241 (16.2%) 2.1 (0.47–9.1) 0.34
6–10 h 4/15 (26.7%) 4 (0.6–25.3) 0.14
11–15 h 1/24 (4.2%) 1  
Meconium stained amniotic fluid Yes 4/36 (11.1%) 0.85 (0.3–2.3) 0.75
No 40/244 (16.4%) 1  
Other illness Yes 2/11 (18.2%) 1.2 (0.25–5.7) 0.82
No 42/269 (15.6%) 1  
  1. N total number of pregnant women, OR odds ratio, GBS group B streptococcus, CS caesarian section, NA not applicable