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)
| 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 | ||
N total number of pregnant women, OR odds ratio, GBS group B streptococcus, CS caesarian section, NA not applicable