Table 3.
Multivariate analysis of clinical factors with GBS colonization among pregnant women.
| Variables | Variable's categories | Frequency | GBS result | COR (95% CI) | P value | AOR (95% CI) | P value | |
|---|---|---|---|---|---|---|---|---|
| Positive | Negative | |||||||
| Gravidity | Primigravida | 80 | 9 (11.3) | 71 (88.7) | 0.9 (0.37–2.16) | 0.806 | ||
| Multigravida | 121 | 15 (12.4) | 106 (87.6) | 1 | ||||
|
| ||||||||
| Parity | Nullipara | 25 | 9 (36.0) | 16 (64.0) | 4.7 (1.7–13.2) | 0.003 | 1.7 (0.42–6.5) | 0.469 |
| Primipara | 73 | 4 (5.5) | 69 (94.5) | 0.49 (0.2–1.6) | 0.232 | |||
| Multipara | 103 | 11 (10.7) | 92 (89.3) | 1 | ||||
|
| ||||||||
| Gestational age | <37 weeks | 10 | 5 (50) | 5 (50) | 9.1 (2.4–34.13) | 0.001 | 4.4 (.45–19.1) | 0.259 |
| ≥37 weeks | 191 | 19 (9.9) | 172 (90.1) | 1 | ||||
|
| ||||||||
| History of UTI | Yes | 13 | 8 (53.3) | 7 (46.7) | 12.1 (4.0–37.8) | ≤0.001 | 2.9 (1.7–16.3) | 0.008 |
| No | 188 | 16 (8.6) | 170 (91.4) | 1 | ||||
|
| ||||||||
| History of PROM | Yes | 46 | 15 (32.6) | 31 (67.4) | 7.9 (3.2–19.6) | ≤0.001 | 3.5 (2.2–18.8) | 0.001 |
| No | 155 | 9 (5.8) | 146 (94.2) | 1 | ||||
|
| ||||||||
| Contraceptives used | Injectable | 48 | 7 (14.6) | 41 (85.4) | 1.14 (0.39–3.3) | 0.812 | ||
| Injection and pills | 41 | 2 (4.9) | 39 (95.1) | 0.34 (0.1–1.7) | 0.184 | |||
| Loop | 37 | 6 (16.2) | 31 (83.8) | 1.3 (0.4–4.0) | 0.656 | |||
| None | 69 | 9 (13.0) | 60 (87.0) | 1 | ||||
|
| ||||||||
| Number of ANC visited | 0–3 times | 63 | 8 (12.7) | 55 (87.3) | 1.1 (0.5–2.8) | 0.823 | ||
| 4-5 times | 138 | 16 (11.6) | 122 (88.4) | 1 | ||||
|
| ||||||||
| Previous still birth | Yes | 8 | 2 (25) | 6 (75) | 2.59 (0.5–13.6) | 0.261 | ||
| No | 193 | 22 (11.4) | 171 (88.6) | 1 | ||||
|
| ||||||||
| Previous abortion | Yes | 27 | 5 (18.5) | 22 (81.5) | 1.85 (0.63–5.47) | 0.263 | ||
| No | 174 | 19 (10.9) | 155 (89.1) | 1 | ||||
|
| ||||||||
| Vaginal discharge | Yes | 13 | 6 (42.9) | 8 (57.1) | 7.0 (2.2.-22.6) | 0.001 | 3.0 (0.62–14.6) | 0.173 |
| No | 188 | 18 (9.6) | 169 (90.4) | 1 | ||||
AOR, adjusted odds ratio; CI, confidence interval; COR, crude odds ratio; PROM, prolonged rupture of membranes; UTI, urinary tract infection; n, sample size.