Table 1.
The baseline characteristics of maternal GBS colonization.
| Characteristics | Total (n = 310) | Weeks of gestation, n (%)** | p value | |
|---|---|---|---|---|
| n (%) | ≥ 35 (n = 129) | < 35 (n = 180) | ||
| Clinical and obstetrics | ||||
| Total number of positive isolates | 310 (8.02)* | 129 (3.34)* | 180 (4.66)* | 0.004 |
| Maternal mean age (range) | 30.49 (18–54) | 31.14 (18–49) | 30.03 (18–54) | 0.150b |
| Mean gestational age (range) | 31.32 (8–41.2) | 38.28 (35–41.2) | 26.33 (8–34.6) | < 0.001b |
| Preterm birth | 6 (1.94) | 0 (0) | 6 (3.33) | 0.043a |
| Stillbirth | 12 (3.87) | 1 (0.78) | 11 (6.11) | 0.036a |
| Primiparous | 129 (41.61) | 71 (55.04) | 58 (32.22) | < 0.001 |
| 2nd Parity | 62 (20) | 22 (17.05) | 40 (22.22) | 0.329 |
| 3rd Parity | 30 (9.68)** | 12 (9.3) | 17 (9.44) | 1 |
| 4th Parity | 10 (3.23) | 3 (2.33) | 7 (3.89) | 0.530a |
| 5th Parity | 1 (0.32) | 1 (0.78) | 0 (0) | 0.420a |
| Parity (not available) | 78 (25.16) | 20 (15.5) | 58 (32.22) | 0.001 |
| In vitro fertilization (IVF) | 55 (17.74) | 8 (6.2) | 47 (81.67) | < 0.001 |
| Occupation | ||||
| Self-employed | 103 (33.23)** | 43 (33.33) | 59 (32.78) | 1 |
| Office worker | 77 (24.84) | 37 (28.68) | 40 (22.22) | 0.245 |
| Teacher | 62 (20) | 24 (18.6) | 38 (21.11) | 0.69 |
| Factory worker | 31 (10) | 11 (8.53) | 20 (11.11) | 0.579 |
| Farmer | 24 (7.74) | 13 (10.08) | 11 (6.11) | 0.285 |
| Student | 5 (1.61) | 0 (0) | 5 (2.78) | 0.077a |
| Health care worker | 4 (1.29) | 1 (0.78) | 3 (1.67) | 0.643a |
| Engineer | 2 (0.65) | 0 (0) | 2 (1.11) | 0.512a |
| Housewife | 2 (0.65) | 0 (0) | 2 (1.11) | 0.512a |
| Total | 310** | 129 (41.75) | 180 (58.25) | < 0.001 |
NS nonsignificant.
*Calculated for the total study population (n = 3,863).
**Gestational age was not available for one participant.
aFisher's exact test.
bWilcoxon rank-sum test.