N | Zero visits (%) | Unadjusted mean int $ (95% CI) | Adjusted mean int $ (95% CI) | |
South Africa* | ||||
Unexposed | 117 | 82.1 | 15.67 (7.59 to 23.75) | 16.10 (7.30 to 24.91) |
GBS exposed | 43 | 69.8 | 34.25 (12.77 to 55.73) | 34.22 (10.71 to 57.74) |
India† | ||||
Unexposed | 61 | 36.1 | 129.43 (66.51 to 192.34) | 133.95 (72.83 to 195.06) |
GBS exposed | 35 | 8.6 | 800.10 (396.09 to 1204.11) | 682.22 (364.28 to 1000.16) |
Kenya | ||||
Unexposed | 103 | 8.7 | 92.21 (52.53 to 131.88) | 87.23 (52.08 to 122.38) |
GBS exposed | 25 | 44.0 | 118.30 (−18.63 to 255.23) | 75.62 (−40.34 to 191.58) |
Argentina§ | ||||
Unexposed | 8 | 25.0 | 189.05 (−46.74 to 424.84) | 52.38 (−1.39 to 106.15) |
GBS exposed | 9 | 11.1 | 335.66 (−16.39 to 687.71) | 244.86 (47.38 to 442.33) |
Adjusted for age, sex, preterm birth and main caregiver’s education where possible, using mixed modelling (logit and a Generalised Linear Model with the log link and gamma distribution).
N in italics is the number of participants in each cohort.
N for adjusted models: India: 94, Kenya: 118, Argentina: 11.
Negative CIs appear because of delta method used for calculations of CIs.
*Adjusted for age, sex and preterm birth.
†p<0.001.
‡p<0.05.
iGBS, invasive Group B Streptococcus.