Table 4

Risk of EOGBS in prescreening, screening and postscreening periods with and without adjustment for ethnicity

ReferenceComparatorUnadjustedEthnicity adjusted
PeriodPeriodRisk ratio
(95% CI)
p ValueAdjusted risk ratio
(95% CI)
p Value
Prescreen*Screening†0.33 (0.10 to 1.10)0.070.36 (0.11 to 1.19)0.09
Postscreening‡1.81 (0.84 to 3.88)0.131.89 (0.87 to 4.11)0.11
Screening†Postscreening‡5.42 (1.47 to 20.0)0.015.67 (1.53 to 21.0)0.009
Pre+post screening* Screening†0.29 (0.09 to 0.96)0.040.31 (0.09 to 1.00)0.05
  • *January–December 2013.

  • †March 2014-December 2015.

  • ‡April 2016-March 2017.

  • EOGBS, early-onset group B Streptococcus.