Table 6.

Model results

Risk group	Outcomes before application of either prevention scenario (baseline)		Scenario 1 (risk-based prevention)		Scenario 2 (risk-based plus screening-based prevention)
	Number of women in risk group	Early onset GBS (EOGBS) cases	Antibiotic type offered	Number of women receiving antibiotics	Antibiotic type offered	Number of women receiving antibiotics
Neonate affected by EOGBS in a previous pregnancy	214	12	IAP and broad spectrum*	192	IAP and broad spectrum*	192
Incidental detection of maternal GBS carriage	35 600	84	IAP and broad spectrum*	17 005	IAP and broad spectrum*	17 005
Pre-term delivery without the above risk factors	55 446	134	Broad spectrum*	3041	Broad spectrum*	3041
Suspected intrapartum infection at term without the above risk factors	13 036	69	Broad spectrum*	10 428	Broad spectrum* in all, preceded by IAP in 2065 screen-positive women	10 428
Term women with no antenatal or intrapartum risk factors indicating intrapartum antibiotic prophylaxis (IAP) (without screening)	607 703	122	N/A	0	IAP for women who screen group B Streptococcus GBS positive	96 260

Summary	Baseline		Scenario 1		Scenario 2
Totals for each scenario	Population	800 327 women	Treated with antibiotics	30 666	Treated with antibiotics	126 926
	EOGBS cases	421	EOGBS cases prevented	70	EOGBS cases prevented	122–127
	Deaths from EOGBS	42	Deaths from EOGBS prevented	5	Deaths from EOGBS prevented	8
	Severe disability from EOGBS	29	Severe disability from EOGBS prevented	5	Severe disability from EOGBS prevented	8–9

*Broad spectrum antibiotics given to those with suspected intrapartum infection.

N/A, not applicable.