The preterm birth rate was 7.7% (range: 5 - 10).
The preterm deliveries with labour or ROM less than 2 hours before delivery was 17.9% (alternative value: 100).
The term mothers with fever were 2.5%.
The term mothers with no fever but ROM at least 8 hours were 9%.
The adherence to IPA administration was 100% (range: 40 - 90).
The efficacy of IPA was 100% (alternative value: 90%).
The GBS rate was 0.29 (alternative value: 0.79%) without IPA in preterm, 1.38 in term with fever, 0.19 in term with no fever but ROM at least 18 hours, and 0.04 in term with no fever and ROM less than 18 hours.
The preterm GBS cases with long-term sequelae were 11.1 (range: 5 - 18).
The preterm GBS cases with death were 15.8 (range: 10 - 20).
The preterm infants without GBS with death were 4.3.
The term GBS cases with long-term sequelae attributable to GBS were 1.6 (range: 5 - 14).
The term GBS cases with death attributable to GBS were 0 (range: 1 - 10).
The term infants without early onset GBS with death were 0.
The rate of maternal anaphylactic reactions was 0.001 (alternative value: 0).
The maternal death rate after anaphylactic reactions was 10 (alternative value: 0).
The number of life-years lost because of fatal anaphylactic reactions was 54 (27 after 3% discount rate).
The number of life-years lost due to fatal early-onset GBS disease was 81 (31 after 3% discount rate).