Table 3.

One-year mortality among infants with and without invasive Group B Streptococcal infection, in the total population and among infants born preterm (i.e., before gestational week 37) or at term (gestational week 37 or later)^a.

	One-year mortality		OR (95% CI)
	Died	Survived
	N (%)b	N (%)b
All children
GBS infection	44 (7.0)	581 (93.0)	24.5 (18.0–33.3)
No GBS infection	3103 (0.3)	1,003,518 (99.7)	1.0 (ref.)
Premature
GBS infection	27 (13.9)	167 (86.1)	6.5 (4.3–9.8)
No GBS infection	1597 (2.4)	64,366 (97.6)	1.0 (ref.)
Term
GBS infection	17 (4.1)	400 (95.9)	28.6 (17.6–46.6)
No GBS infection	1361 (0.1)	917,058 (99.9)	1.0 (ref.)

GBS Group B Streptococcus.

^aInformation on gestational age was missing in 14 (2.2%) cases with and 22,239 (2.2%) cases without GBS infection.

^bPercentages are shown in rows.