Table 6.

Number of children by birth weight and relative risk of severe or moderate disability^* at age 5 years

Birth weight	Severe or moderate disability		Relative risk (95% CI)
	Meningitis group (n=1584)	Control group (n=1391)
Very low birth weight (<1500 g)	24/56	0/8	Not calculable
Low birth weight (1500-2500 g)	29/149	2/47	4.57 (1.13 to 18.45)
Normal birth weight (>2500 g)	113/1139	15/1076	7.22 (4.24 to 12.29)

^*Mantel-Haenszel weighted relative risk (95% CI) for all = 7.11 (4.30 to 11.73).