Table 3.

Neurological and Sensory Findings at 18 Months by Birth Weight Category

Birth Weight Category401 to 500 g501 to 600 g601 to 700 g701 to 800 g801 to 900 g901 to 1000 gTotal
Normal neurologic
 examination
8/14 (57)67/94 (71)142/202 (70)162/224 (72)213/272 (79)233/295 (79)825/101 (75)
 CP4 (29)16 (17)42 (21)38 (17)42 (15)45 (15)187 (17)
 Seizure disorder0 (0)4 (4)10 (5)13 (6)16 (6)14 (5)57 (5)
 Hydrocephalus with shunt0 (0)2 (2)8 (4)10 (4)11 (4)11 (4)42 (4)
Any vision impairment3/14 (21) 9/93 (10) 25/203 (12) 30/226 (13) 13/273 (5) 14/289 (5) 94/1098 (9)
 Unilateral blindness1 (7)2 (2)3 (1)6 (3)2 (7)1 (0.4)15 (1)
 Bilateral blindness2 (14)1 (1)8 (4)5 (2)2 (0.7)3 (1)21 (2)
Hearing impairment1/14 (7) 10/90 (11) 27/199 (14) 20/227 (9) 24/270 (9) 20/290 (7) 112/1091 (11)
 Wears hearing aids0 (0)3 (3)13 (7)9 (4)8 (3)5 (2)38 (3)
  • Data expressed as n (%).