Pediatrics -- Kaempf et al. 117 (1): 22 Table 1

TABLE 1 Survival and Neurologic Disability Rates Among Extremely Premature Infants, as Used for PSVMC Obstetric and Neonatology Medical Staff Guidelines

Weeks at Birth Rate, %

Survival, Literature Survey Survival, VON, 2003 Survival, PSVMC, 1996–2003 Severe Neurologic Disability, Literature Survey Moderate Neurologic Disability, Literature Survey

<23 $~$ 5 8 0 ? ?

23 Formula to 23 Formula $~$ 15 32 10 $~$ 30–35 $~$ 20–30

24 Formula to 24 Formula $~$ 40 58 68 $~$ 25–30 $~$ 20–30

25 Formula to 25 Formula $~$ 60 76 74 $~$ 20–25 $~$ 20–30

26 Formula to 26 Formula $~$ 75 83 83 $~$ 15–20 $~$ 20

Severe disability indicates IQ of <70 (or >2 SD below the mean), cerebral palsy, blindness, and/or deafness. Moderate disability indicates IQ of 70 to 84 (or 1–2 SD below the mean); moderate disorders of motor skills, vision, hearing, academic achievement, social performance, and/or behavior were included in some follow-up references. VON indicates Vermont Oxford Network.