Skip to main content
. Author manuscript; available in PMC: 2013 Apr 11.
Published in final edited form as: Pediatrics. 2006 Dec;118(6):2488–2497. doi: 10.1542/peds.2006-1824

TABLE 2.

Percentage Distribution of Live Births and Infant Deaths According to Gestation for Plurality and Race, 1989–1991 and 1999–2001

Gestational Age and Years Live Births
Infant Deaths
All Pluralities
Singletons
Multiples
All Pluralities
Singletons
Multiples
All White Black All White Black All White Black All White Black All White Black All White Black
20–24 wk
 1989–1991 0.2 0.2 0.6 0.2 0.1 0.5 1.9 1.5 3.6 23.8 20.4 32.5 21.2 17.5 30.2 45.6 43.2 51.6
 1999–2001 0.3 0.2 0.7 0.2 0.1 0.6 1.9 1.6 3.6 30.9 27.2 40.4 27.1 22.9 37.5 54.9 53.3 59.7
25–28 wk
 1989–1991 0.4 0.3 1.0 0.4 0.3 0.8 3.1 2.7 5.0 13.1 12.4 15.1 11.7 10.8 14.0 24.9 25.4 23.8
 1999–2001 0.5 0.4 1.0 0.4 0.3 0.9 3.5 3.2 5.3 12.1 11.5 13.4 10.8 10.0 12.7 20.0 20.7 18.5
29–32 wk
 1989–1991 1.0 0.8 2.1 0.8 0.6 1.8 8.4 7.8 11.2 7.0 7.0 7.0 6.7 6.7 6.8 9.1 9.5 8.2
 1999–2001 1.2 1.0 2.0 0.9 0.7 1.7 10.3 10.1 11.7 6.3 6.5 5.7 6.0 6.2 5.6 8.1 8.5 6.7
33–36 wk
 1989–1991 7.5 6.5 12.3 6.8 5.8 11.6 34.9 35.0 34.8 12.3 12.5 11.8 12.5 12.6 12.1 11.0 11.7 9.3
 1999–2001 8.6 8.0 11.7 7.4 6.8 10.7 42.7 43.4 40.2 12.2 13.0 10.1 12.6 13.4 10.3 10.1 10.6 8.4
37–40 wk
 1989–1991 67.0 67.2 64.8 67.5 67.7 65.5 47.2 48.6 40.3 33.0 35.7 25.8 35.9 39.0 28.2 8.2 9.0 5.8
 1999–2001 72.7 73.1 69.5 73.8 74.3 70.7 39.0 39.3 36.3 31.8 34.4 25.0 35.8 39.1 27.8 6.4 6.4 6.2
41–43 wk
 1989–1991 23.8 25.0 19.2 24.3 25.5 19.6 4.5 4.4 5.1 10.8 12.0 7.8 11.9 13.4 8.6 1.1 1.0 1.2
 1999–2001 16.8 17.3 15.1 17.3 17.8 15.6 2.5 2.4 2.9 6.7 7.3 5.3 7.7 8.4 6.1 0.5 0.5 0.5