TABLE 3

Survival Probabilities for Infants With DS by Selected Maternal and Child Characteristics in 10 US Regions During 1983–2003

Births<28 d1 y5 y10 y20 y
DeathsSurvival, % (95% CI)DeathsSurvival, % (95% CI)DeathsSurvival, % (95% CI)DeathsSurvival, % (95% CI)DeathsSurvival, % (95% CI)
Maternal education (y)
 ≥121143722098.1 (97.8–98.3)78793.1 (92.7–93.6)99591.1 (90.5–91.6)103590.3 (89.7–90.9)40488.9 (87.9–89.8)
 <1241326698.4 (98.0–98.7)30992.6 (91.7–93.3)38190.4 (89.4–91.9)39989.3 (88.3–90.3)105686.0 (81.3–89.6)
 Missing9373284113117124
Plurality
 Singleton1604830898.1 (97.9–98.3)112993.0 (92.6–93.4)a142590.8 (90.4–91.3)a148690.1 (89.6–90.5)a151888.2 (87.2–89.1)a
 Multiple4401097.7 (95.8–98.8)5088.6 (85.3–91.2)a6186.0 (82.3–88.9)a6285.5 (81.8–88.6)a6384.4 (79.9–88.0)a
 Missing1801333
CHDs
 No857617697.9 (97.6–98.2)34396.0 (95.5–96.4)b41795.0 (94.5–95.5)b44494.4 (93.8–94.9)b46093.0 (92.0–93.9)b
 Yes793014298.2 (97.9–98.5)83789.6 (88.9–90.2)b107286.0 (85.2–86.7)b110785.0 (84.1–85.8)b112482.2 (80.1–84.1)b
 Missing0
Birth cohort
 1983–198924545197.9 (97.2–98.4)21391.3 (90.0–92.4)b29288.1 (86.8–89.3)b31087.4 (86.0–88.6)b33485.7 (84.1–87.1)b
 1990–1996544110998.0 (97.6–98.3)47791.2 (90.5–92.0)b58989.2 (88.3–90.0)b62488.4 (87.6–89.3)b
 1997–2003861115898.2 (97.9–98.4)49094.3 (93.8–94.8)b60892.5 (91.9–93.0)b
  • —, no estimates were produced because of small numbers.

  • a P < .001.

  • b P < .0001.