TABLE 3

Trends and Characteristics in Birth Prevalence (Prev) of Congenital Spastic CP Per 1000 1-y Survivors by Birth Weight, Gestational Age, and Race/Ethnicity, Birth Years 1985 to 2002

Characteristic1985 to 19881992 to 19961998 to 2002Average Annual Prevalence, 1985 to 2002NHB:NHW PR (95% CI)aP, Cochran–Armitage Trend Test
nPrevnPrevnPrev
Birthweight overall
 NHW811.4701.2761.31.30.742
 NHB802.21172.41352.42.41.8 (1.5 to 2.1)0.664
<1500 g
 NHW2669.02048.72139.350.70.048b
 NHB3148.55757.66853.253.71.06 (0.8 to 1.4)0.776
1500 to 2499 g
 NHW186.9166.0165.26.00.422
 NHB175.2214.7193.74.40.7 (0.5 to 1.1)0.280
≥2500 g
 NHW370.7340.6390.70.70.737
 NHB321.0390.9481.01.01.4 (1.1 to 1.9)0.889
Gestational age overall
 NHW761.4701.3761.41.40.922
 NHB712.11172.81352.72.61.9 (1.6 to 2.3)0.156
<32 wks
 NHW2655.72344.72236.144.60.125
 NHB2530.56147.56242.841.70.9 (0.7 to 1.2)0.245
32 to 36 wks
 NHW133.1112.5183.43.10.762
 NHB91.9183.0192.92.70.9 (0.6 to 1.3)0.346
≥37 wks
 NHW370.7360.7360.70.70.812
 NHB371.3380.9541.11.11.6 (1.2 to 2.0)0.493
  • a NHW children served as the referent group.

  • b Significant at P < .05.