Table 2

Birth weight and gestational age distributions of singleton live births by ethnicity, England and Wales (2005–2006)

Black AfricanBlack CaribbeanWhite British
Mean (95% CI)Mean (95% CI)Mean (95% CI)
Mean birth weight, g3285 (3279 to 3291)3166 (3156 to 3177)3393 (3392 to 3395)
Mean gestational age, completed weeks39.11 (39.08 to 39.13)38.80 (38.75 to 38.84)39.31 (39.30 to 39.31)
Number of babies (%)Number of babies (%)Number of babies (%)
Birth weight, g
 Under 1500701 (1.8)310 (2.2)6947 (0.8)
 1500–24992107 (5.4)1121 (8.0)38 226 (4.7)
 2500–449935 436 (91.5)12 519 (88.9)756 588 (92.5)
 4500 and over505 (1.3)133 (0.9)15 983 (2.0)
 Total stated38 749 (100.0)14 083 (100.0)817 744 (100.0)
Gestational age groups, completed weeks
 Under 32785 (2.0)350 (2.4)8207 (1.0)
 32–362035 (5.2)1006 (7.0)41 170 (5.1)
 37–4134 207 (86.7)12 529 (87.1)728 501 (89.4)
 42 and over2426 (6.1)495 (3.4)36 708 (4.5)
 Total stated39 453 (100.0)14 380 (100.0)814 586 (100.0)
Mother's age at delivery, years
 Under 191548 (3.9)1376 (9.5)64 953 (7.9)
 20–246208 (15.7)3292 (22.8)156 381 (19.1)
 25–2912 181 (30.8)3275 (22.7)197 748 (24.1)
 30 and over19 651 (49.6)6468 (44.9)401 403 (48.9)
 Total stated39 588 (100.0)14 411 (100.0)820 485 (100.0)