Table 1—

Selected characteristics of the study population stratified by race

WhiteBlack
n1,190865
Maternal age (years)1,190 27.4 ± 6.4865 24.1 ± 5.4*
Maternal height (inches)1,190 65 ± 2.5865 65 ± 2.8
BMI categories
 Under226 (19)121 (14)*
 Normal623 (52)363 (42)
 Over127 (11)116 (13)
 Obese214 (18)265 (31)
Marital status
 Single273 (23)605 (70)*
 Married822 (69)196 (23)
 Other94 (8)63 (7)
Maternal education (years)1,188 14.1 ± 3.2864 12.5 ± 2.1*
Poverty index (n = 1,778)
 Low <185%445 (41)540 (77)*
 Medium 185–350%229 (21)127 (18)
 High ≥350%403 (37)34 (5)
Parity1,187 0.76 ± 0.93862 0.98 ± 1.2*
Smoker (n = 1,885)335 (30)145 (19)*
Participated in physical activity352 (31)110 (14)*
Gestational age at delivery (weeks)1,190 38.9 ± 2.1865 38.6 ± 2.3
1-h 50-g GCT (mg/dl)1,185 110 ± 27864 102 ± 25*
  • Data are n and means ± SD or n (%).

  • *

    * Indicates significant difference between black and white women, P ≤ 0.001;

  • indicates significant difference between black and white women, P ≤ 0.01.