TABLE 1.

Descriptive Statistics of Black and Hispanic Mothers and Their Infants Born in 2000: US Linked Birth and Infant Death Data Set, 2000

	Black, No. (%)	Hispanic, No. (%)
Mortality
Surviving	574 078 (98.78)	759 442 (99.51)
Died	7073 (1.22)	3759 (0.49)
Birthweight, g
≥ 2500	515 056 (88.71)	722 148 (94.67)
< 2500	65 556 (11.29)	40 678 (5.33)
Gestational age
Term birth	446 193 (84.42)	624 512 (89.83)
Preterm birth	82 321 (15.58)	70 725 (10.17)
Smoking status
Nonsmoker	494 008 (91.81)	493 940 (97.12)
Smoker	44 044 (8.19)	14 627 (2.88)
Parity
1 birth	220 620 (38.09)	285 348 (37.59)
2 births	171 655 (29.64)	231 326 (30.47)
3 births	102 106 (17.63)	141 863 (18.69)
4 births	46 553 (8.04)	60 755 (8.00)
≥ 5 births	38 227 (6.60)	39 885 (5.25)
Maternal age, y
< 15	3674 (0.63)	2479 (0.32)
15–19	113 132 (19.47)	122 280 (16.02)
20–24	190 038 (32.70)	232 515 (30.47)
25–29	131 655 (22.66)	204 255 (26.77)
30–34	87 092 (14.99)	131 245 (17.20)
35–39	45 144 (7.77)	57 879 (7.58)
40–54	10 333 (1.78)	12 445 (1.63)
Maternal education, y
0–8	13 743 (2.40)	161 846 (21.67)
9–11	131 901 (23.08)	207 902 (27.84)
12	227 898 (39.88)	222 386 (29.78)
13–15	131 674 (23.04)	99 202 (13.28)
≥ 16	66 261 (11.59)	55 525 (7.43)
Marital status
Married	180 461 (31.06)	440 331 (57.72)
Unmarried	400 523 (68.94)	322 602 (42.28)
Maternal nativity
United States	517 678 (89.52)	289 767 (38.06)
Outside United States	60 621 (10.48)	471 653 (61.94)
Same-ethnic density
0–0.99%	2594 (0.45)	12 407 (1.63)
1–4.99%	25 928 (4.46)	118 567 (15.54)
5–14.99%	147 376 (25.36)	365 678 (47.91)
15–49.99%	344 618 (59.30)	221 268 (28.99)
≥ 50%	60 635 (10.43)	45 281 (5.93)
Median income, $10 000s, mean (SD)	4.09 (0.97)	4.33 (1.03)