Table 1.
Demographic and Health-Related Characteristics of Analytical Samplea, According to Race/ethnicity in 1981, 1992, and 2006b, National Longitudinal Study of Youth.
| Characteristic | 1981 (N = 3943) | 1992 (N = 2649) | 2006 (N = 2415) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Whitec | Hispanic | Black | White | Hispanic | Black | White | Hispanic | Black | |
| 64.2d (2533) | 15.2 (601) | 20.5 (809) | 57.4 (1521) | 18.8 (499) | 23.7 (629) | 57.9 (1398) | 17.6 (426) | 24.5 (591) | |
| Mean (SD) | |||||||||
| Age, years | 20.1 (2.3) | 19.6 (2.2) | 19.6 (2.2) | 31.3 (2.1) | 30.9 (2.2) | 30.9 (2.1) | 44.9 (2.1) | 44.6 (2.2) | 44.6 (2.1) |
| Weight, kg | 57.8 (9.8) | 55.9 (8.9) | 60.8 (12.0) | 65.7 (14.6) | 65.7 (14.6) | 73.1 (17.5) | 72.8 (17.0) | 73.7 (16.8) | 82.2 (19.9) |
| Height, cm | 164.1 (6.8) | 159.8 (6.8) | 163.3 (8.0) | 164.3 (6.8) | 159.8 (6.7) | 163.4 (7.9) | 164.4 (6.7) | 159.9 (7.0) | 163.6 (8.0) |
| Body Mass Indexf | 21.5 (3.4) | 21.9 (3.3) | 22.9 (4.6) | 24.3 (5.3) | 25.7 (5.6) | 27.4 (6.7) | 26.9 (6.1) | 30.8 (7.6) | 28.8 (6.5) |
| % (n) | |||||||||
| <18.5 | 9.7 (247) | 7.6 (46) | 8.4 (68) | 3.1 (47) | 1.0 (5) | 3.5 (22) | 0.8 (11) | 0.2 (1) | 0.8 (5) |
| 18.5–24.9 | 76.5 (1937) | 71.6 (430) | 68.0 (550) | 59.0 (898) | 45.8 (229) | 34.3 (216) | 39.5 (552) | 23.0 (98) | 17.8 (105) |
| 25.0–29.9 | 10.0 (252) | 17.3 (104) | 15.7 (127) | 23.3 (355) | 30.3 (151) | 28.6 (180) | 29.7 (416) | 35.7 (152) | 30.3 (179) |
| ≥30 | 3.8 (96) | 3.5 (21) | 7.9 (64) | 14.5 (221) | 22.9 (114) | 33.5 (211) | 30.0 (419) | 41.1 (175) | 51.1 (302) |
| Parity | |||||||||
| 0 | 100 (2533) | 100 (601) | 100 (809) | 40.7 (619) | 35.3 (176) | 40.5 (255) | 22.3 (311) | 18.8 (80) | 28.6 (169) |
| 1 | 0 (0) | 0 (0) | 0 (0) | 23.2 (353) | 23.0 (115) | 23.9 (150) | 18.5 (259) | 17.1 (73) | 21.5 (127) |
| ≥2 | 0 (0) | 0 (0) | 0 (0) | 36.1 (549) | 41.7 (208) | 35.6 (224) | 59.2 (828) | 64.1 (273) | 49.9 (295) |
| Marital status | |||||||||
| Never married | 83.3 (2110) | 86.5 (520) | 93.6 (757) | 19.3 (294) | 27.9 (129) | 46.1 (290) | 8.0 (112) | 16.0 (68) | 31.3 (185) |
| Has married | 16.7 (423) | 13.5 (81) | 6.4 (52) | 80.7 (1227) | 72.1 (360) | 53.9 (339) | 92.0 (1286) | 84.0 (358) | 68.7 (406) |
| Parental educatione | |||||||||
| < 12 years | 18.5 (470) | 54.9 (330) | 40.4 (327) | 15.8 (240) | 54.7 (273) | 41.2 (259) | 15.5 (216) | 55.2 (235) | 41.8 (247) |
| 12 years | 42.8 (1083) | 27.5 (165) | 35.7 (289) | 44.0 (670) | 28.3 (141) | 36.6 (230) | 43.7 (611) | 27.9 (119) | 35.5 (210) |
| > 12 years | 38.7 (980) | 17.6 (106) | 23.9 (193) | 40.2 (611) | 17.0 (85) | 22.2 (140) | 40.8 (571) | 16.9 (72) | 22.7 (134) |
| Family poverty status | |||||||||
| Not in poverty | 86.7 (2195) | 75.5 (454) | 68.0 (550) | 92.7 (1410) | 84.4 (421) | 76.9 (484) | 92.4 (1292) | 85.9 (366) | 80.9 (478) |
| In poverty | 13.3 (338) | 24.5 (147) | 32.0 (259) | 7.3 (421) | 15.6 (78) | 23.1 (145) | 7.6 (106) | 14.1 (60) | 19.1 (113) |
a
Results in this table were for the unweighted analytic sample.
b
The analytical sample used for this table included women with complete data at baseline. For 1992 and 2006, the results describe the subset of women with available weight for that year.
c
White ethnicity includes other categories.
d
Mean (standard deviation) or percent (n).
e
Parental education was defined as the highest level of education achieved by either parent.
f
Weight (kg)/height (m)2