Table 1.
Characteristics of U.S. Children between birth and 17 years old by birth characteristics, NSCH (2011–2012)
| Variable | Total | Term born(n = 80,295) | Preterm birth(n = 10,426) | P value | Normal Birth Weight(n = 82,519) | Low Birth Weight(n = 8202) | P value |
|---|---|---|---|---|---|---|---|
| Unweighted n(weight%) | Unweighted n(weight%) | Unweighted n(weight%) | Unweighted n(weight%) | Unweighted n(weight%) | |||
| Asthma | < 0.001* | < 0.001* | |||||
| Yes | 12,839 (15%) | 10,763 (14%) | 2076 (21%) | 11,294 (14%) | 1545 (19%) | ||
| No | 77,882 (85%) | 69,532 (86%) | 8350 (79%) | 71,225 (86%) | 6657 (81%) | ||
| Gender of Child | 0.337 | < 0.001* | |||||
| Male | 46,673 (51%) | 41,091 (51%) | 5582 (52%) | 42,763 (52%) | 3910 (46%) | ||
| Female | 43,953 (49%) | 39,115 (49%) | 4838 (48%) | 39,671 (48%) | 4282 (54%) | ||
| Child’s age at interview (years) | 0.0075* | 0.0307 | |||||
| <=3 | 19,036 (22%) | 16,848 (22%) | 2188 (23%) | 17,379 (22%) | 1657 (22%) | ||
| 4~6 | 14,912 (17%) | 13,031 (17%) | 1881 (19%) | 13,383 (17%) | 1529 (20%) | ||
| 7~12 | 29,915 (33%) | 26,351 (33%) | 3564 (33%) | 27,077 (33%) | 2838 (33%) | ||
| 13~17 | 26,858 (28%) | 24,065 (28%) | 2793 (58%) | 24,680 (28%) | 2178 (26%) | ||
| Race/Ethnicity of Child | 0.001* | < 0.001* | |||||
| Hispanic | 11,758 (23%) | 10,417 (23%) | 1341 (21%) | 10,525 (23%) | 1233 (24%) | ||
| Non-Hispanic white | 59,186 (54%) | 52,727 (54%) | 6459 (51%) | 54,690 (55%) | 4496 (42%) | ||
| Non-Hispanic black | 8231 (13%) | 7069 (13%) | 1162 (17%) | 6977 (12%) | 1254 (23%) | ||
| Non-Hispanic other | 9472 (10%) | 8271 (10%) | 1201 (11%) | 8474 (10%) | 998 (11%) | ||
| Parents’ Education | 0.89 | 0.0149 | |||||
| Less than high school | 11,903 (20%) | 10,459 (20%) | 1444 (20%) | 10,569 (20%) | 1334 (22%) | ||
| High school graduate | 29,176 (32%) | 25,784 (32%) | 3392 (33%) | 26,539 (32%) | 2637 (33%) | ||
| More than high school | 44,745 (48%) | 39,774 (48%) | 4971 (47%) | 41,042 (48%) | 3703 (45%) | ||
| Family Structure | |||||||
| Currently married | 64,235 (66%) | 57,302 (67%) | 6933 (62%) | < 0.001* | 59,112 (67%) | 5123 (58%) | < 0.001* |
| Cohabiting | 5533 (8.8%) | 4839 (8.7%) | 694 (9.7%) | 4909 (8.7%) | 624 (10%) | ||
| Living apart | 10,559 (14%) | 9153 (13%) | 1406 (15%) | 9459 (13%) | 1100 (16%) | ||
| Never married | 6674 (9.1%) | 5764 (8.8%) | 910 (11%) | 5843 (8.8%) | 831 (12%) | ||
| No parents in household | 2678 (2.4%) | 2321 (2.4%) | 357 (2.7%) | 2263 (2.3%) | 415 (3.8%) | ||
| Difficulty paying for bills | < 0.001* | ||||||
| Never | 43,447 (43%) | 38,913 (43%) | 4534 (39%) | 39,832 (43%) | 3615 (42%) | ||
| Not very often | 26,836 (32%) | 23,745 (32%) | 3091 (31%) | 24,510 (32%) | 2326 (30%) | ||
| Somewhat often | 13,920 (19%) | 12,075 (18%) | 1845 (21%) | 12,415 (19%) | 1505 (20%) | ||
| Very often | 4927 (6.9%) | 4144 (6.7%) | 783 (8.7%) | 4334 (6.8%) | 593 (8.3%) | ||
| Use of cigarettes, cigars, or pipe tobacco in the household | 0.0013* | 0.0094* | |||||
| Yes | 20,950 (24%) | 18,254 (24%) | 2696 (27%) | 18,714 (24%) | 2236 (27%) | ||
| No | 68,942 (76%) | 61,303 (76%) | 7639 (73%) | 63,061 (76%) | 5881 (73%) | ||
| Litter or garbage on the street or sidewalk | 0.7236 | 0.3326 | |||||
| Yes | 13,341 (16%) | 11,772 (16%) | 1569 (16%) | 12,058 (16%) | 1283 (17%) | ||
| No | 76,024 (84%) | 67,321 (84%) | 8703 (84%) | 69,241 (84%) | 6783 (83%) |
*p < 0.05