Table IV. Characteristics of respondents with live births who breast-fed for 6 months or longer (n = 3299).
| Characteristics* | Breast-fed ≥6 mo (%)† | P value‡ |
|---|---|---|
| Age (y) (n = 3226) | <.001 | |
| <20 (n = 276) | 20 | |
| 20-24 (n = 756) | 23 | |
| 25-29 (n = 1095) | 35 | |
| 30-34 (n = 785) | 46 | |
| 35+ (n = 314) | 44 | |
| Parity (n = 3251) | <.001 | |
| Primiparous (n = 1505) | 28 | |
| Multiparous (n = 1746) | 40 | |
| Marital status (n = 3299) | <.001 | |
| Married (n = 2582) | 37 | |
| Unmarried (n = 717) | 22 | |
| Race/ethnicity (n = 3299) | <.001 | |
| African American (n = 902) | 24 | |
| White (n = 1852) | 37 | |
| Hispanic (n = 383) | 26 | |
| Other† (n = 162) | 28 | |
| Education (n = 3299) | <.001 | |
| Less than high school (n = 426) | 24 | |
| High school graduate (n = 1088) | 31 | |
| Some college (n = 976) | 32 | |
| College graduate+ (n = 809) | 46 | |
| Household income (n = 3299) | <.001 | |
| <$20,000 (n = 1258) | 29 | |
| $20,000-$39,999 (n = 1098) | 34 | |
| ≥$40,000 (n = 943) | 41 | |
| Region (n = 3299) | <.001 | |
| Northeast (n = 656) | 40 | |
| North central (n = 756) | 30 | |
| South (n = 1054) | 30 | |
| West (n = 833) | 38 | |
| Wantedness of pregnancy (n = 3299) | NS | |
| Yes (n = 1956) | 36 | |
| No (n = 1343) | 32 | |
| Initiation of prenatal care (n = 3299) | NS | |
| None (n = 29) | 22 | |
| After first trimester (n = 417) | 30 | |
| First trimester (n = 2853) | 35 | |
| Preterm labor interventions (n = 3299) | .001 | |
| Yes (n = 1030) | 29 | |
| No (n = 2269) | 36 | |
| Private insurance coverage for prenatal care (n = 3270) | .008 | |
| Yes (n = 2054) | 36 | |
| No (n = 1216) | 31 | |
| Government insurance or program used for prenatal care (n = 3270) | <.001 | |
| Yes (n = 693) | 24 | |
| No (n = 2577) | 36 | |
| Self-paid (own income or relative's income) for prenatal care (n = 3270) | NS | |
| Yes (n = 1182) | 35 | |
| No (n = 2088) | 34 | |
| Other source (eg, Indian, military) paid for prenatal care (n = 3270) | .07 | |
| Yes (n = 180) | 42 | |
| No (n = 3090) | 34 | |
| Childbirth classes (n = 3299) | <.001 | |
| Yes (n = 2180) | 38 | |
| No (n = 1119) | 25 | |
| Cigarette smoking during pregnancy (n = 3299) | <.001 | |
| Yes (n = 554) | 22 | |
| No (n = 2745) | 37 | |
| Alcohol use during pregnancy (n = 3299) | .055 | |
| Yes (n = 684) | 38 | |
| No (n = 2615) | 33 | |
| Drug use during pregnancy (n = 3299) | NS | |
| Yes (n = 72) | 29 | |
| No (n = 3227) | 35 | |
| Birth weight (g) (n = 3297) | <.001 | |
| <2500 (n = 611) | 21 | |
| ≥2500 (n = 2686) | 35 | |
| Gestational age (wk) (n = 3188) | <.001 | |
| <37 (n = 502) | 23 | |
| Completed 37 (n = 2686) | 35 | |
| Postpartum visit (n = 3299) | .050 | |
| Yes (n = 2866) | 35 | |
| No (n = 433) | 29 |
n = unweighted number of responses. NS, Not significant.
*
Analyses exclude women who did not initiate breast-feeding.
†
All percentages are weighted.
‡
P value derived from comparisons made across all strata for each characteristic.