Table 1.
Maternal Descriptors (n=95)
| n (%) | |
|---|---|
| Age, years (n=88) | 32.9±5.6a |
| Race/ethnicity (n=91) | |
| Caucasian | 56 (62) |
| Asian | 9 (10) |
| African-American | 8 (9) |
| Other | 16 (18) |
| Declined | 2 (2) |
| Birthplace (n=90) | |
| United States | 61 (68) |
| Abroad | 29 (32) |
| Marital status (n=91) | |
| Single, never married | 13 (14) |
| Married | 76 (84) |
| Divorced | 2 (2) |
| Highest level of education (n=91) | |
| Less than high school | 3 (3) |
| High school | 13 (14) |
| College | 19 (21) |
| Graduate/professional degree | 51 (56) |
| Other | 5 (5) |
| Gravidity (n=93) | 2.2±1.4 |
| Parity (n=93) | 1.8±1.1 |
| Cigarette use during pregnancy (n=92) | 3 (3%) |
| Secondhand smoke exposure during pregnancy (n=89) | 5 (6%) |
| Cow's milk ingestion (n=80) | 54 (59%) |
| Table salt use (n=92) | |
| Regular | 62 (68) |
| Not regular | 30 (33) |
| Type of table salt use in the past 24 hours (n=53) | |
| Iodized | 35 (66) |
| Noniodized | 5 (9) |
| Do not know | 13 (25) |
| Multivitamin use (n=92) | |
| Yes | 58 (63) |
| No | 34 (37) |
| Multivitamin type (n=61) | |
| Prenatal | 50 (84) |
| Regular | 8 (13) |
| Do not know | 2 (3) |
| Multivitamin taken in the past 24 hours (n=62) | |
| Yes | 36 (58) |
| No | 26 (42) |
| Kelp or iodine use as supplements (n=87) | 0 |
Number of subjects in each row may not correspond to the subject total given missing or declined questionnaire data, and percentages may not total 100 due to rounding. The median urinary iodine concentrations for each variable are unreliable and thus are not listed because of the small sample sizes.
a
Mean±standard deviation (SD).