Table 1.
Geometric mean maternal and child urinary triclosan concentrations (ng/mL) and mean child FSIQ scores at 8 y of age according to sociodemographic, caregiving, and maternal factors among mother–child pairs in the HOME Study.
| Characteristic | (%) | GM maternal triclosana (GSD) | GM child triclosana (GSD) | Mean child FSIQ (SD) |
|---|---|---|---|---|
| Overall | 198 | 17 (3.6) | 11 (2.7) | 104 (16) |
| Child sex | ||||
| Female | 110 (56) | 15 (3.2) | 12 (2.8) | 102 (17) |
| Male | 88 (44) | 19 (4.0) | 11 (2.6) | 102 (15) |
| Child race/ethnicity | ||||
| White, non-Hispanic | 124 (62) | 17 (3.8) | 12 (2.5) | 108 (13) |
| Black, non-Hispanic | 64 (34) | 17 (3.2) | 10 (3.1) | 91 (16) |
| Other | 10 (4) | 18 (3.9) | 9 (2.6) | 107 (15) |
| Maternal Education | ||||
| College graduate or more | 95 (48) | 17 (4.0) | 13 (2.8) | 109 (13) |
| Some college | 57 (29) | 17 (3.6) | 13 (2.4) | 100 (14) |
| High school or less | 46 (23) | 16 (2.7) | 7 (2.5) | 91 (17) |
| Household income | ||||
| 53 (27) | 19 (3.8) | 15 (2.9) | 111 (12) | |
| 65 (33) | 17 (4.1) | 13 (2.5) | 104 (13) | |
| 31 (15) | 18 (3.5) | 10 (2.7) | 102 (12) | |
| 49 (24) | 15 (2.8) | 8 (2.5) | 90 (16) | |
| Marital status | ||||
| Married | 126 (64) | 18 (4.1) | 13 (2.7) | 108 (13) |
| Unmarried | 72 (36) | 15 (2.7) | 9 (2.7) | 93 (16) |
| Caregiving environmentb | ||||
| 40 (20) | 15 (3.0) | 10 (3.3) | 91 (14) | |
| 35–40 | 53 (27) | 16 (3.4) | 10 (2.5) | 99 (16) |
| 105 (53) | 18 (3.9) | 13 (2.6) | 108 (13) | |
| Maternal FSIQ | ||||
| 58 (29) | 15 (2.8) | 8 (2.5) | 91 (15) | |
| 96–109 | 47 (24) | 17 (3.1) | 12 (3.0) | 102 (14) |
| 42 (21) | 20 (4.8) | 15 (2.4) | 109 (11) | |
| 51 (26) | 17 (4.0) | 11 (2.7) | 110 (14) | |
| Neonatal intensive care unit | ||||
| Yes | 9 (5) | 23 (5.3) | 12 (2.7) | 89 (20) |
| No | 189 (95) | 17 (3.5) | 7 (1.7) | 103 (15) |
| Serum cotinine (ng/mL)c | ||||
| (Unexposed) | 88 (44) | 17 (3.4) | 12 (2.7) | 104 (15) |
| LOD–3.0 (SHS) | 92 (47) | 18 (3.8) | 11 (2.8) | 100 (16) |
| (active) | 18 (9) | 12 (3.0) | 11 (2.7) | 105 (16) |
Note: FSIQ, Full-Scale Intelligence Quotient; GM, geometric mean; GSD, Geometric Standard Deviation; HOME, Health Outcomes and Measures of the Environment study; LOD, limit of detection; SHS, secondhand smoke.
Geometric mean urinary triclosan concentrations were calculated by averaging maternal (16- and 26-wk gestation and delivery) and child (1–8 y of age) urinary triclosan concentrations.
Administered at 1 y of age; higher scores indicate greater quality and quantity of caregiving.
. Threshold of for active smoking was chosen based on results from the 1999–2004 National Health and Nutrition Examination Survey, which compared self-reported smoking status and serum cotinine levels among a representative sample of the U.S. population (Benowitz et al. 2009).