Baseline characteristics of enrolled mothers and fathers (median (Q1–Q3) or N (%))
| Characteristic | Mother N=158 | Father* N=158 |
|---|---|---|
| Age (years) (mean (SD)) | ||
| Overall | 30 (6.2) | 32 (6.8) |
| Missing | 0 | 5 |
| Gestational age at enrolment | ||
| Weeks | 20 (12–28) | |
| Pregnancies | ||
| First | 50 (32%) | |
| Of those with at least one pregnancy, prior pregnancies | 2 (1–4) | |
| Preferred interview/survey language | ||
| Spanish | 51 (32%) | |
| English | 107 (68%) | |
| Race | ||
| Asian | 19 (12%) | 14 (9%) |
| Black | 8 (5%) | 11 (7%) |
| Native American | 1 (1%) | 1 (1%) |
| White | 48 (30%) | 47 (30%) |
| Other | 82 (52%) | 79 (50%) |
| Missing | 0 | 7 (4%) |
| Ethnicity | ||
| Hispanic | 102 (65%) | 92 (58%) |
| Non-Hispanic | 56 (35%) | 60 (38%) |
| Missing | 0 | 6 (4%) |
| Country or region† of origin | ||
| USA | 64 (41%) | 56 (36%) |
| Mexico | 59 (37%) | 62 (39%) |
| Asia | 13 (8%) | 11 (7%) |
| Other Central/South America | 13 (8%) | 14 (9%) |
| Europe | 4 (3%) | 5 (3%) |
| Africa | 2 (1%) | 1 (1%) |
| Middle East | 2 (1%) | 1 (1%) |
| Oceania | 1 (1%) | 0 |
| Unknown | 0 | 6 (4%) |
| Living with index mother | ||
| Yes | 137 (87%) | |
| No | 21 (13%) | |
| Years of education | ||
| Overall (mean (SD)) | 13 (4.1) | 13 (4.7) |
| Less than high school (<12 years) | 45 (29%) | 49 (31%) |
| High school (12 years) | 35 (22%) | 35 (22%) |
| Some college (13–16 years) | 45 (29%) | 28 (18%) |
| Postgraduate (17+ years) | 33 (21%) | 33 (21%) |
| Missing | 0 | 12 (8%) |
| Exposure to cleaning products outside the home in work environment | ||
| Yes | 36 (23%) | |
| No | 65 (41%) | |
| NA | 57 (36%) | |
| Bathing habits | ||
| Every other day | 19 (12%) | |
| Daily | 116 (73%) | |
| More than once per day | 23 (15%) | |
*Information reported by mother at baseline visit.
†Regions include at least one participant from the following countries: other Central/South America: Brazil, Colombia, El Salvador, Guatemala, Honduras, Peru; Oceania: Australia; Asia: China, India, Japan, Philippines, Singapore, Vietnam; Africa: Ethiopia, Kenya, Sierra Leone; Middle East: Iran; Europe: Finland, Germany, Greece, Hungary, Romania, Russia, UK.
NA, not available.