Table 1.
Demographic characteristics of CCCEH subjects with phthalate measurements.
| Characteristic | Full study (n = 246) | 48-hr monitoring (n = 96) | 6-week monitoring (n = 32) |
|---|---|---|---|
| Age [years (mean ± SD)] | 25.6 ± 4.6a | 25.1 ± 4.3b | 26.0 ± 5.0 |
| Gestational age [weeks (mean ± SD)] | 39.2 ± 1.9c | 39.3 ± 1.6d | 39.2 ± 3.1e |
| Dates of enrollment [years (range)] | 1999–2005 | 2000–2005 | 2002–2004 |
| Years of education | |||
| Missing | 3 (1) | 3 (3) | 0 |
| < High school | 91 (37) | 38 (41) | 17 (53) |
| High school or GED | 89 (37) | 33 (36) | 9 (28) |
| > High school | 63 (26) | 22 (23) | 6 (19) |
| Ethnicity | |||
| Missing | 4 (2) | 3 (3) | 0 |
| Dominican/Dominican American | 179 (74) | 75 (81) | 25 (78) |
| African American | 63 (26) | 18 (19) | 7 (22) |
| Marital status | |||
| Missing | 4 (2) | 3 (3) | 0 |
| Never married | 152 (62) | 61 (66) | 21 (66) |
| Married | 76 (31) | 30 (32) | 8 (25) |
| Separated, widowed, or divorced | 14 (6) | 2 (2) | 3 (9) |
| Household income (US$) | |||
| Missing | 31 (13) | 14 (15) | 6 (19) |
| < 10,000 | 94 (44) | 37 (45) | 11 (42) |
| 10,000–30,000 | 96 (47) | 35 (43) | 14 (54) |
| > 30,000 | 25 (9) | 10 (12) | 1 (4) |
GED, General Educational Development. Values are no. (%) except where indicated.
a
Four missing.
b
Three missing.
c
Thirty-three missing.
d
Five missing.
e
Two missing.