Table 1.
Characteristics of the study sampleat baseline by cohort and pooled,n (%)
| Characteristic | MSSM | CCCEH | HOME | Pooled |
|---|---|---|---|---|
| Total (N) | 151 | 339 | 217 | 707 |
| Maternal age at delivery (years) | ||||
| < 20 | 42 (28) | 47 (14) | 13 (6) | 102 (14) |
| 20–24 | 53 (35) | 121 (36) | 37 (17) | 211 (30) |
| 25–29 | 21 (14) | 100 (30) | 62 (29) | 183 (26) |
| ≥ 30 | 35 (23) | 71 (21) | 105 (48) | 211 (30) |
| Race/ethnicity | ||||
| Non-Hispanic white | 31 (21) | 0 (0) | 135 (62) | 166 (23) |
| Non-Hispanic black | 41 (27) | 120 (35) | 69 (32) | 230 (33) |
| Hispanic | 76 (50) | 219 (65) | 4 (2) | 299 (42) |
| Other | 3 (2) | 0 (0) | 9 (4) | 12 (2) |
| Maternal education | ||||
| <High school | 34 (23) | 124 (37) | 20 (9) | 178 (25) |
| High school or GED | 34 (23) | 126 (37) | 27 (12) | 187 (26) |
| Some college | 45 (30) | 74 (22) | 64 (29) | 183 (26) |
| ≥ College degree | 38 (25) | 15 (4) | 106 (49) | 159 (22) |
| Mother worked during pregnancy (yes) | 92 (61) | 199 (59) | 181 (83) | 472 (67) |
| Parity (multiparous) | 0 (0) | 188 (55) | 117 (54) | 305 (43) |
| Maternal smoking during pregnancy (yes) | 26 (17) | 0 (0) | 22 (10) | 48 (7) |
| Pre-pregnancy body mass index (kg/m2) | ||||
| < 18.5 | 9 (6) | 16 (5) | 7 (4) | 32 (5) |
| 18.5–24.9 | 90 (60) | 170 (51) | 72 (43) | 332 (51) |
| 25–29.9 | 37 (25) | 75 (23) | 48 (29) | 160 (25) |
| ≥ 30 | 15 (10) | 70 (21) | 40 (24) | 125 (19) |
| Missing | 0 | 8 | 50 | 58 |
| Gestational weight gain (lb) | ||||
| < 25 | 21 (16) | 77 (25) | 75 (45) | 173 (29) |
| 25–34.9 | 38 (29) | 79 (26) | 38 (23) | 155 (26) |
| 35–44.9 | 26 (20) | 73 (24) | 35 (21) | 134 (22) |
| ≥ 45 | 45 (35) | 74 (24) | 19 (11) | 138 (23) |
| Missing | 21 | 36 | 50 | 107 |
| Year of urine collection | ||||
| 1998–2000 | 133 (88) | 94 (28) | 0 (0) | 227 (32) |
| 2001–2003 | 18 (12) | 125 (37) | 26 (12) | 169 (24) |
| 2004–2006 | 0 (0) | 120 (35) | 191 (88) | 311 (44) |
| Child's sex (male) | 80 (53) | 161 (47) | 94 (43) | 335 (47) |
| Breastfed (ever) | 94 (63) | 256 (76) | 176 (81) | 526 (75) |
| Missing | 1 | 4 | 1 | 6 |
Columbia Center for Children’s Environmental Health (CCCEH), Health Outcomes and Measures of the Environment Study (HOME), Mount Sinai School of Medicine Center for Children’s Environmental Health (MSSM)