Table 2. Maternal occupational exposure in different time periods relative to the birth of their child.
Exposure time period | Cases/controls | OR | 95% CI | |
---|---|---|---|---|
All solvents combined | ||||
Any time before birth | Non-exposed | 262/856 | 1.00 | ref. |
Exposed | 31/79 | 1.16 | 0.71–1.90 | |
In the year before birth | Non-exposed | 287/918 | 1.00 | ref. |
|
Exposed |
6/17 |
1.19 |
0.42–3.35 |
Benzene | ||||
Any time before birth | Non-exposed | 280/899 | 1.00 | ref. |
Exposed | 13/36 | 0.94 | 0.45–1.97 | |
In the year before birth | Non-exposed | 291/931 | 1.00 | ref. |
|
Exposed |
2/4 |
2.36 |
0.22–25.7 |
Other aromatics | ||||
Any time before birth | Non-exposed | 279/887 | 1.00 | ref. |
Exposed | 14/48 | 0.66 | 0.31–1.38 | |
In the year before birth | Non-exposed | 289/926 | 1.00 | ref. |
|
Exposed |
4/9 |
1.51 |
0.37–6.16 |
Aliphatics | ||||
Any time before birth | Non-exposed | 267/876 | 1.00 | ref. |
Exposed | 26/59 | 1.29 | 0.74–2.27 | |
In the year before birth | Non-exposed | 288/921 | 1.00 | ref. |
|
Exposed |
5/14 |
1.20 |
0.38–3.81 |
Chlorinated | ||||
Any time before birth | Non-exposed | 289/932 | 1.00 | ref. |
Exposed | 3/4 | 8.79 | 0.96–80.7 | |
In the year before birth | Non-exposed | 293/935 | — | — |
Exposed | 0/0 | — | — |
Abbreviations: CI=confidence interval; OR=odds ratio.
All models are adjusted for frequency-matching variables (child's sex, age at diagnosis, and state of residence), best parental education and occupational exposure to diesel exhaust.