Table 3.
Frequency of the occupational use of chemicals for more than half a day during pregnancy (MT1 and MT2 questionnaires)
| MT1 | MT2 | N | |
|---|---|---|---|
| % | % | Kappa scores | |
| Anti-cancer drug (not including your own remedy) | N = 63,576 | ||
| No | 98.7 | 98.8 | 0.54 |
| 1–3 times a month | 0.8 | 0.9 | |
| 1–6 times a week | 0.4 | 0.3 | |
| Everyday | < 0.1 | 0.1 | |
| Lead-free solder | N = 63,388 | ||
| No | 99.7 | 99.7 | 0.54 |
| 1–3 times a month | 0.1 | 0.1 | |
| 1–6 times a week | 0.1 | 0.2 | |
| Everyday | 0.1 | 0.1 | |
| Any products containing lead like solder | N = 63,388 | ||
| No | 99.7 | 99.7 | 0.45 |
| 1–3 times a month | 0.2 | 0.2 | |
| 1–6 times a week | 0.1 | 0.1 | |
| Everyday | 0.1 | 0.1 | |
| Formalin, formaldehyde | N = 63,584 | ||
| No | 99.2 | 99.2 | 0.44 |
| 1–3 times a month | 0.5 | 0.5 | |
| 1–6 times a week | 0.3 | 0.2 | |
| Everyday | 0.1 | 0.1 | |
| Microbes | N = 63,399 | ||
| No | 99.6 | 99.6 | 0.44 |
| 1–3 times a month | 0.2 | 0.2 | |
| 1–6 times a week | 0.2 | 0.1 | |
| Everyday | 0.1 | 0.1 | |
| General anesthetic for surgery at hospital | N = 63,611 | ||
| No | 99.2 | 99.1 | 0.42 |
| 1–3 times a month | 0.4 | 0.5 | |
| 1–6 times a week | 0.3 | 0.3 | |
| Everyday | 0.1 | 0.1 | |
| Photo copying machine, laser printer | N = 64,895 | ||
| No | 70.6 | 66.1 | 0.39 |
| 1–3 times a month | 8.1 | 11.4 | |
| 1–6 times a week | 14.2 | 15.2 | |
| Everyday | 7.1 | 7.3 | |
| Radiation, radioactive substances, isotopes | N = 63,385 | ||
| No | 98.1 | 98.5 | 0.38 |
| 1–3 times a month | 0.9 | 0.7 | |
| 1–6 times a week | 0.8 | 0.5 | |
| Everyday | 0.3 | 0.2 | |
| Medical sterilizing disinfectant | N = 63,931 | ||
| No | 88.5 | 86.8 | 0.37 |
| 1–3 times a month | 3.3 | 5.3 | |
| 1–6 times a week | 6.0 | 5.8 | |
| Everyday | 2.3 | 2.0 | |
| Dyestuffs (hair coloring) | N = 62,560 | ||
| No | 93.4 | 90.8 | 0.32 |
| 1–3 times a month | 5.5 | 8.0 | |
| 1–6 times a week | 0.6 | 0.7 | |
| Everyday | 0.4 | 0.5 | |
| Permanent marker | N = 64,471 | ||
| No | 70.3 | 60.5 | 0.30 |
| 1–3 times a month | 15.8 | 23.6 | |
| 1–6 times a week | 11.1 | 13.2 | |
| Everyday | 2.8 | 2.7 | |
| Paint | N = 63,569 | ||
| No | 80.0 | 72.9 | 0.29 |
| 1–3 times a month | 10.2 | 15.5 | |
| 1–6 times a week | 7.8 | 9.1 | |
| Everyday | 2.4 | 2.5 | |
| Chromium, arsenic, cadmium | N = 63,386 | ||
| No | 99.9 | 99.9 | 0.28 |
| 1–3 times a month | < 0.1 | < 0.1 | |
| 1–6 times a week | < 0.1 | < 0.1 | |
| Everyday | < 0.1 | < 0.1 | |
| Organic solvents | N = 63,471 | ||
| No | 92.9 | 91.1 | 0.27 |
| 1–3 times a month | 5.4 | 7.2 | |
| 1–6 times a week | 1.4 | 1.4 | |
| Everyday | 0.3 | 0.3 | |
| Chlorine bleach, germicide | N = 64,016 | ||
| No | 81.1 | 73.7 | 0.27 |
| 1–3 times a month | 13.2 | 19.7 | |
| 1–6 times a week | 4.9 | 5.8 | |
| Everyday | 0.8 | 0.8 | |
| Kerosene, petroleum, benzene, gasoline | N = 63,778 | ||
| No | 90.2 | 84.2 | 0.26 |
| 1–3 times a month | 7.7 | 12.5 | |
| 1–6 times a week | 2.0 | 3.2 | |
| Everyday | 0.1 | 0.1 | |
| Insecticide | N = 63646 | ||
| No | 94.3 | 91.9 | 0.21 |
| 1–3 times a month | 4.8 | 7.0 | |
| 1–6 times a week | 0.9 | 1.0 | |
| Everyday | 0.1 | 0.1 | |
| Herbicide | N = 62837 | ||
| No | 99.4 | 98.9 | 0.19 |
| 1–3 times a month | 0.6 | 1.1 | |
| 1–6 times a week | < 0.1 | < 0.1 | |
| Everyday | < 0.1 | < 0.1 | |
| Engine oil | N = 63519 | ||
| No | 99.0 | 99.2 | 0.18 |
| 1–3 times a month | 0.7 | 0.6 | |
| 1–6 times a week | 0.2 | 0.2 | |
| Everyday | 0.1 | 0.1 | |
| Mercury | N = 63,288 | ||
| No | 99.7 | 99.4 | 0.07 |
| 1–3 times a month | 0.3 | 0.5 | |
| 1–6 times a week | < 0.1 | < 0.1 | |
| Everyday | < 0.1 | < 0.1 | |
| Agricultural chemical not listed above or unidentified | N = 64,388 | ||
| No | 99.8 | No data | |
| 1–3 times a month | 0.1 | ||
| 1– 6 times a week | < 0.1 | ||
| Everyday | < 0.1 | ||
| Other chemical substances | N = 64,313 | ||
| No | 99.1 | No data | |
| 1–3 times a month | 0.2 | ||
| 1–6 times a week | 0.4 | ||
| Everyday | 0.3 | ||
The questionnaire intended to be administered during the first trimester (MT1) and that during the second/third trimester (MT2)
N number of valid responses