Table 2 Workload characteristics after becoming pregnant as reported via second/third trimester (MT2) questionnaire in the Japan Environment and Children’s Study (JECS)
Variables | N | % |
|---|---|---|
Frequency of lifting something weighing more than 10 kg (including a child) after becoming pregnant | 97,587 | |
Never | 32,133 | 32.9 |
1–3 times a month | 17,251 | 17.7 |
1–4 times a week | 15,582 | 16.0 |
5 times a week or more | 32,621 | 33.4 |
Living or working in a noisy environment after becoming pregnant | 97,502 | |
No | 87,260 | 89.5 |
Yes | 10,242 | 10.5 |
Frequency of working sometime between 10 p.m. and dawn after becoming pregnant | 97,491 | |
Never | 89,394 | 91.7 |
1–3 times a month | 4614 | 4.7 |
1–4 times a week | 3002 | 3.1 |
5 times a week or more | 481 | 0.5 |
Frequency of working in a hot place that makes one sweaty after becoming pregnant | 97,472 | |
Never | 89,385 | 91.7 |
1–3 times a month | 3979 | 4.1 |
1–4 times a week | 3059 | 3.1 |
5 times a week or more | 1049 | 1.1 |
Frequency of going in and out of a commercial refrigerator or freezer after becoming pregnant | 97,396 | |
Never | 93,039 | 95.5 |
1–3 times a month | 1506 | 1.6 |
1–4 times a week | 1967 | 2.0 |
5 times a week or more | 884 | 0.9 |
Frequency of using a tool/equipment or riding a vehicle with a strong vibration after becoming pregnant | 97,453 | |
Never | 95,911 | 98.4 |
1–3 times a month | 939 | 1.0 |
1–4 times a week | 383 | 0.4 |
5 times a week or more | 220 | 0.2 |