Table 1 Participant characteristics (n = 12,226)
n | % | ||
|---|---|---|---|
Age at 4-year survey | < 34 | 545 | 4.5 |
35–39 | 2,262 | 18.5 | |
40–44 | 2,503 | 20.5 | |
45–49 | 2,481 | 20.3 | |
50–54 | 2,187 | 17.9 | |
55–59 | 1,538 | 12.6 | |
60–64 | 585 | 4.8 | |
≥ 65 | 125 | 1.0 | |
Nursing license | registered nurse | 9,735 | 79.6 |
licensed practical nurse | 814 | 6.7 | |
public health nurse | 619 | 5.1 | |
midwife | 1,021 | 8.4 | |
n/a | 37 | 0.3 | |
Educational degree | university or above | 486 | 4.0 |
other | 11,740 | 96.0 | |
Parity | 0 | 3,311 | 27.1 |
1 | 1,535 | 12.6 | |
2 | 4,333 | 35.4 | |
≥ 3 | 2,742 | 22.4 | |
n/a | 305 | 2.5 | |
Marital status | single | 2,382 | 19.5 |
married | 8,728 | 71.4 | |
divorced / widowed | 991 | 8.1 | |
n/a | 125 | 1.0 | |
Menopausal status | premenopausal | 7,838 | 64.1 |
uncertain | 556 | 4.6 | |
postmenopausal | 3,830 | 31.3 | |
n/a | 2 | 0.0 | |
Body Mass Index | < 18.5 | 956 | 7.8 |
18.5– < 25.0 | 9,325 | 76.3 | |
25.0– < 30.0 | 1,567 | 12.8 | |
≥ 30.0 | 281 | 2.3 | |
n/a | 97 | 0.8 | |
Smoking | current smoker | 1,378 | 11.3 |
non-smoker | 10,836 | 88.6 | |
n/a | 12 | 0.1 | |
Alcohol intake | no | 4,426 | 36.2 |
once or twice a week | 4,924 | 40.3 | |
3–6 times a week | 1,576 | 12.9 | |
every day | 1,262 | 10.3 | |
n/a | 38 | 0.3 | |
Sleeping hours | < 5 h | 526 | 4.3 |
5– < 6 | 4,073 | 33.3 | |
6– < 7 | 5,333 | 43.6 | |
7– < 8 | 1,861 | 15.2 | |
≥ 8 | 398 | 3.3 | |
n/a | 35 | 0.3 | |
Night-shift work | no | 5,622 | 46.0 |
yes | 6,604 | 54.0 | |
Current HRT use | no | 11,581 | 94.7 |
yes | 596 | 4.9 | |
n/a | 49 | 0.4 |