Cod liver oil daily intake ≥1 month in past year | ||||
---|---|---|---|---|
No. of subjects | n | % | Crude OR (95% CI) | |
Total | 17528 | 3076 | 17.5 | |
Age at baseline (years) | ||||
19–29 | 2805 | 345 | 12.3 | 1.00 (reference) |
30–39 | 5424 | 774 | 14.3 | 1.19 (1.04 to 1.36) |
40–49 | 6701 | 1309 | 19.5 | 1.73 (1.52 to 1.97) |
50–55 | 2598 | 648 | 24.9 | 2.37 (2.05 to 2.74) |
Sex | ||||
Women | 9786 | 1937 | 19.8 | 1.00 (reference) |
Men | 7742 | 1139 | 14.7 | 0.70 (0.65 to 0.76) |
Daily smokers | ||||
No | 11855 | 2195 | 18.5 | 1.00 (reference) |
Yes | 4761 | 702 | 14.7 | 0.76 (0.69 to 0.83) |
Unknown | 912 | |||
Physical activity (h/week) | ||||
<1 | 3810 | 549 | 14.4 | 1.00 (reference) |
1–2 | 6420 | 1151 | 17.9 | 1.30 (1.16 to 1.45) |
≥3 | 5569 | 1069 | 19.2 | 1.41 (1.26 to 1.58) |
Unknown | 1729 | |||
Education (years) | ||||
<10 | 3203 | 567 | 17.7 | 1.00 (reference) |
10–12 | 9365 | 1416 | 15.1 | 0.83 (0.74 to 0.92) |
≥13 | 4846 | 1074 | 22.2 | 1.32 (1.18 to 1.48) |
Unknown | 114 | |||
Social benefit | ||||
Non-recipient | 13221 | 2222 | 16.8 | 1.00 (reference) |
Recipient | 3213 | 670 | 20.9 | 1.30 (1.18 to 1.44) |
Unknown | 1094 | |||
Economic difficulties | ||||
No | 11863 | 2203 | 18.6 | 1.00 (reference) |
Yes | 5468 | 838 | 15.3 | 0.79 (0.73 to 0.87) |
Unknown | 197 | |||
Family history of asthma | ||||
No | 13606 | 2365 | 17.4 | 1.00 (reference) |
Yes | 2926 | 535 | 18.3 | 1.06 (0.96 to 1.18) |
Unknown | 996 | |||
Body mass index (kg/m2) | ||||
<25.0 | 8289 | 1503 | 18.1 | 1.00 (reference) |
25.0–29.9 | 7251 | 1271 | 17.5 | 0.96 (0.88 to 1.04) |
≥30.0 | 1955 | 296 | 15.1 | 0.81 (0.70 to 0.92) |
Unknown | 33 |
HUNT, Nord-Trøndelag Health Study.