Table 1 Age-standardized characteristics according to total years of multivitamin use at the time of first endoscopy in women
From: Long-term use of multivitamins and risk of colorectal adenoma in women
Years of multivitamin use at the time of endoscopy | ||||||
|---|---|---|---|---|---|---|
None | 1–4 | 5–9 | 10–14 | 15–19 | 20–26 | |
Participants (n) | 6930 | 11 277 | 9789 | 7260 | 3763 | 2384 |
Mean age (years) | 45.9 | 46.3 | 48.2 | 48.3 | 49.1 | 50.9 |
Family history of colorectal cancer (%) | 7.5 | 6.5 | 5.8 | 5.4 | 5.5 | 4.5 |
Reason for endoscopy is screening (%) | 68.5 | 69.2 | 70.0 | 70.0 | 69.3 | 72.0 |
Height (inches) | 64.8 | 64.8 | 65.0 | 65.0 | 65.0 | 63.3 |
Body mass index (kg m−2) | 26.9 | 27.2 | 26.9 | 26.5 | 26.2 | 25.1 |
Physical activity (METs hours per week) | 16.8 | 17.4 | 18.9 | 20.0 | 20.8 | 22.1 |
Smoking (pack-years) | 9.0 | 8.6 | 7.9 | 8.1 | 7.6 | 6.5 |
Aspirin use (%) | ||||||
Never use | 53.8 | 50.0 | 43.3 | 41.8 | 38.5 | 32.9 |
Past use | 24.2 | 26.6 | 28.1 | 29.7 | 32.0 | 33.2 |
Current use (⩾1 per week) | 22.0 | 23.4 | 28.6 | 28.5 | 29.5 | 33.9 |
Calcium (mg per day) | 922 | 1035 | 1156 | 1260 | 1315 | 1359 |
Vitamin D (IUs per day) | 236 | 322 | 411 | 488 | 523 | 546 |
Red meat (servings per day) | 0.94 | 1.05 | 1.14 | 1.15 | 1.27 | 1.43 |
Processed meat (servings per day) | 0.17 | 0.17 | 0.16 | 0.16 | 0.15 | 0.14 |
Alcohol (g per day) | 3.6 | 3.7 | 3.8 | 3.9 | 4.1 | 3.9 |
Dietary folate (mcg per day)a | 306 | 314 | 322 | 329 | 330 | 333 |
UV-B flux (Robertson–Berger meter units) | 124 | 124 | 125 | 126 | 127 | 123 |
