Table 1 Selected participant characteristics in 1998, the midpoint during follow-up, by quintiles of AHEI-2010 score among women in the NHS
From: A prospective cohort study of dietary indices and incidence of epithelial ovarian cancer
| Â | Quintiles of AHEI-2010 score | ||||
|---|---|---|---|---|---|
|  | ≤42 (N = 11255) | >42-48 (N = 12518) | >48-53 (N = 13169) | >53-59 (N = 13417) | >59 (N = 13273) |
Mean (SD) | Â | Â | Â | Â | Â |
Age, years* | 62.4 (7.1) | 63.4 (7.1) | 64.1 (7.1) | 64.8 (7.1) | 65.6 (7.0) |
Age at menarche, years* | 12.6 (1.4) | 12.6 (1.4) | 12.5 (1.4) | 12.5 (1.4) | 12.5 (1.4) |
BMI, kg/m2 | 27.0 (5.5) | 26.8 (5.2) | 26.7 (5.2) | 26.5 (5.0) | 26.0 (4.9) |
Years of OC usea | 4.4 (3.8) | 4.3 (3.8) | 4.2 (3.9) | 4.1 (3.9) | 4.1 (4.0) |
Parityb | 3.3 (1.6) | 3.3 (1.6) | 3.2 (1.5) | 3.2 (1.5) | 3.1 (1.4) |
Physical activity, MET-hr/wk | 12.5 (17.4) | 14.9 (18.3) | 17.2 (21.6) | 18.9 (21.6) | 23.8 (27.0) |
Lactose intake, mg/day | 12.7 (9.6) | 13.2 (9.1) | 13.6 (9.2) | 14 (9.3) | 13.9 (9.0) |
Caffeine intake, mg/day | 287.9 (201.6) | 291.6 (202.0) | 285.5 (199.4) | 278.9 (198.8) | 259.7 (198.3) |
Calories per day | 1859 (451) | 1777 (460) | 1739 (465) | 1705 (468) | 1684 (461) |
Pack-years of smokingc | 31.8 (24.5) | 27.6 (22.6) | 25.3 (21.3) | 22.7 (20.0) | 20.5 (18.4) |
E only HT use, yearsd | 6.0 (5.6) | 6.0 (5.7) | 6.4 (6.0) | 6.4 (5.8) | 6.6 (5.9) |
E + P HT use, yearse | 5.0 (3.2) | 5.0 (3.3) | 5.2 (3.3) | 5.2 (3.4) | 5.3 (3.5) |
Other HT use, yearsf | 3.0 (2.9) | 2.9 (2.8) | 3.0 (2.7) | 3.0 (2.6) | 3.1 (2.7) |
Percent | Â | Â | Â | Â | Â |
Ever OC use | 49 | 49 | 51 | 51 | 52 |
Smoking status | Â | Â | Â | Â | Â |
Never | 47 | 45 | 44 | 42 | 40 |
Past | 36 | 41 | 43 | 47 | 53 |
Current | 17 | 14 | 12 | 10 | 7 |
Parous | 95 | 95 | 95 | 94 | 93 |
Family history of ovarian cancer | 3 | 3 | 3 | 3 | 3 |
Tubal ligation | 21 | 21 | 21 | 21 | 21 |
Hysterectomy | Â | Â | Â | Â | Â |
No | 73 | 75 | 74 | 75 | 74 |
Yes | 22 | 21 | 23 | 22 | 22 |
Unknown | 5 | 4 | 3 | 3 | 3 |
Unilateral oophorectomy | Â | Â | Â | Â | Â |
No | 85 | 87 | 86 | 87 | 87 |
Yes | 9 | 8 | 9 | 9 | 8 |
Unknown | 6 | 5 | 4 | 4 | 4 |
Postmenopausal | 92 | 92 | 93 | 93 | 92 |
Ever E only HT use | 22 | 23 | 25 | 25 | 27 |
Ever E + P HT use | 26 | 29 | 32 | 33 | 36 |
Ever other HT use | 18 | 20 | 21 | 22 | 25 |