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. Author manuscript; available in PMC: 2013 Jun 15.
Published in final edited form as: Cancer Res. 2012 Apr 17;72(12):3020–3028. doi: 10.1158/0008-5472.CAN-11-2619

Table 1.

Selected characteristics according to postmenopausal hormone use in the Nurses’ Health Study, 1994.

Postmenopausal Hormone Use
None Past Current
N participants 20856 14196 29440
Mean age, yr 61.3 63.7 59.9
Body mass index, kg/m2 27.1 26.6 25.8
physical activity, METS/week* 20.0 19.4 20.9
Family history of colorectal in first degree relatives, % 2.8 3.7 4.2
History of colorectal polyps, % 2.4 3.8 3.2
Sigmoidoscopy or colonoscopy, % 12.0 18.4 18.5
Current smoking, % 15.9 12.4 10.7
Age at menopause, yr 50.4 48.6 48.8
Hysterectomy, % 15.4 44.8 53.4
Aspirin use (≥1 tab/week), % 45.3 48.3 46.9
Multivitamin use, % 33.8 37.7 41.9
Alcohol intake, g/day 4.8 5.0 5.2
Fiber intake, mg/day 18.9 19.6 19.6
Vitamin D intake, IU/day 382.3 405.3 418.6
*

METS are metabolic equivalents which were calculated based on the frequency of a range of physical activities.

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