Nurses Health Study I
The Nurses Health Study (NHS) questionnaire had the following questions
involving chicken skin.
When you eat chicken, how often is it cooked with the skin on?
- always
- most of the time
- sometimes
- never
How often do you eat the skin?
- always
- most of the time
- sometimes
- never
The same calculations were applied to NHS as the Health Professionals
Follow-up Study (HPFS). In order to account for the four answers, the following percentages were applied:
- Always (100%)
- Most of the time (75%)
- Sometimes (50%)
- Never (0%)
The following table illustrates the number of different combinations
possible.
| Percentage used in calculation |
Cook with skin |
Eat skin |
| 100% cook w/skin and eat w/skin |
Always |
Always |
75% cook w/skin and eat w/skin
25% cook w/skin and eat w/o skin |
| Always |
Most |
50% cook w/skin and eat w/skin
50% cook w/skin and eat w/o skin |
| Always |
Sometimes |
| 100% cook w/skin and eat w/o
skin |
| Always |
Never |
|
25% cooked w/o skin
75% cooked w/skin and eat w/skin
|
| Most |
Always |
25% cooked w/o skin,
56% cooked w/ skin and eat w/skin
19% cooked with skin and eat w/o skin |
| Most |
Most |
25% cooked w/o skin
37.5% cooked w/skin and eat w/skin
37.5% cooked with skin and eat w/o skin |
| Most |
Sometimes |
25% cooked w/o skin
75% cooked w/skin and eat w/o skin |
Most |
Never |
50% cooked w/o skin
50% cooked w/skin and eat w/skin |
Sometimes |
Always |
50% cooked w/o skin
37.5% cooked w/skin and eat w/skin
12.5% cooked with skin and eat w/o skin |
Sometimes |
Most |
50% cooked w/o skin
25% cooked w/skin and eat w/skin
25% cooked with skin and eat w/o skin |
Sometimes |
Sometimes |
50% cooked w/o skin
50% cooked with skin and eat w/o skin |
Sometimes |
Never |
| 100% cooked w/o skin |
Never |
Never |
A complete listing
of the values (pdf) is available.
For more information:
Kana Wu, MD, PhD
Harvard School of Public Health
Department of Nutrition
665 Huntington Avenue
Boston, MA 02115
Tel. 617-432-1842
Fax. 617-432-2435
e-mail:kana.wu@channing.harvard.edu
|
