Lifestyle & family history
The percentages for each characteristic may not add up to 100 due to rounding. Those missing data or for whom a category was not applicable were excluded from the total (N = 50,884) for calculating percentages.
Lifestyle Characteristics
|
Body Mass Index (BMI) of Participant |
Number of Participants | Percentage |
|---|---|---|
|
Underweight (less than 18.5) Normal weight (18.5-24.9) Overweight (25.0-29.9) Obese (30.0 or more) Missing |
563 18,875 16,151 15,278 17 |
1% 37% 32% 30% -- |
| Smoking Status of Participant | Number of Participants | Percentage |
|---|---|---|
|
Never smoked Yes: past smoker Yes: current smoker Missing |
28,552 18,141 4,175 16 |
56% 36% 8% -- |
| Alcohol Intake of Participant | Number of Participants | Percentage |
|---|---|---|
|
Never consumed alcohol Yes: Former drinker Current drinker: less than 1 drink per day Current drinker: 1 drink per day Current drinker: 1.1 to 1.9 drinks per day Current drinker: 2 or more drinks per day Missing |
1,949 7,730 34,256 1,237 3,160 2,465 87 |
4% 15% 67% 2% 6% 5% -- |
Family History of Breast Cancer
| Participant Reports Mother Diagnosed with Breast Cancer | Number of Participants | Percentage |
|---|---|---|
|
Yes No Missing |
9,135 39,834 1,915 |
19% 81% -- |
| Participant Reports a Sister Diagnosed with Breast Cancer | Number of Participants | Percentage |
|---|---|---|
|
1 sister with breast cancer 2 or more sisters with breast cancer Missing |
45,706 5,177 1 |
90% 10% -- |
Passive Cohort
The percentages for each characteristic may not add up to 100 due to rounding. Those missing data or for whom a category was not applicable were excluded from the total (N = 3,066) for calculating percentages. Data approximates final passive follow-up data.
Lifestyle Characteristics
| Smoking Status of Participant | Number of Participants | Percentage |
|---|---|---|
|
Never smoked Yes: former smoker Yes: current regular smoker Missing |
1,595 968 499 4 |
52% 32% 16% -- |
| Alcohol Intake of Participant | Number of Participants | Percentage |
|---|---|---|
|
Never consumed alcohol Yes: Former drinker Current drinker Missing |
153 593 2,304 16 |
5% 19% 76% -- |
Family History of Breast Cancer
| Participant Reports a Sister Diagnosed with Breast Cancer | Number of Participants | Percentage |
|---|---|---|
|
1 sister with breast cancer 2 or more sisters with breast cancer Missing |
2,739 325 2 |
89% 11% -- |
|