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The Sister Study

Demographic Characteristics

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. 

Age (in years) of Participant
at Baseline Enrollment
Number of Participants Percentage

35-44

45-54

55-64

65 or older

6,578

17,520

17,912

8,874

13%

34%

35%

17%

 

Self-Reported Race/Ethnicity Number of Participants Percentage

White, non-Hispanic

Black, non-Hispanic

Hispanic

Other

Missing

42,558

4,462

2,515

1,334

15

84%

9%

5%

3%

--

 

Highest Education Level Attained Number of Participants Percentage

High school or less

Some college, no degree

Associate/technical degree

Bachelor's degree

Graduate degree

Missing

7,805

9,957

7,224

13,714

12,172

12

15%

20%

14%

27%

24%

--

 

Income Number of Participants Percentage

Less than $20,000

$20,000 - $49,999

$50,000 - $99,999

$100,000 - $200,000

More than $200,000

Missing

2,296

10,284

19,907

12,868

3,534

1,995

5%

21%

41%

26%

7%

--


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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.

Age (in years) of Participant
at Baseline Enrollment
Number of Participants Percentage

35-44

45-54

55-64

65 or older

624

1,263

880

299

20%

41%

29%

10%

 

Self-Reported Race/Ethnicity Number of Participants Percentage

White, non-Hispanic

Black, non-Hispanic

Hispanic

Other

Missing

1,939

723

293

106

5

63%

24%

10%

4%

--

 

Highest Education Level Attained Number of Participants Percentage

High school or less

Some college, no degree

Associate/technical degree

Bachelor's degree

Graduate degree

Missing

614

751

531

672

490

8

20%

25%

17%

22%

16%

--

 

Income Number of Participants Percentage

Less than $20,000

$20,000 - $49,999

$50,000 - $99,999

$100,000 - $200,000

More than $200,000

Missing

247

775

1,082

625

174

163

9%

27%

37%

22%

6%

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