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The Sister Study

Demographic Characteristics

The percentages for each characteristic may not add up to 100 due to rounding. The number of missing or not applicable were excluded from the total (N = 50,884) for calculating of 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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