|
Characteristic
|
Willing to participatea, number (percentage)
|
OR (95% CI)
|
P value
|
|---|
|
Sex
|
|
Male
|
651 (76)
|
1.00
|
0.17
|
|
Female
|
601 (81)
|
1.61 (0.81, 3.22)
|
|
Age (years)
|
|
<40
|
128 (67)
|
1.00
|
0.007
|
|
40–49
|
142 (71)
|
1.60 (0.47, 5.42)
|
|
50–59
|
273 (78)
|
2.45 (0.83, 7.23)
|
|
60–69
|
423 (83)
|
5.06 (1.72, 14.86)
|
|
Over 70
|
286 (83)
|
6.48 (1.89, 22.24)
|
|
Race
|
|
Not black
|
475 (77)
|
1.00
|
0.96
|
|
Black
|
777 (79)
|
1.02 (0.50, 2.10)
|
|
Education
|
|
≤ High school
|
600 (78)
|
1.00
|
0.71
|
|
Some college
|
363 (81)
|
1.31 (0.58, 2.96)
|
|
College or Graduate degree
|
289 (75)
|
0.89 (0.37, 2.12)
|
|
Income
|
|
<US$20,000
|
387 (82)
|
1.00
|
0.68
|
|
US$20,000–US$39,999
|
333 (79)
|
0.65 (0.27, 1.58)
|
|
US$40,000)–US$59,999
|
218 (76)
|
0.60 (0.21, 1.72)
|
|
Over US$60,000
|
294 (77)
|
0.61 (0.24, 1.57)
|
|
Years on dialysis
|
|
Less than 1 year
|
222 (79)
|
1.00
|
0.80
|
|
1–3 years
|
370 (78)
|
0.94 (0.33, 2.68)
|
|
3–5 years
|
310 (81)
|
1.00 (0.36, 2.79)
|
|
More than 5 years
|
350 (75)
|
0.66 (0.23, 1.89)
|
|
Hospitalizations in past year
|
|
None
|
397 (80)
|
1.00
|
0.80
|
|
1
|
222 (79)
|
1.03 (0.35, 2.97)
|
|
2
|
243 (76)
|
0.69 (0.26, 1.83)
|
|
3
|
390 (77)
|
0.73 (0.31, 1.72)
|
|
Hypertension
|
|
No
|
188 (92)
|
1.00
|
0.01
|
|
Yes
|
1050 (77)
|
0.17 (0.05, 0.68)
|
|
Heart disease
|
|
No
|
636 (77)
|
1.00
|
0.66
|
|
Yes
|
532 (79)
|
1.17 (0.58, 2.39)
|
|
Diabetes
|
|
No
|
649 (79)
|
1.00
|
0.68
|
|
Yes
|
519 (77)
|
0.86 (0.42, 1.75)
|
|
COPD
|
|
No
|
1034 (79)
|
1.00
|
0.41
|
|
Yes
|
134 (73)
|
0.61 (0.19, 1.94)
|
|
Malignancy
|
|
No
|
1064 (79)
|
1.00
|
0.54
|
|
Yes
|
104 (72)
|
0.66 (0.18, 2.46)
|
|
Research Attitude Questionnaireb (per 1-point change in score)
|
n/a
|
1.09 (1.02, 1.17)
|
0.01
|
|
Revised Healthcare System Distrust Scalec (per 1-point change in score)
|
n/a
|
0.87 (0.83, 0.92)
|
<0.001
|
-
COPD chronic obstructive pulmonary disease
-
aWillingness to participate was defined as the “definitely willing” or “probably willing” categories combined
-
bHigher scores indicate a more favorable view of biomedical research
-
cHigher scores indicate more distrust of the health care system
