TABLE 1.
Distribution of characteristics among C2C participants aged ≥50 years by race/ethnicity
| Overall sample | NH white | Hispanic (any race) | NH Asian | NH black | |
|---|---|---|---|---|---|
| Total N | 2,749 | 2,393 (87.1%) | 191 (7.0%) | 129 (4.7%) | 36 (1.3%) |
| Age, mean (SD) | 66.1 (9.2) | 66.7 (9.3) | 61.1 (7.7) | 64.4 (8.5) | 62.8 (9.9) |
| Female sex, n (%) | 1,694 (61.6%) | 1,480 (61.9%) | 117 (61.3%) | 74 (57.4%) | 23 (63.9%) |
| Educational attainment, n (%) | |||||
| Less than high school (<12 years) | 27 (1.0%) | 18 (0.8%) | 8 (4.3%) | 1 (0.8%) | 0 |
| High school (12 years) | 181 (6.7%) | 143 (6.0%) | 30 (16.0%) | 5 (4.0%) | 3 (8.3%) |
| Some college (13‐15 years) | 525 (19.3%) | 445 (18.8%) | 51 (27.3%) | 16 (12.7%) | 13 (36.1%) |
| College or higher (≥16 years) | 1,983 (73.0%) | 1,761 (74.4%) | 98 (52.4%) | 104 (82.5%) | 20 (55.6%) |
| Sources of enrollment | |||||
| Email outreach | 1410 (51.8%) | 1254 (53.0%) | 86 (45.0%) | 50 (39.4%) | 20 (55.6%) |
| Community talks | 281 (10.3%) | 241 (10.2%) | 17 (8.9%) | 21 (16.5%) | 2 (5.6%) |
| Postcard mailings | 231 (8.5%) | 192 (8.1%) | 22 (11.5%) | 14 (11.0%) | 3 (8.3%) |
| Other a | 798 (29.3%) | 679 (28.7%) | 66 (34.6%) | 42 (33.1%) | 11 (30.6%) |
| No. of current co‐morbidities a | |||||
| None | 942 (34.3%) | 798 (33.4%) | 90 (47.1%) | 43 (33.3%) | 11 (30.6%) |
| 1 | 895 (32.6%) | 794 (33.2%) | 41 (21.5%) | 50 (38.8%) | 10 (27.8%) |
| ≥2 | 912 (33.2%) | 801 (33.5%) | 60 (31.4%) | 36 (27.9%) | 15 (41.7%) |
| Neurological disorder diagnosis (yes), n (%) | 440 (16.2%) | 401 (16.9%) | 24 (12.8%) | 12 (9.5%) | 3 (8.6%) |
| No. of concomitant medications, n (%) | |||||
| None | 380 (14.4%) | 309 (13.4%) | 37 (20.4%) | 27 (21.6%) | 7 (21.9%) |
| 1‐2 | 753 (28.4%) | 644 (27.9%) | 58 (32.0%) | 41 (32.8%) | 10 (31.3%) |
| 3‐4 | 686 (25.9%) | 614 (26.6%) | 43 (23.8%) | 24 (19.2%) | 5 (15.6%) |
| ≥5 | 830 (31.3%) | 744 (32.2%) | 43 (23.8%) | 33 (26.4%) | 10 (31.3%) |
| Cognitive Function Inventory scores, mean (SD) | 2.8 (2.7) | 2.7 (2.7) | 3.4 (2.9) | 3.4 (3.2) | 2.9 (2.5) |
| Research attitude questionnaire scores, mean (SD) | 28.7 (4.4) | 28.7 (4.3) | 28.4 (4.9) | 28.6 (4.9) | 27.9 (4.4) |
Abbreviations: C2C, Consent‐to‐Contact; NH, non‐Hispanic; SD, standard deviation
aOther sources include earned media (newspaper [6.7%], television [<1%], radio [<1%]), social media (1.5%), online searches (3.6%), provider referral (4.0%), friend referral (5.2%), and other sources not specified (7.5%).
a
Comorbidities include self‐reported cancer, diabetes, coronary artery disease, congestive heart failure, kidney disease, liver disease, hypertension, hypercholesterolemia, and emphysema.