| 1st author, year | Sex | Age, mean age, response-rate | Chronic conditions, illness | Ethnicity |
| 1. Anthony (2007) USA | 82 % female 18% male | Age 60 - 99 Median 79. Response rate (not reported). | Not reported. | African American 100.0% |
| 2. Alma et al. (2012) NETHERLANDS | 67% female 41% male | Age 57 - 88. Median 73.2 Median 70.89 90 % response rate. | Diabetes mellitus 23%. Osteoarthritis, 27%. Diseases of the respiratory system 8%.Other chronic conditions 65%. | Not reported |
| 3. Dewing et al. (2006) UK | Not reported | Age (not reported) Median (not reported) 64% response rate, 80% response rate. | Chronic illness, rehabilitation needs. | Not reported |
| 4. Heisler et al. (2002) USA | 2% female 98% male
| Age 65 and older. Median 67. 66% response rate. | Diabetes mellitus | Caucasian 81% African American 12%, Latino 4% Other 3% |
| 5. Maly et al. (2004) USA | 100% female | Age 55 years and older. Median 66.7. 63.9% response rate (private practices), 66.1% response rate (CSP), 64.3% response rate (BCTF) | Breast cancer | Caucasian 63.5% African American 2.2% Latino 23.4% Other 0.9% |
| 6. Pipe et al. (2005) USA | 59% female 41% male | Age 50 and older. Median 73.3 48.7% response rate. | General health Excellent, very good, good 84.6% Fair, poor 15.4% | Caucasian 93.0%, African American 1.0% Asian 0.5%, Native American 2.0%, Other 3.0% |
| 7. Tariman et al. (2014) USA | 60% female 40% male | Age 60 years and older. Median 67.45. 18% response rate. | Symptomatic Myeloma | Caucasian 90% Asian 5% Native American 5% |
| 8. Thomson et al. (2007) UK | 44.6% of females in the intervention group.43.4% of females in the control group. 55.4% of males in the intervention group.56.6% of males in the control group. | Age 60 years and older. Median 73.7 in the intervention group, Median 73.1% in the control group. 26% response rate in the intervention group, 29% response rate in the control group. | Chronic non-valvular atrial fibrillation or paroxysmal atrial fibrillation. | Not reported. |
| 9. Wetzels et al. (2005) USA | 62.6% of females in the intervention group, 36.8% of males in the intervention group, 52.8% of females in the control group, 47.2% of males in the control group. | Age 70 and older. Median 75.6. 38.1% response rate in the intervention group, 43.0% response rate in the control group. | Serious chronic diseases intervention group, 48.8%, control group, 46.5%. | Not reported |