Table 1. Description of the Study Population: the Health and Retirement Study 2006 and 2008.
| Characteristic | %a | |||
|---|---|---|---|---|
| NSI (n = 8636) | VI alone (n = 1609) | HI alone (n = 1786) | DSI (n = 1061) | |
| Weighted proportion | 67.3 | 11.7 | 13.1 | 7.9 |
| Age, mean (SD), y | 65.2 (9.3) | 67.6 (10.8) | 69.5 (10.6) | 70.6 (11.8) |
| Female | 57.2 | 62.3 | 36.6 | 45.7 |
| Non-White race | 12.1 | 23.7 | 8.7 | 18.9 |
| Hispanic ethnicity | 5.4 | 13.6 | 7.7 | 14.6 |
| Born outside United States | 7.1 | 12.1 | 6.7 | 13.4 |
| Married or partnered | 69.1 | 57.3 | 68.7 | 57.6 |
| Education | ||||
| High school or less | 65.6 | 80.6 | 74.9 | 87.6 |
| College | 22.2 | 13.6 | 15.8 | 8.9 |
| Graduate | 12.1 | 5.9 | 9.3 | 3.5 |
| Net household wealth, median (IQR)b | 279 (90-660) | 106 (15-365) | 223 (64-601) | 76 (7-264) |
| BMI, mean (SD) | 29.4 (6.2) | 29.6 (6.9) | 29.4 (6.0) | 29.8 (6.8) |
| Chronic disease index, mean (SD)c | 1.68 (1.25) | 2.26 (1.41) | 2.07 (1.32) | 2.56 (1.44) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); DSI, dual sensory impairment; HI, hearing impairment; IQR, interquartile range; NSI, neither sensory impairment; VI, vision impairment.
a
Percentage unless indicated otherwise. All figures are weighted for sampling probabilities and differential nonresponse.
b
Thousand of US dollars.
c
Number of chronic conditions among hypertension, diabetes mellitus, cancer other than skin, lung disease, heart disease, stroke, and arthritis. Range, 0 to 7.