Table 1.
Participant characteristics at baseline
| Total | Married/Partnered Subset | |||
|---|---|---|---|---|
| Dementia (N=596) | No Dementia (N=8,750) | Dementia (N=273) | No Dementia (N=4,823) | |
| Mean follow-up time, years (SD) | 4.0 (2.7) | 6.9 (2.3) | 4.1 (2.7) | 7.0 (2.1) |
| Mean age (SD) | 84 (6.6) | 75 (5.7) | 81 (7) | 74 (6) |
| Age category, n (%) | ||||
| 65–74 | 75 (13) | 4435 (52) | 39 (17) | 2723 (59) |
| 75–84 | 210 (33) | 3337 (36) | 142 (49) | 1793 (34) |
| 85+ | 311 (54) | 978 (12) | 92 (35) | 307 (7) |
| Female, n(%) | 381 (67) | 5026 (57) | 113 (39) | 2177 (44) |
| Race and Ethnicity, n (%) | ||||
| Non-Hispanic White | 371 (69) | 6785 (84) | 205 (77) | 3972 (88) |
| Non-Hispanic Black | 129 (14) | 1103 (8) | 29 (7) | 416 (5) |
| Hispanic/Non-Hispanic Other | 94 (17) | 861 (8) | 39 (16) | 434 (7) |
| Less than high school education, n(%) | 275 (44) | 2308 (23) | 98 (35) | 961 (17) |
| Median household wealth, US $ (IQR) | 74,096 (1,905– 278,505) | 225,869 (65,960– 569,840) | 176,700 (132,000– 772,118) | 325,563 (58,000–579,000) |
| Current marital status, n (%) | ||||
| Married | 226 (35) | 5246 (58) | 273 (100) | 4,823 (100) |
| Divorced/separated/never married | 70 (15) | 1102 (15) | N/A | N/A |
| Widowed | 200 (51) | 2400 (27) | N/A | N/A |
| Living situation, n (%) | ||||
| Lives alone (or with spouse only in married/partnered subset) | 166 (34) | 2509 (32) | 196 (74) | 3940 (84) |
| Medicare Part C enrollee, n (%) | 180 (29) | 2784 (31) | 85 (32) | 1487 (31) |
| Medicaid dual eligible, n (%) | 174 (28) | 990 (10) | 64 (14) | 246 (4) |
| Number of comorbidities, mean (SD) | 1.9 (1.2) | 1.7 (1.1) | 2.1 (1.2) | 1.6 (1.1) |
| Impairments in activities of daily living, n (%) | ||||
| 0–1 | 314 (54) | 7890 (91) | 128 (59) | 4463 (94) |
| 2+ | 276 (46) | 854 (9) | 145 (41) | 360 (6) |
| Smoking status, n (%) | ||||
| Never smoker | 306 (56) | 3685 (42) | 120 (50) | 1997 (42) |
| Past or current smoker | 282 (44) | 4957 (57) | 148 (50) | 2782 (58) |
Notes. Data Source: Health and Retirement Study, 2010–2018. Estimates are weighted to adjust for complex survey design. SD=standard deviation.