Table 3. Adjusted Incidence Estimates of All-Cause Dementia and Alzheimer Disease by Sex and Subtype of Social Support.
| Stratification | All-cause dementia | Alzheimer disease | ||
|---|---|---|---|---|
| Incidence (95% CI)a | P valueb | Incidence (95% CI)a | P valueb | |
| All participants | ||||
| By emotional support | ||||
| Not low | 9.0 (7.8-10.3) | <.001 | 6.1 (5.1-7.1) | <.001 |
| Low | 15.1 (11.9-18.3) | 10.8 (8.0-13.5) | ||
| By tangible support | ||||
| Not low | 10.2 (8.8-11.5) | .08 | 6.6 (5.5-7.6) | .002 |
| Low | 7.8 (5.7-9.9) | 8.5 (6.4-10.8) | ||
| Men | ||||
| By emotional support | ||||
| Not low | 6.8 (5.1-8.4) | .04 | 3.9 (2.6-5.1) | .13 |
| Low | 10.7 (6.6-14.9) | 6.0 (2.9-9.1) | ||
| By tangible support | ||||
| Not low | 7.4 (5.7-9.0) | .50 | 4.1 (2.9-5.4) | .59 |
| Low | 8.9 (4.3-13.4) | 5.1 (1.6-8.6) | ||
| Women | ||||
| By emotional support | ||||
| Not low | 10.7 (9.0-12.5) | <.001 | 7.8 (6.3-9.3) | <.001 |
| Low | 18.4 (13.6-23.2) | 14.4 (10.2-18.6) | ||
| By tangible support | ||||
| Not low | 12.3 (10.2-14.3) | .26 | 8.4 (6.7-10.0) | .01 |
| Low | 7.0 (4.7-9.3) | 11.1 (8.2-14.0) | ||
a
Adjusted by the direct standardization method based on the 2010 National Census data; presented as the number of incidence cases per 1000 person-years.
b
Calculated by χ2 test.