Table 2. Results of subgroup.
| Subgroups | Included studies | RR (95% CI) |
Heterogeneity | |
|---|---|---|---|---|
| I2 (%) | p-value | |||
| Dementia type | ||||
| AD | 4 | 0.88 [0.79–0.98] | 52.6 | 0.024 |
| VD | 2 | 0.75 [0.66–0.85] | 0.0 | <0.001 |
| Age | ||||
| ≥65 | 5 | 0.67 [0.51–0.87] | 75.9 | 0.003 |
| >65 | 1 | 0.78 [0.69–0.88] | / | <0.001 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.