Risk of Alzheimer's disease (AD) in parents of children with Down's syndrome
| Risk factor | Relative risk of AD (95% CI) |
|---|---|
| *Not statistically significant | |
| Mothers giving birth at ≤35 years | 4.8 (2.1 to 11.2) |
| Mothers giving birth at >35 years | 1.8 (0.6 to 5.1)* |
| Fathers having a child at ≤35 years | 1.0 (0.3 to 3.2)* |
| Fathers having a child at >35 years | 1.2 (0.4 to 3.4)* |









