Table 3.
Relation of early life instruction to subtypes of incident MCI
| Amnestic MCI (n=219) | Nonamnestic MCI (n=177) | |||
|---|---|---|---|---|
| Instruction Years by Age 18 | HR | 95% CI | HR | 95% CI |
| Foreign language | ||||
| None (reference group) | ||||
| 1–4 years | 0.888 | 0.626, 1.261 | 0.683 | 0.474, 0.986 |
| >4 years | 0.841 | 0.527, 1.341 | 0.491 | 0.281, 0.857 |
| Music | ||||
| None (reference group) | ||||
| 1–4 years | 0.893 | 0.643, 1.240 | 0.705 | 0.490, 1.014 |
| >4 years | 0.760 | 0.519, 1.114 | 0.617 | 0.406, 0.937 |
Note. From a cause-specific relative hazard model adjusted for age, sex, and education. MCI, mild cognitive impairment; HR, hazard ratio; CI, confidence interval.