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Long-term survival was examined for 218 patients with Alzheimer's disease (AD) and 115 patients with multi-infarct dementia (MID). The 14-year survival rate for AD was 2.4% versus an expected rate of 16.6%, and for MID 1.7% versus 13.3% expected. MID showed a more malignant natural course than AD. Men carried a less favourable survival prognosis than women, both in AD and MID: the relative risk of dying for women was half that for men in both diseases. In MID, advanced disability indicated a relative risk of dying over twice as high. In both diseases the risk of death was substantially higher in the event of occurrence of primitive reflexes.
Mölsä et al. (Thu,) studied this question.