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Updated: Aug 5, 2026

08:28
Experimental Metastasis Assay
Published on: August 24, 2010
Summary
Amyotrophic Lateral Sclerosis (ALS) incidence in Rochester, MN, remained stable from 1925-1977. Survivorship averaged 22.5 months, with younger patients living longer.
Area of Science:
- Neurology
- Epidemiology
Background:
- Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease.
- Understanding ALS epidemiology is crucial for public health and research.
Purpose of the Study:
- To determine the incidence, trends, and survivorship of ALS in Rochester, Minnesota.
- To provide a comprehensive community-based epidemiological profile of ALS.
Main Methods:
- Population-based study analyzing ALS cases in Rochester, MN, from 1925 to 1977.
- Calculation of incidence rates, age-specific incidence, male:female ratios, and median survivorship.
Main Results:
- Average annual ALS incidence was 1.76 per 100,000 population.
- Median age at onset was 66 years, with incidence increasing with age.
- Median survivorship was 22.5 months, longer for younger-onset patients.
Conclusions:
- ALS incidence showed a nonsignificant increasing trend over 53 years.
- Demographic patterns in this community reflect broader ALS epidemiology.
- Age at onset significantly impacts ALS patient survivorship.

