2002
DOI: 10.1212/wnl.59.2.280
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Amyotrophic lateral sclerosis in Olmsted County, Minnesota, 1925 to 1998

Abstract: The authors sought to determine trends in the incidence of ALS in Olmsted County from 1925 to 1998. Seventy-seven cases of ALS were identified during the period studied. The incidence rate remained stable at 1.7 cases per 100,000 people per year. Mean age at onset was 63 years. Mean survival was 23 months from diagnosis. Mean survival for patients <60 years old was 31 months; for patients aged >or=60 years, it was 20 months (p = 0.02). Mean time from symptom onset to diagnosis was 13 months. Neither survival n… Show more

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Cited by 187 publications
(149 citation statements)
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“…We decided to take point 0 as time of diagnosis even this could mislead the comparison to other studies, setting our patients appearing to have worse status in less time. Nevertheless, there is no study with better outcome compared to our data at 1, 5 or 10 years of follow-up (Table 1) [14,15,22,73,80].…”
Section: Compared To Population-based Studiescontrasting
confidence: 72%
“…We decided to take point 0 as time of diagnosis even this could mislead the comparison to other studies, setting our patients appearing to have worse status in less time. Nevertheless, there is no study with better outcome compared to our data at 1, 5 or 10 years of follow-up (Table 1) [14,15,22,73,80].…”
Section: Compared To Population-based Studiescontrasting
confidence: 72%
“…Also, although Rochester incidence rates appeared to increase after 65 years of age, they were not statistically different from the 55-to 64-year age stratum. Interestingly, a follow-up paper for this series by Sorenson et al 10 for cases diagnosed through 1998 found ALS incidence between 1990 and 1999 peaking at a perhaps slightly younger, 60-69 year age strata, with a mean age at symptom onset of 63 years.…”
Section: Als Disease Coursementioning
confidence: 74%
“…1° Some of the symptoms that can be treated palliatively include fatigue, dysphagia (i.e., difficulty swallowing), muscle spasticity, emotional lability, 3,4 sleeping problems, pain, depression, and sialorrhea (i.e., drooling). Death is usually the result of respiratory failure, 3 ' 4 and patient survival averages 1.5 to 2 years following diagnosis 0 -1 2 and 2.5 to 3 years 4 [10][11][12][13][14] following the appearance of the initial symptom.…”
Section: Clinical Features Of Alsmentioning
confidence: 99%
“…The incidence of ALS is approximately one to two cases per 100,000 per year, with onset typically at around the age of sixty years, with survival of three to five years (Rowland, Shneider, 2001;Sorenson et al, 2002) ALS can occur in sporadic or familial form, which corresponds to only ten percent of cases. The possible involvement of free radicals in the etiology of ALS is suggested by the discovery that mutations in the gene encoding the antioxidant enzyme superoxide dismutase Cu / Zn (SOD1) are associated with familial ALS (Rosen et al, 1993).…”
Section: Amyotrophic Lateral Sclerosismentioning
confidence: 99%