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ALS For support and discussion of Amyotrophic lateral sclerosis (ALS), also referred to as "Lou Gehrig's Disease." In memory of BobbyB. |
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In Remembrance
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Hi Bobby,
Thanks for sharing this... it confirms the need for a national registry even more. The ALS Registry Act that we are working so hard on should go a long way towards answering our questions. Best regards, Jerry ******************************** Jerry Dawson President/CEO The ALS Association Jim "Catfish" Hunter Chapter 120-101 Penmarc Drive Raleigh, NC 27603 919.755.9001 (P) 919.755.0910 (F) 877.568.4347 (Toll Free) www.CatfishChapter.org ******************************** PS. In 2004, a friend with ALS in SC asked me where our numbers come from so I did some digging. I compiled the information in an email that I sent to him. This is the body of the email: If we can show that the incidence and prevalence of ALS is higher than the reported data then we can make a much stronger case for increased funding from the NIH and other sources. Accurate epidemiological studies begin with accurate case ascertainment, which in turn depends on correctly diagnosing the disease. Study data are not absolute due to other factors such as the sampling method and the fact that there is no mandatory reporting for ALS (as you pointed out). However, the studies have been rigorous and they all indicate stable incidence and prevalence of ALS both geographically and over a significant number of years. 1. Data sources for incidence, prevalence and mortality rates per 100,000 population: . Western Washington State, 1990-1995, McGuire, Longstreth (Neurology 47, August 1996, pp. 571-573) . Harris County Texas Study, 1955-1988, published report, Appel . Olmstead County Minnesota study, 1925-1984, Kurland 2. Census data is from the US 2000 census: Total population of 281,421,906 3. Consultants to ALSA National Office Staff were: . Leonard Kurland, MD, PhD, Emeritus Professor of Epidemiology, Mayo Clinic . Lorene Nelson, PhD, Neuroepidemiologist, Stanford University . Walter Bradley, MD, FRCP, University of Miami School of Medicine Ongoing and new efforts in ALS Epidemiology 1. Five US studies in Olmstead County; Harris County; NIH funded Northern California study; Department of Defense/VA study of ALS among Gulf War active duty personnel. 2. Kelly AFB 3. ATSDR (Agency for Toxic Substances and Disease Registry) http://www.atsdr.cdc.gov/DHS/MS_Fact_Sheet.html 4. Kaiser study http://www.clinicaltrials.gov/ct/sho...11154?order=22 The prevalence of ALS in the US is said to be 6 to 8 per 100,000 population. Using the higher prevalence number, the total would be nearly 22,800 Americans with ALS at any give time. However, because many in the ALS community believe that the prevalence is somewhat, if not significantly higher, ALSA's Board of Trustees determined that in ALSA's literature, the prevalence should be stated as follows: "As many as 30,000 Americans may have ALS at any given time." The actual number could be much higher considering the typical age of onset and the number of baby boomers entering their 50-60's. Other factors/obstacles include mis-diagnosis and elderly deaths that were never diagnosed. The number that I report for NC & SC is actually in line with the statistically supported prevalence data of 6-8 per 100,000 population. Had I based our numbers on the estimated 30,000 Americans, the number would increase by 300. See figures below: Prevalence ALS cases based on 6-8 per 100,000 US: Population: 284,796,887 ALS cases: 17,088 to 22,784 NC: Population: 8,635,000 ALS cases: 518 to 690 SC: Population: 4,000,000 ALS cases: 240 to 320 Combined NC & SC: Population: 12,635,000 ALS Cases: 758 to 1,010 Numbers Based on (30,000) US Cases US Population: 284,796,887 30,000 per 284,796,887 Coefficient: 0.000105 or 0.0105% NC: 8,635,000(0.000105) = 906 SC: 4,000,000(0.000105) = 420 Total: 1326 As for your suggestion to total all the cases from each Chapter... This is done annually. The numbers are significantly less than the 30,000 due to reporting/collection problems previously mentioned and HIPPA laws. I think it is safe to conclude the following: The incidence and prevalence numbers that we have (while not perfect) are supported by the data that we have. We will not have irrefutable numbers until we mandate ALS as a reportable disease and establish adequate funding, people and systems to analyze and monitor collected data and follow-up with sanctions for unreported cases. -----Original Message----- From: Bobby [mailto:robertb@mitchell.main.nc.us] Sent: Tuesday, June 26, 2007 2:01 PM To: Jerry@CatfishChapter.org; Jeff; Susan Reinhardt Subject: ALS Counts Home http://www.alscounts.com/home.html
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. ALS/MND Registry . |
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