I'm trying to develop some new approaches to aid in encouraging the US Congress to pass the Udall Bill. For this I need some statistics and maybe even some help if any of you are good with statistics. I would like to develope the total number of people who have Parkinsons right now, not just the 1 to 1.5 million estimated US citizens diagnosised but also the ones who have it but because their neurons have not dropped below the ~20% number they are not exhibiting symptoms. Obvious assumptioms would need to include: 1) Average time period in years which someone has PD b4 symptoms appear 2) The population of the US both total and per age group 3) The probabality of a individual getting PD. For example,if US population = 250million and population over 55 = 80 million and 1 million people have PD, is the probability 1 in 250 or 1 in 80 ? Also I would like to determine what the probability of someone in your immediate family getting PD in their lifetime is. That would include husband and wife, both their parents and all their siblings and all their children. Some stats you would need would be 1) Life expentancy per generation 2) Average family size per generation I realize many of these assumptioms will be only good (or maybe not so good ) quesses. I'd like to present the possibility of getting PD to our legislators as a more real number which they can idenitify with rather than the less than 1half of a percent figure that is tossed about