The discussion regarding mention of the time when first symptoms can be identified has some technical merit, I believe. The date on which we were diagnosed is really just another point on the chart which we use to measure our decline, and depends on such a lot of variable factors, (not least the question of the skill of the particular specialist making the diagnosis). The 'Time from first symptoms' is perhaps in some ways more significant than the diagnosis point, and I would support its inclusion. I suppose that this discussion is of more relevance to those with slow progression. - this raises the interesting possibility that it will tend to separate the long-term from the older onset members, which may be of interest to those studying the statistical distribution of PD. Of course, 20/20 hindsight is not totally reliable, but I like it better out in the open, rather than hidden away. Just to be quite clear that I understand the proposal; I assume it to be : Age Now / Years since diagnosis / years from first symptoms to diagnosis / -- Brian Collins <[log in to unmask]> 58/19/6