Best of luck on finishing the modified version of your book "Starting and Sustaining Groups that Thrive." You asked about some of the figures included in the Community Tool Box about the number of self-help groups and support groups around the country. That number cited was 500,000 and you asked about the source and date of that statistic. We are doing some searching to see if we can find out if there is updated information. We do know that the number cited is not recent but don't at this time have additional information about source or any updated information.