Re: OT Yo Hunter - The City That Never Sleeps

On Jul 22, 1:07 pm, ratatouille...@xxxxxxxxx wrote:
On Jul 21, 4:29 pm, Bob Giddings <b...@xxxxxxxxxxxx> wrote:

On Sat, 21 Jul 2007 14:41:35 -0700, ratatouille...@xxxxxxxxx
wrote:

Reading the fine print by the graph, somehow the study was limited to
ages 15-64, which potentially lets out a lot of young users...

Pete

I really wonder how they could tell age ranges from pee remains
in waste water??

I think that is a mathematical artifact. An assumption in the
statistics.

http://www.arcatapet.net/bobgiddings

My guess would be the age range was related to the population presumed
to be generating the sewage in general, not the coke users, based on
some population sampling done by the water/sewer utility people.

Pete
Here's a different study, but likely linked to the one quoted. It
occurs to me that NYC may have been highest on the list, but the study
was likely limited to the cities on that list.

http://pubs.acs.org/cgi-bin/abstract.cgi/ancham/2006/78/i24/abs/ac061095b.html

Pete

.