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Katy Anderson (KatyAnderson) - BPL Forum Member

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CitySan Francisco
StateCalifornia
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All Forum Posts by Katy Anderson

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numbers
Bill said: FWIW, you can push the numbers a bit farther, if you wish, to get a rough estimate that untreated water-drinkers were about 5 x more likely to contract diagnosed giardia than non-drinke...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 18, 9:59am

Colorado study full report
Bruce said: Too bad there isn't free public access to the full report. Katy says: Agreed, without the full report of the Colorado study it is hard to draw any conclusions from these number...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 17, 11:50am

math and science
Sorry to drill down on this, but if we are to discuss science we have to look carefully at the numbers in these studies and try to understand what they mean. Katy said: (the quote is from the 19...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 17, 9:36am

more fun with numbers
Looking further at the abstract for the 1977 study in Colorado, I see some interesting numbers. "A one-year retrospective laboratory survey in Colorado revealed that 691 (3%) of 22,743 stoo...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 16, 9:30pm

Re: Control groups
The way I read it is that the control group are uninfected by giardia.

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 16, 6:42pm

math
I have a different reading of the math. Bruce said: "Retrospective surveys seem wisest to me, like the Colorado study where they surveyed 256 giardiasis cases and determined that the infec...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 16, 5:49pm

ratsack
Bought mine several years ago in preparation for a Grand Canyon trip. It's the smallest size. Remember at the time that I was kind of annoyed because it was considerably heavier than specified....

In GEAR » Ratsack for Grand Canyon use
September 15, 6:06pm

Fast
You guys are FAST! Thanks for sharing the beautiful photos and trip report. Inspiring.

In Post-Trip Reports » Sierra High Route – The Trip of a Lifetime
September 14, 7:23pm

Thanks
Bruce, I really appreciate your efforts to shine some light and science on the giardia question. What others have said, that this is a question of risk assessment, strikes me as very true. As you s...

In General Lightweight Backpacking Discussion » Giardia: Let's Talk SCIENCE
September 13, 4:51pm

Opsacks + bearcans
If you are hiking someplace where bear cans are required, such as most of the Sierra Nevada, then the bears are used to seeing and interacting with hikers and campers. These bears know that campe...

In GEAR » Opsack + bear canister to avoid bear run ins and to increase safety.
September 09, 8:09pm

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