Are the semantics of the "obesity query" correct?
While Ok to test an i2b2 instance's operation, the query
" Find everyone with a BMI percentile > 5"
would actually identify *everybody* other than the severely underweight - not 
the obese patients who we are expected  contact.  (If we are looking for 
underweight individuals, we would have to change the criterion to < 5, not >5).

The URL http://www.eufic.org/page/en/page/FAQ/faqid/bmi-percentages/  cites the 
definitions of the International Obesity Task Force, which I've copied and 
pasted below:

Underweight                  BMI-for-age < 5th percentile.
Normal weight               BMI-for-age between 5th percentile and 90 
percentile.
At risk of overweight  BMI-for-age between 90th percentile and 97th percentile
Overweight                    BMI-for-age > 97th percentile.

The exclusion conditions - diseases causing malnourishment (e.g., cancer), 
amphetamines, bronchodilators - listed in the query spec would similarly 
exclude known causes of low weight.
Thanks,
Prakash

From: [email protected] 
[mailto:[email protected]] On Behalf Of Dan Connolly
Sent: Wednesday, April 01, 2015 3:09 PM
To: Tamara McMahon
Cc: , ; Alex F. Bokov, Ph.D.
Subject: FW: Obesity query v0.2

Tamara,

This is an updated obesity query; it's a "try it and see what breaks" sort of 
thing, for now (steps 1 and 2 of the PDF). Please give it a whirl at KUMC.

I suppose most of the other honest brokers are on gpc-dev, but just in case, 
I'm copying them too.

--
Dan
________________________________
From: 
[email protected]<mailto:[email protected]> 
[[email protected]] on behalf of Alex Bokov [[email protected]]
Sent: Tuesday, March 31, 2015 3:58 AM
To: [email protected]<mailto:[email protected]>
Subject: Obesity query v0.2
Hello, colleagues. Here is the updated obesity query. The main document is the 
PDF. I'm including the HTML generated by "Print Query" in case it's helpful, 
but I recommend reading the PDF.

In principle, every site should be able to run steps I and II of this document 
and report back their counts. Please let us know what roadblocks you run into 
if you find this is not the case. Steps III and IV of this document are still 
alpha.

The counts for UTHSCSA are:
30,500 adults meeting selection criteria
5,222 children and young adults meeting selection criteria (estimating this to 
be about 4,400 unique households)

Thanks.

--Alex


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