Document ID: EPA-HQ-OAR-2006-0735-5126
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2008-04-11T04:00Z

"Richard Hornung" <Richard.Hornung@cchmc.org> 

02/11/2008 10:00 AM

	

To

DIETRIKN@UCMAIL.UC.EDU, Jee-Young Kim/RTP/USEPA/US@EPA

cc

Karen Martin/RTP/USEPA/US@EPA, Deirdre Murphy/RTP/USEPA/US@EPA, Zachary
Pekar/RTP/USEPA/US@EPA, Mary Ross/RTP/USEPA/US@EPA, David
Svendsgaard/RTP/USEPA/US@EPA

Subject

Re: Request for additional information on Lanphear et al. (2005)

Young

 

I am including the statistics that you requested for concurrent blood
Pb. They are as follows:

 

                N        mean      5%        50%         95%

<7.5       103       3.24     1.30      3.00         6.00

>=7.5    1230   12.92      3.50    10.05       34.00

 

<10         244     4.30      1.40      4.15        8.00

>=10     1089   13.93     4.30     11.03      35.40

 

Let me know if this satisfies your needs.

 

Rick 

 

Professor of Environmental Health

Director, Biostatistics & Data Management Core

Div. of Gen. & Community Pediatrics

CCHMC

3333 Burnet Ave

Mail Location 7035

Cincinnati OH 45229-3039

513-636-1948

Fax: 513-636-4402

>>> <Kim.Jee-Young@epamail.epa.gov> 2/7/2008 4:49:49 PM >>>

Dear Drs. Dietrich and Hornung,

As a follow-up to my conversation with Dr. Dietrich, here is the e-mail

specifying the additional information we would like to request from

Lanphear et al. (2005).  The paper states that the concurrent median

blood lead concentration for the study population was 9.7 ug/dL

(5th-95th:  2.5-33.2).  Would you please provide us with the concurrent

median (5th-95th percentile range) blood lead concentrations for the

subsets <10 ug/dL and <7.5 ug/dL as well?

As you are aware, the Pb NAAQS review is on a very tight court-ordered

deadline.  We would greatly appreciate your prompt response.

Many thanks,

Young

Jee Young Kim, Sc.D.

U.S. Environmental Protection Agency

National Center for Environmental Assessment

Telephone:  919-541-4157

E-mail:  kim.jee-young@epa.gov