s.th. that would be beneficial (in improving their situatin) for the future maybe; not sure what kind of study this is, so you have to decide...

Deutsch term (edited): Nutzwerte

Die u.a. Website könnte Dir nützlich sein.

Die Nutzwerte für....stammen aus der **** Studie

The **** study generates/provides informative data for....

[The word 'informative' includes and takes care of the 'Nutz-' part, that is, the idea of usefulness.]

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Note added at 12 hrs (2008-03-23 08:22:56 GMT)
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Alternatively, "useful data" is also an option for your consideration

"The purpose of this study was to determine effective cut-off values of waist circumference (WC) to detect the clustering of cardiovascular risk factors (CCRF) in a Japanese population. The subjects were 2,476 men and women who participated in a health examination in Tokyo. The CCRF was defined according to the International Diabetes Federation (IDF) and the Japanese Committee of the Criteria for Metabolic Syndrome (JCCMS). The effective (accurate and sensitive) values were tested using the receiver operating characteristics analysis. The accurate (maximised sensitivity plus specificity) values were 81 cm and 80 cm using the IDF and JCCMS criteria for men, and 82 cm for both criteria for women. From the ROC curve, 85 cm was identified as an effective value for men. Thus, the effective cut-off value of WC for the Japanese should be ~85 cm for men and ~82 cm for women."
http://www.dvdres.com/issue/current

(WO/2005/052120) APPARATUS AND METHODS FOR ASSESSING METABOLIC ...
A similar calculation was performed to calculate an"effective"value of the normalized plasma free fatty acid concentration at each measurement time. ...
www.wipo.int/pctdb/en/wo.jsp?WO=2005/052120&IA=WO2005/05212...

I think what is meant is that the values being used here have been taken from the .... study etc.