"Weight-to-height" is a common term used in assessing nutritional health, and the meaning needs to be reflected in your text. It means approximately the same thing as body mass index (BMI), though the numbers are calculated differently. Weight-to-height ratio is used more in medicine in relation to pathological conditions, malnourished children, assessment of treatment, etc.

460,000 refs for ["weight-to-height ratio"].
74,100 refs for ["weight-for-height ratio"]

Examples:

Reducing your weight-to-height ratio lowers your BMI, which decreases your risk of developing cancer of the ... Colorectal Cancer Prevention and Treatment. ...
coloncancer.about.com/od/.../a/LosingWt2PrevCC.htm

Women whose weight to height ratio is below a certain level, will be encouraged to increase their weight prior to any treatment. As weight drops women stop ...
www.fertilityfirst.com.au/treatment.../pre-treatment-prepar...

significantly lower in the malnourished children compared to controls and there was a significant positive correlation with the weight-to-height ratio. ...
tropej.oxfordjournals.org/cgi/reprint/44/6/362.pdf - Similar -
by ESA Hassanein - 1998

... as having a weight to height ratio that is at least 70% below the median. ... Depending on the severity, a malnourished child's I.Q. could be lower by ...
world-hunger.suite101.com/article.cfm/the_silver_bullet

Top questions and answers about Weight-to-Height-Ratio-Chart. Find 4 questions and answers about Weight-to-Height-Ratio-Chart at Ask.com.
www.ask.com/questions-about/Weight-to-Height-Ratio-Chart

Weight-to-Height Ratio A variety of weight-to-height tables have been used over the years to classify a person as being "overweight" or "underweight" by ...
books.google.com/books?isbn=0880116544... -

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Note added at 3 days2 hrs (2009-10-06 18:46:57 GMT) Post-grading
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