Serum Gamma-Glutamyl Transferase and a Somatic Health Score in Middle-Aged Men

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Abstract
In an ongoing population investigation of middle-aged men in Malmö, Sweden, several health screening variables showed strong but crude individual covariations with the level of the hepatic enzyme, serum gamma-glutamyl transferase (GGT). These variables were combined, according to an analysis of their normal distributions, into a score index which exhibited a much smoother correlation with low, normal, and elevated levels of GGT when tested in a random population subsample. It is concluded that this scoring system may find further utilisation as a general descriptive method of recording statistical covariations between health screening tests and sum them up.

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