| | Energy and protein requirements |
 | | It is logical, therefore, that the appropriate PE ratio for an individual should be described as part of the distribution of possible satisfactory ratios of protein to energy requirements among similar individuals. |
 | | From the distribution of possible PE ratios, probability statements may be derived concerning the probable adequacy or inadequacy of any particular PE ratio for an individual of the specified type (age, sex, activity, etc.). |
 | | The equation defines a PE ratio such that, with any probability (or risk) one wishes to assign, there is confidence that a higher observed dietary ratio would meet or exceed the true requirement ratio of a random individual in the group—a “safe” PE ratio for that class of individual. |
| www.fao.org /DOCREP/003/AA040E/AA040E11.htm (3090 words) |