Final answer:
Severe protein depletion is indicated by a low CHI percentage, generally below 70%. CHI stands for corrected height index and measures a person's nutritional status based on their actual height compared to their expected height.
Step-by-step explanation:
Severe protein depletion is indicated by a low CHI percentage. CHI stands for corrected height index, which measures a person's nutritional status by comparing their actual height to their expected height based on age. A CHI percentage below 70% is generally considered indicative of severe protein depletion.
For example, if a person's expected height at a certain age is 160 cm but their actual height is only 120 cm, their CHI percentage would be 75% (120/160 = 0.75 or 75%). This indicates moderate protein depletion. However, if their actual height is only 90 cm, their CHI percentage would be 56% (90/160 = 0.56 or 56%), indicating severe protein depletion.