Body Mass Index (BMI) provides objective criteria of size to enable an estimation to be made of an individual’s level or risk of morbidity and mortality. The BMI, which is derived from the extensive data held by life-insurance companies, is calculated by dividing a person’s weight by the square of his or her height (kilograms/ metres2). Acceptable BMIs range from 20 to 25 and any ?gure above 30 characterises obesity. The Index may be used (with some modi?cation) to assess children and adolescents. (See OBESITY.)... body mass index
A method of obtaining X-ray photographs of the chests of large numbers of people. It has been used on a large scale as a means of screening the population for pulmonary TUBERCULOSIS. It is no longer used in the United Kingdom.... mass miniature radiography
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