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Morbidity:
a measure of all sickness or ill-health. Usually expressed as proportion (ratio)
of a standard unit of the population (usually 10,000 or 100,000).
Most of the measures of health and disease are expressed in the form of ratios. A ratio
is a relative number expressing the magnitude of one occurrence in terms of another.
Usually it is used in a specific sense where the numerator and denominator are two
separate and distinct quantities. Neither is included in the other. A ratio does not
depend on the size of the number, but on their relation to each other; i.e.,6 to 4, 75 to
50 and 10929 to 7286 may al be described by their ratio of 3:2 . |