Aristolochia serpentaria (Virginia snakeroot), Aristolochia reticulata (Texas snakeroot) and in Chinese herbs such as Aristolochia fangchi and Aristolochia mandshurensis (banned in China and withdrawn from Chinese Pharmacopoea 2005; Stephania tetrandra and Magnolia officinalis do not contain aristolochic acid).
age-based rationing. Age-Based Rationing. A proposed form of rationing publicly-funded health care services, in which limits would be placed on the type and amount of such services that would be freely available to persons above a certain age.
To apply direct age-adjustment to a set of rates, the age-specific rate for each age group in the. study population is multiplied by the appropriate weight in the standard population. The sum of. these products is the directly age-adjusted, or age-standardized rate. The age-adjusted rate can be.