Here are entered works on estimating and evaluating the actual or potential hazards that toxic substances pose to an ecosystem. Works on estimating and evaluating the effects that human activities have on living organisms and their habitats are entered under Ecological assessment (Biology).
Here are entered works on the process of determining the health effects of exposure of individuals or of a population to hazardous materials and/or situations, or on the adverse consequences that may result from the use of a technology or some other action. --subdivision Health risk assessment under classes of persons, e.g. Older people--Health risk assessment
Here are entered works on the process of gathering data on the health status of a patient through interview, observation, examination, etc., in nursing. Works on the problem-oriented description of a patient's actual or potential health problems that a nurse is licensed and competent to treat are entered under Nursing diagnosis.
Here are entered works on the methods and techniques employed in assessing the need for programs, projects, or products. --subdivision Prevention--Needs assessment under individual diseases and types of diseases, e.g. Cancer--Prevention--Needs assessment