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The health care industry incorporates several sectors that are dedicated to providing health care services and products. As a basic framework for defining the sector, the United Nations’ International Standard Industrial Classification categorizes health care as generally consisting of hospital activities, medical and dental practice activities, and “other human health activities”. The last class involves activities of, or under the supervision of, nurses, midwives, physiotherapists, scientific or diagnostic laboratories, pathology clinics, residential health facilities, patient advocates,[17] or other allied health professions, e.g. in the field of optometry, hydrotherapy, medical massage, yoga therapy, music therapy, occupational therapy, speech therapy, chiropody, homeopathy, chiropractics, acupuncture, etc.[18]
In addition, according to industry and market classifications, such as the Global Industry Classification Standard and the Industry Classification Benchmark, health care includes many categories of medical equipment, instruments and services as well as biotechnology, diagnostic laboratories and substances, and drug manufacturing and delivery.
For example, pharmaceuticals and other medical devices are the leading high technology exports of Europe and the United States.[19][20] The United States dominates the biopharmaceutical field, accounting for three-quarters of the world’s biotechnology revenues.[19][21]
The quantity and quality of many health care interventions are improved through the results of science, such as advanced through the medical model of health which focuses on the eradication of illness through diagnosis and effective treatment. Many important advances have been made through health research, including biomedical research and pharmaceutical research, which form the basis for evidence-based medicine and evidence-based practice in health care delivery.
For example, in terms of pharmaceutical research and development spending, Europe spends a little less than the United States (€22.50bn compared to €27.05bn in 2006). The United States accounts for 80% of the world’s research and development spending in biotechnology.[19][21]
In addition, the results of health services research can lead to greater efficiency and equitable delivery of health care interventions, as advanced through the social model of health and disability, which emphasizes the societal changes that can be made to make population healthier.[22] Results from health services research often form the basis of evidence-based policy in health care systems. Health services research is also aided by initiatives in the field of AI for the development of systems of health assessment that are clinically useful, timely, sensitive to change, culturally sensitive, low burden, low cost, involving for the patient and built into standard procedures.[23]
