Lancefield Classification: From 1 Different Sources
a classification of the *Streptococcus bacteria based on the presence or absence of antigenic carbohydrate on the cell surface. Species are classified into the groups A–S. Most species causing disease in humans belong to groups A, B, and D. [R. C. Lancefield (1895–1981), US bacteriologist]
Assignment to predesignated classes on the basis of perceived common characteristics. A means of giving order to a group of disconnected facts.... classification
Arrangement of diseases into groups having common characteristics. Useful in efforts to achieve standardization in the methods of presenting mortality and morbidity data from different sources and, therefore, in comparability. May include a systematic numerical notation for each disease entry. Examples include the International Statistical Classification of Diseases, Injuries and Causes of Death.... classification of disease
A World Health Organisation classi?cation of all known diseases and syndromes. The diseases are divided according to system (respiratory, renal, cardiac, etc.) or type (accidents, malignant growth, etc.). Each of them is given a three-digit number to facilitate computerisation. This classi?cation allows mortality and morbidity rates to be compared nationally and regionally. A revised ICD is published every ten years; a similar classi?cation is being developed for impairments, disabilities and handicaps.... international classification of disease (icd)
Classification of health and health-related domains that describe body functions and structures, activities and participation. The domains are classified from body, individual and societal perspectives. Since an individual’s functioning and disability occurs in a context, this classification includes a list of environmental factors.... international classification of functioning, disability and health (icf) a
A classification of diseases, conditions and other reasons for attendance for primary care. This classification is an adaptation of the ICD but makes allowance for the diagnostic uncertainty that prevails in primary care.... international classification of health problems in primary care (ichppc)
A systematic taxonomy of the consequences of injury and disease. See “disability”; “handicap”; “impairment”.... international classification of impairments, disabilities and handicaps (icidh)
The official classification of the World Organisation of Family Doctors. It includes three elements of the doctor-patient encounter: the reason for the encounter; the diagnosis; and the treatment or other action or intervention.... international classification of primary care (icpc)
A list of diagnoses and identifying codes used by medical practitioners and other health care providers. The coding and terminology provide a uniform language that permits consistent communication on claim forms. Data from earlier time periods were coded using the appropriate revision of the ICD for that time period. Changes in classification of causes of death in successive revisions of the ICD may introduce discontinuities in cause of death statistics over time.... international statistical classification of diseases and related health problems, tenth revision (icd-10)
An instrument which assesses recipient’s care needs. It has a number of classification levels, ranging from high to low care. These classification levels are sometimes used for placement, staffing level and reimbursement purposes.... resident classification instrument
A method of classifying cancers to determine how far they have spread. This helps doctors to determine the best course of treatment and the prognosis; it is also useful in research. Originally de?ned by the American Joint Committee on Cancer, the T applies to the primary tumour, the N to any lymph-node involvement, and the M to any metastatic spread. (See CANCER; METASTASIS; TUMOUR; LYMPH NODES.)... tnm classification
a widely used classification for grading patients’ fitness for surgery prior to the operation. It was developed by the American Society of Anesthesia (ASA), but is now used worldwide. Patients are assigned grades between 1 and 6.... asa classification
a classification of fractures involving the *maxilla (upper jaw) and *orbit. Type I involves the maxilla only, type II the anterior orbit, and type III the posterior orbit. [R. Le Fort (19th century), French surgeon]... le fort classification
(S–H classification) a classification of fractures involving the growth plate of bones (see physis), which is useful for their prognosis and treatment. There are five S–H categories of fracture. [R. Salter and R. I. Harris (20th century), Canadian orthopaedic surgeons]... salter–harris classification
see Salter–Harris classification.... s–h classification
a classification defined by the *UICC for the extent of spread of a cancer. T refers to the size of the tumour, N the presence and extent of lymph node involvement, and M the presence of distant spread (metastasis).... tnm classification
(NS-SEC) an occupational classification of the national population that was developed to replace older systems based on social classes and socio-economic groups. The groupings are intended to stratify the population according to different forms of employment: households are classified according to the occupation of the household reference person (the person renting, owning, or otherwise responsible for accommodation). The NS-SEC is used for official surveys and statistics, including the *census. The analytic version of the classification has eight classes and is the version used for most analyses.... national statistics socio-economic classification
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