| risk of recurrence | In medical genetics, the chance that a genetic (inherited) disease present in a family will recur in that family. The concept in general medicine means the chance that an illness we come back again. (12 Dec 1998) |
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| risk patient | Patient who is at risk, because of his/her behaviour or because of the type of person he/she is. (18 Nov 1997) |
| risk reduction | Techniques used to reduce your chances of getting a certain cancer. For example: reducing your dietary fat may help prevent breast cancer. (09 Oct 1997) |
| risk-taking | Undertaking a task involving a challenge for achievement or a desirable goal in which there is a lack of certainty or a fear of failure. It may also include the exhibiting of certain behaviours whose outcomes may present a risk to the individual or to those associated with him or her. (12 Dec 1998) |
| competing risk | An event that removes a subject from being at risk for an outcome under investigation. (05 Mar 2000) |
| pregnancy, high-risk | Pregnancy in which the mother and/or foetus are at greater than normal risk of morbidity or mortality. Causes include lack of adequate prenatal care, previous obstetrical history, pre-existing maternal disease or pregnancy-induced disease, and multiple gestation, as well as advanced maternal age. (12 Dec 1998) |
| health risk assessment | Method of describing an individual's chance of falling ill or dying of a specified condition, based on actuarial calculations that allow for known exposure to risk; expressed as expected age at which death or disease will occur, and intended as a way of drawing an individual's attention to the probable consequences of risk behaviour. (05 Mar 2000) |
| oesophageal carcinoma risk factors | <radiology> P Plummer-Vinson Web, A achalasia, alcohol, B Barrett oesophagus, S stricture, T tylosis, tobacco see: oesophageal carcinoma (12 Dec 1998) |
| thyroid carcinoma risk factors | <radiology> Increased risk of malignancy: young female, male, history of radiation to head or neck, hard lesion, other neck masses, no shrinkage on TSH, family hx of thyroid carcinoma see: thyroid carcinoma (12 Dec 1998) |
| empiric risk | The chance that a disease will occur in a family based upon experience (past history, medical records, etc.) rather than theory. (12 Dec 1998) |
| absolute terminal innervation ratio | The number of motor endplates divided by the number of terminal axons related to them. (05 Mar 2000) |
| accommodative convergence-accommodation ratio | The amount of convergence (measured in prism diopters of convergence) divided by the amount of accommodation (measured in diopters) required to direct both eyes upon an object. (05 Mar 2000) |
| A/G ratio | <abbreviation> Albumin-globulin ratio. (05 Mar 2000) |
| albumin-globulin ratio | The ratio of albumin to globulin in the serum or in the urine in kidney disease; the normal ratio in the serum is approximately 1.55. (05 Mar 2000) |
| ALT:AST ratio | The ratio of serum alanine aminotransferase to serum aspartate aminotransferase; elevated serum levels of both enzymes characterise hepatic disease; when both levels are abnormally elevated and the ALT:AST ratio is greater than 1.0, severe hepatic necrosis or alcoholic hepatic disease is likely; when the ratio is less than 1.0, an acute non-alcoholic hepatic condition is favoured. (05 Mar 2000) |