nomogram


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nomogram

 [nom´o-gram]
a graph with several scales arranged so that a straightedge laid on the graph intersects the scales at related values of the variables; the values of any two variables can be used to find the values of the others.

nom·o·gram

(nōm'ō-gram),
1. A form of line chart showing scales for the variables involved in a particular formula such that corresponding values for each variable lie in a straight line intersecting all the scales.
2. A line chart in toxicology that relates time since toxic ingestion with blood levels of the offending agent to estimate levels of toxicity and to guide therapy.
Synonym(s): nomograph (2)
[G. nomos, law, + gramma, something written]

nomogram

/nom·o·gram/ (nom´o-gram) a graph with several scales arranged so that a straightedge laid on the graph intersects the scales at related values of the variables; the values of any two variables can be used to find the values of the others.

nomogram

[nom′əgram, nō′mə-]
Etymology: Gk, nomos, law, gramma, a record
1 a graphic representation, by any of various systems, of a numeric relationship.
2 a graph on which a number of variables are plotted so that the value of a dependent variable can be read on the appropriate line when the values of the other variables are given.

nomogram

An alignment chart in which there are ≥ 3 abscissas, each measuring a specific parameter and mathematically or empirically defined as having a relationship to the other two; the abscissas are placed parallel to each other on an open 2-D field; a straight line drawn when 2 parameters are known allows determination of the value of a 3rd–unknown parameter

nom·o·gram

(nōmō-gram)
A form of line chart showing scales for the variables involved in a particular formula in such a way that corresponding values for each variable lie in a straight line intersecting all the scales.
[G. nomos, law, + gramma, something written]

tonography 

Technique for measuring the facility of outflow of aqueous humour from the eye under the continuous pressure exerted by the weight of a tonometer over a given period of time. The instrument usually employed for tonography is an electronically recording Schiötz tonometer. In this technique, the pressure is continuously recorded over a four-minute period and the outflow is deduced by utilizing a specifically designed diagram, called a nomogram (which is a graphical representation of one, or more, mathematical relationships whereby the desired value may be found without calculation by placing a straight edge across the diagram). The results of tonography can indicate the presence of established glaucoma, although the technique is not very reliable for borderline cases.

nom·o·gram

(nōmō-gram)
Linear chart showing scales for the variables involved in a particular formula such that corresponding values for each variable lie in a straight line intersecting all the scales.
[G. nomos, law, + gramma, something written]

nomogram

a graph with several scales arranged so that a straightedge laid on the graph intersects the scales at related values of the variables; the values of any two variables can be used to find the values of the others.
References in periodicals archive ?
1,4,6,7,9,14-24) In total, the preoperative Karakiewicz nomogram, postoperative Karakiewicz nomogram, Kattan nomogram, and the Cindolo nomogram were validated in 12 065, 12 868, 6036 and 4045 patients, respectively.
7%) of our patients had a Q max more than the 25th percentile on a Kajbafzadeh nomogram, and three patients had a Q max below the 5th percentile (one case of urethral stricture and two cases of meatal stenosis).
24-25) The serum acetaminophen concentration, when obtained between four and (24) hours after the ingestion, can be interpreted to determine the need for N-acetylcysteine treatment using the Rumack-Matthew nomogram.
Nomogram algorithms incorporate multiple independent prognostic factors into a mathematical model to predict outcomes for individual patients.
The MSKCC nomogram for prediction the likelihood of non-sentinel node involvement in a German breast cancer population
In the 1960's, the Siggaard-Andersen nomogram used this value to further explain the extent of the non-respiratory cause of a patient's abnormal pH.
This allows the construction of a nomogram such as the one in Figure 1.
None of the blood levels at four hours were above what was considered as unsafe according to the Matthew-Rumack nomogram (6).
Patil and Smith obtained data for generating a computerized neural network from a nomogram previously published by Sarah de Ferranti from the Department of Cardiology at Children's Hospital in Boston and Harvard Medical School, and by Nader Rifai from the Department of Laboratory Medicine at Children's Hospital and Harvard Medical School's Department of Pathology.
The temperature vs time function was adopted based on the nomogram (Fig 4) and formulas (1), (2).
They were also told that low intoxication could be maintained by snacking, drinking water between alcoholic drinks, and using the nomogram printed on the back of the flyer.