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

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]
References in periodicals archive ?
Pretreatment nomogram for predicting the outcome of three-dimensional conformal radiotherapy in prostate cancer.
The nomogram and calibration plots were constructed using the "rms" package, while DCA was performed using the "dca.R" package.
Finally, the established nomogram was used to verify survival in the validation cohort.
To provide a measurable tool for predicting individual probability of T2DM, we chose the most convenient "stepwise model" for the nomogram (Figure 3).
We could not use the SESCD score to set up a predictive model either because the number of patients with complete mucosal healing was so limited that it could not meet the need of an effective nomogram. Also, according to the original article presenting the SESCD score, the SESCD score is limited because it is calculated only with the disease behavior under colonoscopy but omits the clinical manifestations, but disease activity is not necessarily reflected on the mucosa [28].
Newborns met criteria for phototherapy treatment based on the age in hours of life, risk factor assessment, and above or within 1 mg/dL below the AAP's phototherapy nomogram level to treat.
In 1997, the international continence society published a provisional nomogram, which is a modification of the Abrams-Griffiths nomogram and used AG number to classify bladder obstruction into 3 groups.
We have proposed a nomogram that incorporates the significant factors in a South African population.
Alternatively, mortality risk predictions, incorporating the contribution of physiological or biochemical parameter combinations, may be calculated using a simple graphic calculation tool called a nomogram [12].