The key metrological terms for quality of measured data are Accuracy, Precision and Resolution, as outlined here:
https://discourse.openehr.org/t/default-value-for-precision/2426/16?u=colinbro
citing the International Vocabulary of Metrology to rationalise the common misuse of these terms.
Usage in openEHR documentation seems inconsistent, as in the example here where "Resolution" is termed "Precision." Thus the true meaning of Precision (random variation in the value) is left unaddressed, although present in nearly all biological data.
At Sn 6.1.1.3 https://specifications.openehr.org/releases/RM/latest/data_types.html#_dimensioned_quantities
- a concept of precision, i.e. to what number of decimal places the value is recorded;
- a concept of accuracy, i.e. the known or assumed error in the measurement due to instrumentation or human judgement
This is inconsistent with IVM, suggest
- a concept of *accuracy, i.e. the error in the measurement due to systematic error
(e.g. bias due to calibration or human judgement)
- a concept of *precision, i.e. the error in the measurement due to random error
(e.g. biological or device variations due to noise)
- a concept of *resolution, i.e. the number of *significant digits that the value is recorded or displayed in
See https://www.dnasoftware.com/wp-content/uploads/2015/07/targets.png
The key metrological terms for quality of measured data are Accuracy, Precision and Resolution, as outlined here: https://discourse.openehr.org/t/default-value-for-precision/2426/16?u=colinbro citing the International Vocabulary of Metrology to rationalise the common misuse of these terms. Usage in openEHR documentation seems inconsistent, as in the example here where "Resolution" is termed "Precision." Thus the true meaning of Precision (random variation in the value) is left unaddressed, although present in nearly all biological data. At Sn 6.1.1.3 https://specifications.openehr.org/releases/RM/latest/data_types.html#_dimensioned_quantities - a concept of precision, i.e. to what number of decimal places the value is recorded; - a concept of accuracy, i.e. the known or assumed error in the measurement due to instrumentation or human judgement This is inconsistent with IVM, suggest - a concept of *accuracy, i.e. the error in the measurement due to systematic error (e.g. bias due to calibration or human judgement) - a concept of *precision, i.e. the error in the measurement due to random error (e.g. biological or device variations due to noise) - a concept of *resolution, i.e. the number of *significant digits that the value is recorded or displayed in See https://www.dnasoftware.com/wp-content/uploads/2015/07/targets.png