Description Usage Arguments Value References Examples
referenceVals
and testVals
are assumed to contain
paired glucose values from a reference method and a test method,
respectively. The discrepancy between the two values, as well as the
type of error grid desired (Type 1 or Type 2 diabetes), is used to place the
pair into a Parkes (Consensus) error grid zone, according to the
criteria described in the second reference below. unit
contains info
on the unit of measurement. Two options exist: "gram"
for mg/dL and
"mol"
for mmol/l with "gram"
applied by default.
1 | getParkesZones(referenceVals, testVals, type = 1, unit = "gram")
|
referenceVals |
A vector of glucose values obtained via the reference method. |
testVals |
A vector of glucose values obtained via a non-reference
method (e.g. a new meter). The values in this vector are paired with those
in |
type |
An integer (1 or 2) specifying whether to obtain zones for Type 1 or Type 2 diabetes. Defaults to 1. |
unit |
A string specifying the units of measurement. This should be either
|
A character vector is returned, with each element being one of
"A"
, "B"
, "C"
, "D"
, or "E"
.
Parkes, J. L., S. L. Slatin, S. Pardo, and B.H. Ginsberg. "A New Consensus Error Grid to Evaluate the Clinical Significance of Inaccuracies in the Measurement of Blood Glucose." Diabetes Care 23, no. 8 (August 2000): 1143-48
Pfutzner, Andreas, David C. Klonoff, Scott Pardo, and Joan L. Parkes. "Technical Aspects of the Parkes Error Grid." Journal of Diabetes Science and Technology 7, no. 5 (September 2013): 1275-81
1 2 3 4 5 6 7 | zones <- getParkesZones(glucose_data$ref, glucose_data$test)
# counts
table(zones)
# percentages
round (table (zones) / length (zones) * 100, digits=2)
|
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