ConvertMedUnits: Convert medical measurements between International Standard...

In warnes/gdata: Various R Programming Tools for Data Manipulation

Convert medical measurements between International Standard (SI) and US 'Conventional' Units.

Description

Convert Medical measurements between International Standard (SI) and US 'Conventional' Units.

Usage

ConvertMedUnits(x, measurement, abbreviation,
                to = c("Conventional", "SI", "US"),
                exact = !missing(abbreviation))

Arguments

x	Vector of measurement values
measurement	Name of the measurement
abbreviation	Measurement abbreviation
to	Target units
exact	Logicial indicating whether matching should be exact

Details

Medical laboratories and practitioners in the United States use one set of units (the so-called 'Conventional' units) for reporting the results of clinical laboratory measurements, while the rest of the world uses the International Standard (SI) units. It often becomes necessary to translate between these units when participating in international collaborations.

This function converts between SI and US 'Conventional' units.

If exact=FALSE, grep will be used to do a case-insensitive sub-string search for matching measurement names. If more than one match is found, an error will be generated, along with a list of the matching entries.

Value

Returns a vector of converted values. The attribute 'units' will contain the target units converted.

Author(s)

Gregory R. Warnes [e-mail]

References

https://globalrph.com/medical/conventional-units-international-units/

See Also

The data set MedUnits provides the conversion factors.

Examples

data(MedUnits)

# Show available conversions
MedUnits$Measurement

# Convert SI Glucose measurement to 'Conventional' units
GlucoseSI <- c(5, 5.4, 5, 5.1, 5.6, 5.1, 4.9, 5.2, 5.5) # in SI Units
GlucoseUS <- ConvertMedUnits(GlucoseSI, "Glucose", to="US")
cbind(GlucoseSI, GlucoseUS)

## Not run: 
# See what happens when there is more than one match
ConvertMedUnits(27.5, "Creatin", to="US")

## End(Not run)

# To solve the problem do:
ConvertMedUnits(27.5, "Creatinine", to="US", exact=TRUE)

warnes/gdata documentation built on Dec. 5, 2023, 12:20 a.m.