patterns: Patterns Lookup Table for Extracting Components of Dosage...
In CALIBERdrugdose: Extract Drug Dose From Unstructured Dosage Text
patterns R Documentation
Patterns Lookup Table for Extracting Components of Dosage Instruction
Description
This lookup table is used in the final stage of standardising dosage text
and extracting structured information. It is used after multiwords
but instead of replacing a phrase, it extracts components of the dose.
The rules in this table are applied one after the other in ascending order of
the order column.
Usage
data(patterns)
Format
A data frame with observations on the following 15 variables.
wordscharacter; pattern phrase
qtycharacter; dose quantity or regular expression
component for extracting quantity from the matched text.
unitsa character vector
freqa character vector
tota character vector
prioritya numeric vector
maxa character vector
timea character vector
changea logical vector
choicea character vector
doubledosea character vector
durationa character vector
commenta character vector
categorya character vector
ordera numeric vector
Details
The structured elements can be extracted using regular expression symbols, e.g. \1
References
Shah AD, Martinez C. An algorithm to derive a numerical daily dose
from unstructured text dosage instructions.
Pharmacoepidemiol Drug Saf 2006; 15(3): 161-166. doi: 10.1002/pds.1151
http://onlinelibrary.wiley.com/doi/10.1002/pds.1151/
Examples
data("patterns")
# Convert to patterns dictionary for analysis
patterns <- as.drugdose_patterns(patterns)
CALIBERdrugdose documentation built on July 4, 2024, 3:01 p.m.
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| patterns | R Documentation |
Patterns Lookup Table for Extracting Components of Dosage Instruction
Description
This lookup table is used in the final stage of standardising dosage text
and extracting structured information. It is used after multiwords
but instead of replacing a phrase, it extracts components of the dose.
The rules in this table are applied one after the other in ascending order of
the order column.
Usage
data(patterns)Format
A data frame with observations on the following 15 variables.
wordscharacter; pattern phrase
qtycharacter; dose quantity or regular expression component for extracting quantity from the matched text.
unitsa character vector
freqa character vector
tota character vector
prioritya numeric vector
maxa character vector
timea character vector
changea logical vector
choicea character vector
doubledosea character vector
durationa character vector
commenta character vector
categorya character vector
ordera numeric vector
Details
The structured elements can be extracted using regular expression symbols, e.g. \1
References
Shah AD, Martinez C. An algorithm to derive a numerical daily dose from unstructured text dosage instructions. Pharmacoepidemiol Drug Saf 2006; 15(3): 161-166. doi: 10.1002/pds.1151 http://onlinelibrary.wiley.com/doi/10.1002/pds.1151/
Examples
data("patterns")
# Convert to patterns dictionary for analysis
patterns <- as.drugdose_patterns(patterns)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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