checkPDF: Extract statistics and recompute p-values from pdf files.

In chartgerink/statcheckTEMP: Extract statistics from articles and recompute p values

Description

Extracts statistical values (currently only t and F statistics) from PDF files. To this end the "pdftotext" program is used to convert PDF files to plain text files. This must be installed and PATH variables must be properly set so that this program can be used from command line.

Usage

checkPDF(files, ...)

Arguments

files	Vector with paths to the PDF files.
...	Arguments sent to statcheck

Details

See statcheck for more details. Use checkPDFdir to import every PDF file in a given directory. Currently only statistics in the form "(stat (df1, df2) = value, p = value)" are extracted.

Note that this function is still in devellopment. Some statistical values can be missed, especially if the notation is unconvetional. It is recommended to manually check some of the results.

Value

A data frame containing for each extracted statistic:

Source	Name of the file of which the statistic is extracted
Statistic	Character indicating the statistic that is extracted
df1	First degree of freedom
df2	Second degree of freedom (if applicable)
Value	Reported value of the statistic
Reported.Comparison	Reported comparison, when importing from pdf this will often not be converted properly
Reported.P.Value	The reported p-value, or NA if the reported value was NS
Computed	The recomputed p-value
Raw	Raw string of the statistical reference that is extracted
InExactError	Error in inexactly reported p values as compared to the recalculated p values
ExactError	Error in exactly reported p values as compared to the recalculated p values
DecisionError	The reported result is significant whereas the recomputed result is not, or vice versa.

Author(s)

Sacha Epskamp <[e-mail]> & Michele B. Nuijten <[e-mail]>

See Also

statcheck, checkPDFdir

Examples

# given that my PDF file is called "article.pdf"


# and I saved it in "C:/mydocuments/articles"





 # checkPDF("C:/mydocuments/articles/article.pdf")

chartgerink/statcheckTEMP documentation built on May 13, 2019, 3:37 p.m.