Coerce a corpus to a plain data frame

One row per study per framework item, in long form, carrying what each study reported. This is the shape to compute on when the question is about content rather than coverage, such as pulling every housing description out of a corpus.

Usage

# S3 method for class 'instar_corpus'
as.data.frame(x, row.names = NULL, optional = FALSE, ...)

Arguments

x

An instar_corpus.

row.names

Unused, for consistency with the generic.

optional

Unused, for consistency with the generic.

...

Unused.

Value

A data frame with columns study, title, doi, journal, item_id, item, domain, group, status, and value.

Details

summary() gives one row per study, and instar_audit() gives one row per item. This gives both at once.

Examples

if (FALSE) { # \dontrun{
d <- as.data.frame(read_instar("supplements/"))

# every housing description in the corpus
subset(d, item_id == "env_housing" & status == "reported",
       select = c(study, value))
} # }