This function allows you to export the Arms for a project Note: this only works for longitudinal projects
exportArms(rcon, ...)# S3 method for redcapApiConnection
exportArms(
rcon,
arms = character(0),
...,
error_handling = getOption("redcap_error_handling"),
config = list(),
api_param = list()
)
Returns a data frame with two columns
arm_num The arm number
name The arm's descriptive name
A REDCap connection object as generated by redcapConnection.
Arguments to be passed to other methods.
character identifying the arm numbers to retrieve.
May also be integerish.
An option for how to handle errors returned by the API.
see redcap_error
list Additional configuration parameters to pass to
POST. These are appended to any parameters in
rcon$config.
list Additional API parameters to pass into the
body of the API call. This provides users to execute calls with options
that may not otherwise be supported by redcapAPI.
This function allows you to export the Arms for a project
NOTE: this only works for longitudinal projects.
5.8.2+
Benjamin Nutter
It is not sufficient to make the project a longitudinal project. The
project must satisfy one of two conditions: 1) have at least two arms and
one event defined in each arm; or 2) have one arm and at least two events defined. If
neither of these conditions are satisfied, the API will return a message
such as ERROR: You cannot export arms for classic projects, an
error message that isn't as descriptive of the nature of the problem as
we might like.
If the project information reports that the project is not longitudinal, a data frame with 0 rows is returned without calling the API.
Please refer to your institution's API documentation.
Additional details on API parameters are found on the package wiki at https://github.com/vubiostat/redcapAPI/wiki/REDCap-API-Parameters