read_data: Read data from csv files
In bgulbis/edwr: Standardized Functions for Working with Data from the EDW

Description Usage Arguments Details Value Examples

read_data takes a directory and file name and reads in all matching csv files and binds them together into a data frame

1	read_data(data.dir, file.name, edw = TRUE, archive = FALSE)

`data.dir`	A character string with the name of the directory containing the data files
`file.name`	A character string with name of data file or pattern to match
`edw`	A boolean indicating if the data came from EDW; set to FALSE for
`archive`	A boolean indicating if the data was extracted as a csv archive. If TRUE, will recursively search folders for csv files and will skip the first line for column headers

This function takes a directory and file name and reads in all matching csv files and binds them together into a data frame using read_csv from readr. The resulting data frame has a class of edwr, and can then be passed to one of the edwr-related class types for variable renaming and type setting (example: as.labs).

The following table lists the edwr-related class which corresponds to each EDW Standard Project Queries.

edwr Class Name	---	EDW Query Name
blood		Blood Products
charges		Charges - [All, Department Prompt]
demographics		Demographics
diagnosis		Diagnosis Codes (ICD-9/10-CM) - All
drg		DRG Codes - All
encounters		Encounters - by Person ID
events		Clinical Events - Prompt
icu_assess		ICU Assessments (CAM-ICU, GCS, RASS)
id		Identifiers - by FIN
		Identifiers - by MRN
		Identifiers - by PowerInsight Encounter Id
labs		Labs - ABG
		Labs - CBC
		Labs - Chemistry
		Labs - Coags
		Labs - HIT
		Labs - LFTs
		Labs - Pregnancy
		Labs - Renal
		Urine Drug Screen
		Vomiting Output
locations		Location History
measures		Measures (Height and Weight)
meds_cont		Medications - Inpatient Continuous - [All, Prompt]
meds_freq		Medications - Inpatient Intermittent with Frequency - [All, Prompt]
meds_home		Medications - Home and Discharge - [All, Prompt]
meds_sched		Medications - Inpatient Intermittent - [All, Prompt]
mpp		MPP's Ordered - [All, Order Prompt]
mrn		Identifiers - Person by MRN
order_by		Orders - Prompt
order_detail		Orders - from Clinical Event Id - Prompt
patients		Patients - by CDM charge - HealthQuest - [Location Prompt, System]
		Patients - by ICD-9/10-CM Diagnosis Code
		Patients - by Medication
		Patients - by Unit Admission
problems		Problem List
procedures		Procedure Codes (ICD-9-CM/ICD-10-PCS) - All
radiology		Radiology Reports
services		Service History
surgeries		Surgeries
uop		Urine output
vent_settings		Ventilator Data - Settings
vent_times		Ventilator Data - Start and Stop
visits		Visit Data
vitals		Vitals
warfarin		Warfarin Information

A data frame of class tbl_edwr

x <- read_data(
  data.dir = paste0(system.file(package = "edwr", "extdata")),
  file.name = "demographics.csv"
)

str(x)
class(x)

y <- as.demographics(x)
class(y)