REDCapCAST/REDCap_split.sas

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2018-01-19 17:50:08 +01:00
/********************************************************************************
*
* FILE: REDCap_split.sas
*
* VERSION: 0.0.0
*
* PURPOSE: Take a REDCap dataset with multiple events and make into several
* tables with primary and foreign keys
*
* AUTHOR: Paul W. Egeler, M.S., GStat
*
* DATE: 22JUN2017
*
*******************************************************************************
*
* INSTRUCTIONS:
*
* 1. Run the SAS code provided by REDCap to import the data
* BUT COMMENT THIS LINE:
*
* format redcap_repeat_instrument redcap_repeat_instrument_.;
*
* 2. Open the data dictionary in MS Excel.
*
* 2a. Copy the first four columns and paste into a new sheet.
*
* 2b. Save the new sheet as a .csv file.
*
* 2c. Close the file.
*
* 3. Change the data dictionary name and file path in the macro call.
*
* 4. Run the macro definition and the macro call
*
*
********************************************************************************/
%MACRO REDCAP_SPLIT(
DATA_DICTIONARY /* The file path for the data dictionary */,
DATA_SET = REDCAP/* The name of the SAS dataset created by REDCap */,
KEY = RECORD_ID /* Variable that links base table with other tables */
);
PROC SQL NOPRINT;
SELECT DISTINCT
REDCAP_REPEAT_INSTRUMENT,
"'"!!trim(REDCAP_REPEAT_INSTRUMENT)!!"'" AS INSTRUMENT_QUOTED
INTO
:INSTRUMENTS SEPARATED BY ' ',
:INSTRUMENT_LIST SEPARATED BY ','
FROM &DATA_SET AS A
WHERE REDCAP_REPEAT_INSTRUMENT GT '';
%LET N_SUBTABLES = &SQLOBS;
%PUT INSTRUMENTS: %LEFT(&INSTRUMENTS);
%PUT INSTRUMENT LIST: %LEFT(&INSTRUMENT_LIST);
%PUT N SUBTABLES: %LEFT(&N_SUBTABLES);
QUIT;
%IF &N_SUBTABLES GT 0 %THEN %DO;
DATA DATA_DICTIONARY;
LENGTH VAR_NAME $ 255 FORM_NAME $ 255 SECTION_HEADER $ 255 FIELD_TYPE $ 255;
INFILE "&DATA_DICTIONARY" FIRSTOBS = 2 DSD DLM = ",";
INPUT VAR_NAME $ FORM_NAME $ SECTION_HEADER $ FIELD_TYPE $;
IF FIELD_TYPE EQ "descriptive" THEN DELETE;
RUN;
PROC SQL NOPRINT;
SELECT VAR_NAME
INTO :VARS_BASE SEPARATED BY ' '
FROM DATA_DICTIONARY AS A
WHERE FORM_NAME NOT IN (&INSTRUMENT_LIST);
%put Base vars: &VARS_BASE;
%DO I = 1 %TO &N_SUBTABLES;
%LET INSTRUMENT_I = %SCAN(&INSTRUMENTS,&I,%STR( ));
SELECT VAR_NAME
INTO :VARS_&INSTRUMENT_I. SEPARATED BY ' '
FROM DATA_DICTIONARY AS A
WHERE FORM_NAME EQ "&INSTRUMENT_I.";
%put &INSTRUMENT_I. vars: &&VARS_&INSTRUMENT_I;
%END;
QUIT;
DATA &DATA_SET._BASE (KEEP = &VARS_BASE);
SET &DATA_SET;
IF MISSING(REDCAP_REPEAT_INSTRUMENT);
RUN;
%DO I = 1 %TO &N_SUBTABLES;
%LET INSTRUMENT_I = %SCAN(&INSTRUMENTS,&I,%STR( ));
DATA &DATA_SET._&INSTRUMENT_I. (KEEP = &KEY redcap_repeat_instance &&VARS_&INSTRUMENT_I);
SET &DATA_SET;
IF REDCAP_REPEAT_INSTRUMENT EQ "&INSTRUMENT_I.";
RUN;
%END;
%END;
%ELSE %DO;
%PUT THERE WERE NO REPEAT INSTRUMENTS IN THE DATASET %LEFT(&DATA_SET);
%PUT NO ACTION WAS TAKEN;
%END;
%MEND REDCAP_SPLIT;