/**********************************************************************

THIS IS AN EXAMPLE OF A PROGRAM THAT CAN BE USED TO READ IN THE 
LINKED NCHS-SSA (FINAL) FEASIBILITY STUDY ASCII FILE. 

TO DOWNLOAD AND SAVE THE LINKED NCHS-SSA (FINAL) FEASIBILITY STUDY
ASCII FILE TO YOUR HARD DRIVE, FOLLOW THESE STEPS:

*STEP 1: DESIGNATE A FOLDER ON YOUR HARD DRIVE TO DOWNLOAD THE LINKED
         NCHS-SSA (FINAL) FEASIBILITY STUDY ASCII FILE. IN THIS
         EXAMPLE, THE DATA WILL BE SAVED TO:
        'C:\Feasibility Study Data\'

*STEP 2: DOWNLOAD THE ASCII DATA FROM THE NCHS WEB SITE.
         GO TO THE NCHS WEB SITE (LINK BELOW) AND DOWNLOAD THE LINKED
         NCHS-SSA (FINAL) FEASIBILITY STUDY ASCII FILE TO THE FOLDER
        'C:\Feasibility Study Data\'


ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/datalinkage/feasibility_study_data/ssa/


NOTES:

THIS PROGRAM ASSUMES THAT THE ASCII DATA FILE IS IN STATA"S WORKING
DIRECTORY.  AN EXAMPLE OF HOW TO CHANGE THE WORKING DIRECTORY 
WITHIN STATA IS THE FOLLOWING COMMAND: cd "C:\Feasibility Study Data\"


*IMPORTANT INFORMATION REGARDING THE SURVEY ID VARIABLE:

FOR NHIS USE PUBLICID AS THE ID VARIABLE   
FOR NHANES USE SEQN AS THE ID VARIABLE  
FOR NNHS USE RESNUM AS THE ID VARIABLE 

*********************************************************************/
# delimit ;
clear;

/* CHANGE WORKING DIRECTORY TO FIND FILE */
cd "C:\Feasibility Study Data\";
/*READ IN THE LINKED NCHS-SSA (FINAL) FEASIBILITY STUDY ASCII FILE */
/* INPUT ALL NEW VARIABLES */
infix 
str PUBLICID		1-14 
SEQN			1-5
RESNUM			1-7 /* FOR NNHS 1985 RESNUM SHOULD BE CREATED USING POSITIONS 1 - 7 */
RESNUM			1-6 /* FOR NNHS 1995 1997 AND 2004 RESNUM SHOULD BE CREATED USING POSITIONS 1 - 6 */
SSA_MATCH		15
ON_MBR_FLAG		16
ON_SSR_FLAG		17
ON_PHUS_FLAG		18
ON_831_FLAG		19
ON_QOC_FLAG		20

using MEDICAID_FEASIBILITY_[survey name].dat
;

/* DEFINE VARIABLE LABELS */

label variable publicid     "NCHS SURVEY ID NUMBER";
label variable seqn         "SAMPLE SEQUENCE NUMBER (PUBLIC ID)";
label variable resnum       "NCHS SURVEY IDENTIFIER - RESIDENT RECORD NUMBER";
label variable SSA_MATCH    "SSA MATCH STATUS";
label variable ON_MBR_FLAG  "ON MBR FILE INDICATOR";
label variable ON_SSR_FLAG  "ON SSR FILE INDICATOR";
label variable ON_PHUS_FLAG "ON PHUS FILE INDICATOR";
label variable ON_831_FLAG  "ON 831 FILE INDICATOR";
label variable ON_QOC_FLAG  "ON QOC FILE INDICATOR";


/* FORMAT ZERO FILL ID VARIABLES */
/*format SEQN  %05.0f */
/*format RESNUM  %06.0f */
/*format RESNUM  %07.0f */


/* DISPLAY OVERALL DESCRIPTION OF FILE */
describe;
codebook,all;

/* DATA FILE IS STORED IN FEASIBILITY.DTA */
save feasibilty.dta, replace;

#delimit cr