I´m trying to merge basic montly CPS files from 1994-2014 to create gross flows of workers. I have 3 questions regarding the merging procedure and analysis of the data.
1.My first question is:
I read in Drew et al.(2013) that new codes CPSIDH a CPSIDP would be available at IPUMs to facilitate the merging. However, I can not find this variables. Are they available or do I have to construct them myself based on the paper? I read as well here (http://www.census.gov/cps/files/How%2…) That to link individuals I should use Identifiers HRHHID, HRSAMPLE, HRSERSUF, HRHHNUM (for files jan 1994-april2004) and HRHHID1 and hrhhid2 (May 2004 -present). And add variables PULINENO, PUSEX and PRTAGE to both samples. I´m confuse about which method to use, what do you recommend?
- My second question is:
I read as well that there would be longitudinal weights available for flow data but I cannot find it. are they already available? If not, should I use WTFINL for weightning matched people across months? And if yes, how sould I do it, do I have to add the final weights for each month considered and then divided by the number of months?
- My third questions is:
In order to analyze the data using stata programe, I have to svyset my file with the data base. There are clear instructions on the web about how to do it for AISEC data, but there is no information for basic monthly data and I do not know what to put in strata, PSUs, etc. I read the CPS sample design and that is a state based sample, and that the ¨PSUs¨are counties…Does it mean that I have to svyset my data with WTFINL as my weight, state as PSUs, strata none and vce (Taylor linealization)? I also found the variables CLUSTER and STRATA to get the variance…since the way I svyset my data will be important for geting right the variance and confidence intervals (no problem for point estimates). So I wonder how I should svyset my data correctly for working with basic monthly files?
Thank you very much for your answer