Unmatched households when merging hhresp with lsoa data
Hi I am trying to distribute LSOA identifiers to household level data using wave 3. I have an issue when I merge the c_hhresp file with the c_lsoa11_protect file using the below stata code:
use c_hhresp.dta, clear
merge m:1 c_hidp using c_lsoa11_protect.dta
When performing this command I find 7 households from the hhresp file which are not found in the LSOA file, and 6,507 households from the LSOA file not found in the hhresp file.
I haven't been able to identify a reason from looking at the data as to why these data are only found in one file, rather than both. I was wondering if you could confirm if the above merge is correct and if so, what the reason is for these data which cannot be matched?