Proc SQL;
create table moth as
Select distinct a.motherid, a.perid as kidid,
a.tage as kidage, a.esex as kidgender, a.EHLTSTAT as kid_currhealth ,
a.EHOSPNIT as kid_nightsinhosp, a.EVISDOC as kid_docvisit
from momkid a, wave5top b
where a.motherid=b.perid
and a.tage lt 18
order by a.motherid, a.tage;
Quit;
Th log is not showing any errors its just showing 0 observations
0 rows 7 columns
No records met your WHERE criteria. Without seeing the data hard to tell if there is any error or not.
Check if you have kidid in table momkid ? (a.kidid = b.kidid)
Some Possible causes
1) No matching Momid = Perid
2) no tage lt 18
or
3) None of the matching Momid=Perid have tage lt 18
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