Uloading

Uloading

Chililabdata/lastobservation.do

@@ -0,0 +1,39 @@
+set mem 500M
+* Determine the last location that an individual was resident at and the last time that location was visited.
+clear 
+* Calculate the last date that a location was visited
+cd \chililabdata\data
+use  observation
+sort locationid
+egen lastdate=max(obs_entry_date), by(locationid)
+format lastdate %d
+drop if !(obs_entry_date==lastdate)
+keep locationid obs_entry_date
+sort locationid
+save lastvisit,replace
+
+clear 
+
+* Determine the last location that an individual was resident
+
+use individres
+sor individid
+egen lastsdate=max(res_sdate), by(individid)
+format lastsdate %d
+drop if !(res_sdate==lastsdate)
+keep individid locationid res_edate res_eeventtype
+sort individid
+save lastlocation,replace
+
+* Combine last location an individual was resident and the last visit date of the location 
+
+sort locationid 
+merge locationid using lastvisit, nokeep keep(obs_entry_date)
+rename obs_entry_date lastvisit
+drop _merge
+
+sort individid
+save lastobservation, replace 
+
+
+