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Filling missing values on variables only appearing every four years in the panel
Filling missing values on variables only appearing every four years in the panel

Hi Statalist.

I have a couple of variables that only appear in waves 4, 7, 10, 14, 18 (of a panel dataset of 18 waves). As such, these variables contain large numbers of missing values. I used the code (slightly amended from here)

Code:

replace dummy = L1.dummy if missing(dummy)

which fills in the gaps between waves 4 - 18. How can I amend this code to copy the response from wave 4 back to waves 1 to 3?

Help kindly appreciated.

Stata v.15.1

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Filling missing values on variables only appearing every four years in the panel

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