‘Or’ condition for time dummies

[Riaz Chaus]

Hi,

I have a question about time dummies. Is it possible to have an ‘or’ condition for a time dummy? What I mean is for example: say my panel data is for the years 2000-2010, and I want to include a time dummy for whether two specific years (2005 and 2008) were significant or not. So D=1 if the given year is 2005 OR 2008, and D=0 otherwise. I am struggling to code this, help would be much appreciated!!

Many thanks,
Riaz

[Joseph Coveney]

Maybe

generate byte y0508 = inlist(year, 2005, 2008) if !mi(year)

[Clyde Schechter]

gen wanted = inlist(year, 2005, 2008)

is the simplest way.

A more literal translation of the wording into code, though somewhat longer to type is:

gen wanted = (year == 2005) | (year == 2008)

Added: Crossed with #2, which handles missing values of year differently.