command avar is unrecognized

[Olivia Li]

Hi eveyone , when I am trying to do parallel trend test, I use the command " eventstudyinteract lnpunishamount pre*y current post*y ,absorb(city year) vce(robust) cohort(reformyear) control_cohort(lastcohort) ".
But I got "command avar is unrecognized" from stata.

Cound you please tell me whats wrong ?

[Rich Goldstein]

have you downloaded and installed this user-written command (SSC)?

[William Lisowski]

The output of help eventstudyinteract tells us

    eventstudyinteract requires avar (Baum and Schaffer, 2013) and reghdfe (Sergio, 2017) to be
    installed.  Installation of eventstudyinteract will install avar and reghdfe (and its
    dependencies) from ssc if necessary.

But when I installed eventstudyinteract from SSC, it did not in fact install either avar or reghdfe, so you will have to do that yourself, as Rich suggests.

[Olivia Li]

I tried, it indeed is because I didn't download it . Thanks!