Synth Command Issues

[Prachi Mehta]

Hi I am running the following command and getting this error and I am not sure what it implies. If someone could help me with this. Thank you in advance. ** C1 = country

tsset C1 Year panel variable: C1 (strongly balanced) time variable: Year, 1990 to 2019 delta: 1 unit synth Educationalattainmentatleast Quotas GDPcurrentUS GDPpercapitaCurrentUS Governmentexpenditureoneducat Governmentexpenditureonheal

> th DemocracyPerformanceNumber Populationages1564oftota Populationages1564female Populationages1564male Populationages1564total Populat

> ionfemale Populationfemaleoftotal Populationmale Populationtotal Educationalattainmentatleast(1990) Educationalattainmentatleast(1991)

> Educationalattainmentatleast(1992) Educationalattainmentatleast(1993) Educationalattainmentatleast(1994) Educationalattainmentatleast

> (1995) Educationalattainmentatleast(1996) Educationalattainmentatleast(1997) Educationalattainmentatleast(1998) Educationalattainmenta

> tleast(1999) Educationalattainmentatleast(2000) Educationalattainmentatleast(2001) Educationalattainmentatleast(2002), trunit(17)trper

> iod(2003)xperiod(1990(1)2002) nested fig

Synthetic Control Method for Comparative Case Studies

First Step: Data Setup

at least one time period specified in xperiod() not found in timevar

r(198);

[Jared Greathouse]

2003 ain't in the numlist xperiod(1990(1)2002)


Also, please put your code in code delimiters like this

xtset C1 Year, y

[Prachi Mehta]

okay thank you so much

[Jared Greathouse]

Oh and in my personal opinion, you're better off doing

Educationalattainmentatleast(1990/2002)

Classic SCM matches on averages of the outcomes or covariates. You're basically averaging it from 1990/2002, but you're not using the notation to more efficiently do this.