Hi everyone,

 

I’m working with a panel of firm/years observations. My panel not only is
unbalanced but also have some gap’s in years. 

For example, firm 1 has 1999, 2000, 2001, 2004, 2005, firm 2 has 2000, 2001,
2003, 2005, and so on.

I’m using the plm package and what I’m asking is how can I handle with this
gap’s ?

 

Thank you very much,

 

Cecília Carmo

Universidade de Aveiro (Portugal)


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