Sosa-Escudero, Walter; Bera, Anil K. - In: Stata Journal 8 (2008) 1, pp. 68-78
This paper derives unbalanced versions of the test statistics for first- order serial correlation and random individual effects summarized in Sosa-Escudero and Bera (2001, Stata Technical Bulletin Reprints, vol. 10, pp. 307–311), and up- dates their xttest1 routine. The derived test statistics...