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Cross-
Method Statistic Prob.** sections Obs
Null: Unit root (assumes common unit root process)
Levin, Lin & Chu t* 90.7223 1.0000 3 78
Null: Unit root (assumes individual unit root process)
Im, Pesaran and Shin W-stat -2.52288 0.0058 3 78
ADF - Fisher Chi-square 16.2069 0.0127 3 78
PP - Fisher Chi-square 99.0698 0.0000 3 90
** Probabilities for Fisher tests are computed using an asymptotic Chi
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