Model: 1 ( TR ) i t = β 0 + β 1 ( SC ) i t + β 2 ( OS ) i t + β 3 ( GD ) i t + u i t (i)
Model: 2 ( SP ) i t = β 0 + β 1 ( TE ) i t + u i t (ii)
Model: 3 ( SP ) i t = β 0 + β 1 ( SE ) i t + u i t (iii)
Model: 4 ( SP ) i t = β 0 + β 1 ( CE ) i t + β 2 ( RE ) i t + u i t (iv)
Model: 5 ( SP ) i t = β 0 + β 1 ( LI ) i t + β 2 ( CPS ) i t + β 3 ( INF .D ) i t + β 4 ( EMP . ) i t + β 5 ( TW ) i t + β 6 ( APP ) i t + β 7 ( SD ) i t + u i t (v)
Model: 6 ( EMP . ) i t = β 0 + β 1 ( SE ) i t + β 2 ( RE ) i t + u i t (vi)
Model: 7 ( LI ) i t = β 0 + β 1 ( SE ) i t + β 2 ( RE ) i t + u i t (vii)
Model: 8 ( CPS ) i t = β 0 + β 1 ( SP ) i t + β 2 ( SE ) i t + β 3 ( CE ) i t + β 4 ( RE ) i t + β 5 ( GD ) i t + u i t (viii)
Model: 9 ( INF .D ) i t = β 0 + β 1 ( SE ) i t + β 2 ( CE ) i t + u i t (ix)