[Gretl-devel] adf and restricted samples

Is it correct that ADF always uses the whole range instead of the current sample? ? adf 8 log(salarios) --ct including 8 lags of (1-L)l_salarios sample size 19 unit-root null hypothesis: a = 1 model: (1-L)y = b0 + b1*t + (a-1)*y(-1) + ... + e 1st-order autocorrelation coeff. for e: 0,179 lagged differences: F(8, 8) = 4,559 [0,0231] estimated value of (a - 1): -0,979101 test statistic: tau_ct(1) = -5,3047 asymptotic p-value 4,382e-005 Full data range: 2002:1 - 2008:4 (n = 28) Full data range: 2002:1 - 2008:4 (n = 28) Current sample: 2004:1 - 2008:4 (n = 20) including 8 lags of (1-L)l_salarios sample size 19 unit-root null hypothesis: a = 1 model: (1-L)y = b0 + b1*t + (a-1)*y(-1) + ... + e 1st-order autocorrelation coeff. for e: 0,179 lagged differences: F(8, 8) = 4,559 [0,0231] estimated value of (a - 1): -0,979101 test statistic: tau_ct(1) = -5,3047 asymptotic p-value 4,382e-005 Thanks!