Table 1.

Ng–Perron tests for unit roots

MZαMZtMSBMPT
A) I(2) vs I(1)
ΔLY−8.808b−1.897c0.215b3.527c
ΔLK−9.064b−1.952c0.215b3.364c
ΔLN−9.176b−2.074b0.226b2.930b
ΔLH−8.347b−1.923c0.230b3.381c
ΔLFK−2.803−1.0890.3888.450
B) I(1) vs I(0)
LY−0.128−0.0760.59423.56
LK−1.669−0.6730.40311.11
LN−6.307−1.6570.2634.269
LH−2.001−0.7860.39310.19
LFK1.1040.9460.85753.94

Notes:

band cdenote significance at the 5% and 10% levels, respectively. The critical values are taken from Ng and Perron (2001) 

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