The Influence of Digital Transformation of Foreign Trade Enterprises on Their Business Performance

Table 3

Unit root test.

Variables	LLC	Breitung	Hadri	IPS	ADF	PP	Result
MRS	−6.8911	−4.1823	8.1873	−1.8303	66.4594	92.4473	Stable
DT	−8.7927	3.1770	3.5078	−2.3134	66.2864	64.9830	Stable
Asset	−10.3725	1.7967	8.0514	−3.0375	88.9400	113.485	Stable
Dual	−1.4243	−0.6146	1.8211	−0.4256	9.3725	9.4450	Stable
S-D	−39.2264	1.2365	9.2020	−5.4134	47.2748	57.0566	Stable
Age	−5.2236	−2.2110	5.7021	−1.6682	23.7799	29.3858	Stable
TR	−1.5772	1.3247	10.9898	−2.7220	28.7512	41.4019	Stable
Income	−10.0001	−0.2054	9.5674	−2.5121	123.8333	117.5244	Stable
Audit	−40.5094	0.4035	9.4227	−8.6567	−8.6567	69.6451	Stable