Research Article

Panel Unit Root Tests by Combining Dependent 𝑃 Values: A Comparative Study

Table 3

Size and power of panel unit root tests: serial correlation, intercept only, cross-section dependence driven by a common factor.

Positive serial correlationNegative serial correlation
NTP S P S

20200.2500.1160.0850.0810.2550.0970.0770.075
500.2400.1050.0630.0710.2460.0760.0440.050
1000.2240.0900.0480.0540.2370.0710.0330.048
50200.3090.1480.1260.1120.3060.0960.0900.076
500.2890.0910.0630.0680.2880.0800.0500.063
1000.2830.0870.0430.0620.2850.0760.0340.051
100200.3350.1410.1490.1140.3080.1030.1000.078
500.3170.1000.0570.0710.3010.0780.0520.056
1000.3080.0940.0420.0660.3310.0740.0370.049

20200.2560.1390.1110.1160.2600.1080.0790.082
500.2410.1040.0700.0760.2630.0910.0630.064
1000.2820.1090.0930.0820.2780.0910.0960.073
50200.3020.1410.1170.1050.3030.1140.1010.087
500.3080.1130.0720.0830.3270.0870.0640.066
1000.3540.1250.0960.0990.3680.1040.0980.081
100200.3300.1340.1390.1060.3400.1170.1200.090
500.3630.1180.0730.0880.3310.0860.0630.064
1000.3990.1330.1100.1110.3940.1000.0980.085

20200.2850.1520.1170.1170.2940.1360.0990.111
500.3830.1740.1040.1320.3930.1690.0930.136
1000.6290.3820.2210.3420.6360.3480.2000.315
50200.3510.1640.1290.1350.3380.1460.1120.124
500.4830.1900.1100.1520.4630.1840.1060.157
1000.7570.4350.2310.3670.7310.3880.2100.344
100200.3980.1750.1690.1440.3870.1530.1370.130
500.5290.1950.1080.1570.4860.1620.1000.133
1000.7810.4390.2190.3820.7400.3680.2040.336

20200.3230.1510.1280.1130.3270.1320.1100.104
500.5110.1990.1240.1460.5050.1820.1160.133
1000.8580.5050.3240.3930.8330.4640.2760.355
50200.3760.1520.1390.1160.3160.1440.1110.108
500.5980.2080.1350.1520.5720.1800.1080.130
1000.9010.4940.3000.3610.6140.1850.1170.135
100200.4150.1570.1790.1210.4130.1270.1310.093
500.6330.1850.1280.1250.6130.1850.1220.138
1000.9180.5230.3200.3920.9020.4780.2910.370

Note. See Table 1.