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. 2024 Feb 16;10(5):e26544. doi: 10.1016/j.heliyon.2024.e26544

Table 3.

Results for the KPSS-PUR Test (Real GDP per capita).

Panel A: Structural Breaks
Countries # of Brks Break 1 Break 2 Break 3 Break 4 Break 5 Break 6 Break 7
Belgium (BE) 6 1979 1985 1992 1996 2006 2016
Denmark (DK) 7 1984 1988 1993 1997 2002 2006 2016
France (FR) 7 1981 1985 1990 1998 2006 2010 2016
Ireland (IR) 7 1980 1985 1993 1997 2005 2009 2014
Italy (IT) 6 1978 1982 1987 1994 1999 2010
Luxembourg (LU) Reference Country
Netherlands (NL) 6 1981 1985 1990 1998 2007 2016
United Kingdom(UK) 6 1982 1986 1990 1998 2006 2016
Panel B: Optimal Frequency

Frequency Selection
Bootstrap critical values
Countries
Hypotheses
Frequency
F Statistics
10%
5%
1%
Belgium (BE) H0:ρ1 = ρ2 = 0 1 20.095*** 2.768 3.739 5.947
Denmark (DK) H0:ρ1 = ρ2 = 0 14 5.361** 2.679 3.600 5.910
France (FR) H0:ρ1 = ρ2 = 0 10 13.877*** 3.131 4.205 7.154
Ireland (IR) H0:ρ1 = ρ2 = 0 10 4.165** 2.516 3.318 5.394
Italy (IT) H0:ρ1 = ρ2 = 0 2 19.640*** 2.876 3.837 6.075
Luxembourg (LU) Reference Country
Netherlands (NL) H0:ρ1 = ρ2 = 0 10 11.260*** 2.610 3.547 5.833
United Kingdom(UK) H0:ρ1 = ρ2 = 0 8 3.300* 2.648 3.513 5.847
Panel C: Cross-sectional Dependence Test
Statistic P value
CD Test 16.565*** <0.01
Panel D: KPSS-PUR Test

Cross-section independent
Bootstrap critical values
Panel Stationary Test
Statistics
P values
10%
5%
1%
Z(λ) Homogeneous 6.274 <0.01 7.822 8.571 9.927
Z(λ) Heterogeneous 17.425 <0.01 17.945 20.704 25.962

Note: “***”, ”**”, and “*” represent 1%, 5%, and 10% significance levels, respectively. The finite sample critical values are computed using the bootstrap method, replicating samples 10,000 times. The maximal number of breaks and frequencies are fixed at 7, and 20, respectively.