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. 2022 Oct 20;8(11):e11193. doi: 10.1016/j.heliyon.2022.e11193

Table 2.

Carbon dioxide emission associations.

Variables Dependent Variable: Carbon Dioxide Emission Associations
OLS Fixed Effect Random Effect Robust Fixed Effect
GDP .0214115∗∗∗ .0001136 .0009524 .0214115∗∗∗
(.0076943) (.0019855) (.0020939) (.0076043)
ITA 1.09e-07∗∗∗ 3.20e-08∗∗∗ 2.82e-08∗∗∗ 1.09e-07∗∗∗
(1.08e-08) (7.00e-09) (7.12e-09) (1.07e-08)
POP -7.91e-09∗∗∗ - 4.51e-11 -2.03e-09 -7.91e-09∗∗∗
(1.32e-09) (2.12e-09) (2.03e-09) (1.30e-09)
EC .0030129∗∗∗ .0024378∗∗∗ .0027228∗∗∗ .0030129∗∗∗
(.0000556) (.0001162) (.0000983) (.000055)
Constant -.8744887∗∗∗ -.3492584∗∗∗ -.4367587∗∗∗ -.8744887∗∗∗
(.0626703) (.0935598) (.1439436) (.0619373)
R-squared 0.9570 0.9456 0.9460
Multicollinearity 1.29
Heteroscedasticity chi2 0.7405
Normality .3082
Prob > F 0.0000 0.0000 0.0000
Prob > chi2 0.0000
Hausman Test 0.0000
Autocorrelation 0.0000
Heteroscedasticity chi2 0.0000
N 215 215 215 215

Notes: Standard errors in parenthesis. The ∗, ∗∗, and ∗∗∗ represent 10%, 5% and 1% of significance level, respectively or ∗∗∗p < .01, ∗∗p < .05, ∗p < .1: GDP is GDP per capita growth (annual %), lnITA is International tourism, number of arrivals, POP is Population (total population) and EC is Energy use (kg of oil equivalent per capita).