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. 2022 Jul 30;10(8):1431. doi: 10.3390/healthcare10081431

Table 3.

Correlations and Variance Inflation Factor (VIF).

Score Big6 Commis. Size GDP p.c. HHI
Average 3.2578 0.5950 0.6386 4.7828 10.2225 118.7048
SD 1.1457 0.4912 0.4807 0.5587 0.2304 100.7908
VIF 1.24 1.10 1.14 1.42 1.44
Score 1.0000
Big6 −0.0983 * 1.0000
Commissioning 0.0458 0.2843 *** 1.0000
Size (log) −0.1868 *** 0.3453 0.1563 *** 1.0000
GDPper capita (log) −0.0180 −0.0753 * 0.0256 0.0221 1.0000
HHI (log) −0.0610 0.1444 *** 0.0657 * −0.0012 −0.5394 *** 1.0000

K-Wallis test of equality of the six Big chains. *, *** significant at 10% and 1%, respectively.