The factor extraction process shows that support explains 45.8%
of the total variance of the observed variables and infrastructure
15.5%. The two components together account for 61.3% of the initial
variance. The KMO measure verified the sampling adequacy
for the analysis, KMO = 0.76. Bartlett’s test of sphericity v2
(36) = 190.35, p < 0.001, indicated that correlations between items
were sufficiently large for PCA.