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Table 1 Factor loadings, eigenvalues and explained variance of principal components

From: Evaluation of drinking patterns and their impact on alcohol-related aggression: a national survey of adolescent behaviours

  I component II component III component
(Drinking to excess) (Drinking with intoxication) (Drinking but not to excess)
Frequency of alcohol use 0.582 −0.538 0.610
Frequency of perceived intoxication 0.540 0.816 0.205
Frequency of binge drinking 0.608 −0.210 −0.766
Eigenvalue 1.97 0.61 0.42
Explained variance 65% 21% 14%