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Table 3 Principal component analysis factor loadings for alcohol problem severity

From: Preliminary study of alcohol problem severity and response to brief intervention

Variable Alcohol problem severity factor
Penn Alcohol Craving Scale total 0.71
DSM-5 SCID AUD symptom count 0.85
Alcohol Use Disorders Identification Test total 0.82
Patient Health Questionnaire-9 total 0.90
Generalized Anxiety Disorder 7-Item Scale total 0.82
  1. Principal component analysis yielded one factor with all variables loading > 0.40 that explained 68% of the total variance (Eigenvalue = 3.387)