Fig. 1From: Validation of a Spanish version of the health-related quality of life (HRQoL) measure for Chronic Otitis Media (COMQ-12)Exploratory factor analysis path (Model A). Variables are represented as rectangles, latent variables (factors) as ellipses and loading onto marker variables (COMQ-12 question items) as arrows. The error terms for the observable variables are shown as a circle plus arrow for each factor. Model A showed a two-factor structure and was obtained from an initial EFABack to article page