Fig. 1.  Standardized coefficients of the seven-factor model of the Patient Satisfaction with Perioperative Anesthesia Care questionnaire in group 2 patients (n = 565). Squares indicate observed items; ovals, latent constructs; values behind rectangles, variance of error terms; values on the arrows, path coefficients; values on the double arrows, correlations. The number of observed items in this model coincided with table 2of the exploratory factor analysis.