Fig 2. Association between attention (D-CAT1) and anesthesia (sevoflurane) in the patient group.

Residual plots with trend lines depicting the correlations between residuals in the multiple regression analyses, using the change ratio of D-CAT1 scores as the dependent variable, and the total dose of sevoflurane and other confounding factors as independent variables. Two patients who did not receive post-operative examination and 2 patients who were assigned as outliers of the sevoflurane dose were removed from the analysis. Therefore the data from 28 patients were analyzed. Abbreviations: D-CAT, digit cancellation task.