ADJUSTING ITEMS DISCUSSION
Adjusted Operating Income, Adjusted Operating Income Margin and Adjusted diluted EPS are non-GAAP financial measures calculated by excluding from operating revenues and operating expenses significant items that are non-operational or non-recurring in nature. Management believes that these measures provide relevant and useful information to investors and other users of our financial data in evaluating the effectiveness of our operations and underlying business trends.
Adjusted Operating Income, Adjusted Operating Income Margin and Adjusted diluted EPS should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with GAAP. Our calculations of Adjusted Operating Income and Adjusted diluted EPS, as presented, may differ from similarly titled measures reported by other companies.