本研究以發行美國存託憑證公司(簡稱ADR公司)為樣本探討新式查核報告對美國之影響，檢驗採用新式查核報告前後期審計品質及審計公費是否有顯著改變。本研究以傾向符合分析師盈餘預測作為審計品質之代理變數，結果發現採用新式查核報告後，與傾向符合分析師盈餘預測呈顯著負相關，顯示新式查核報告的採用會使審計品質提升，另外本研究發現採用新式查核報告後，審計公費未有顯著改變。在額外分析中，本研究探討關鍵查核事項數量與審計品質及審計公費之關聯性，結果發現關鍵查核事項之數量與審計品質並無顯著關聯性，但與審計公費呈現顯著正相關。整體而言，本研究顯示新式查核報告的採用提升了審計品質但未有重大之增額成本，為跨國公司採用新式查核報告之效益及成本上提供初步的證據。

This study explores the impact of adopting the expanded audit report on audit quality and audit fee in US cross-listing firms. The result shows that audit quality improved after the adoption of expanded audit report by using the propensity to just meet or beat analyst forecasts as proxy. In addition, the study fails to find that audit fee significantly changed after adopting the expanded audit report. In the additional analyses, the empirical shows that the number of risks disclosed is no significantly associated with audit quality, but positively associated with audit fee. Taken together, the result of this study shows that expanded audit report are associated with a significant improvement in audit quality without detecting a significant increase in costs. And providing initial evidence for implementation of the expanded audit report to the cross-listing company.

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