Abstract:
The main objective of this thesis is to study the relationship between earning quality and auditor's reports. In this study, earning quality consists of (1) accruals (2) operating cash index and (3) cash flow adequacy. The samples include all Thai listed companies for the periods of 2003-2005, excluding commercial banking, finance and securities, and insurance business. Not only descriptive statistics (frequency, percentage, minimum, maximum and mean) but also inferential statistics (logistic regression analysis) are used to analyze the relationship between earning quality and auditor's reports. At 95% confidence interval, (1) the greater the accruals, the higher probability that the auditors are more likely to issue modified reports (2) the greater the operating cash index, the lower probability that the auditors are more likely to issue modified reports. This study has also attempted to minimize the risk by controlling other factors that could be correlated with modified reports. The study finds the relationship between modified reports and the controls variables which are consistent with prior studies. The likelihood of the modified reports decreases when (1) the greater liquidity ratios, and (2) the greater profitability ratios. However, the likelihood of modified reports increases when the companies have been audited by Big-4.