The aim of this paper is to analyze the Spanish market reactions arising from the formation of the audit committees in the listed companies. This reaction could reasonably differ from that observed in Anglo-Saxon markets given the peculiarities of the audit process in Spain. With this aim, using the event study methodology, we have measured the abnormal returns surrounding the constitution of the audit committee, taking into account factors such as its voluntary formation, the auditor?s previous opinion and the auditor?s firm size. Our results confirm the existence of negative market reactions in the case of a voluntary formation of the committee and when this formation corresponds to a firm that has received a favourable audit report. However, we have observed no significant market reactions when the firm has received a qualified opinion and these reactions did not differ when the company was audited by one of the big audit firms or by other auditor.
This research work is aimed at determining the effectiveness of the Audit Committee (AC), analyzing its impact on the reliability of accounting information issued by spanish listed companies. With this aim, we study whether certain features such as its voluntary or otherwise compulsory formation, its independence and activity lead to an improvement of financial reporting quality, which is defined as the removal of avoidable qualifications in the audit report. We considered the periods where ACs were voluntary (1998–2002) and compulsory (2003 onwards). The results obtained suggest that: (a) compulsory ACs are more effective than voluntary ones; (b) ACs with a higher proportion of independent members do not lead to greater improvements in the quality of accounting information; and (c) the number of meetings of the AC is directly related to improvements in the quality of accounting information.
Evaluation of ventricular performance is essential in the diagnosis and long-term management of patients with heart disease. This can be most easily performed clinically using simple tools. When more definitive objective assessment of cardiac function is indicated, the equilibrium gated blood pool study provides reliable angiographic evaluation of the heart. It will continue as a mainstay in the armamentarium of cardiology.