Further analysis shows the variation in the coefficients of these four variables over the 2 years to be small,
which indicates the stability of their relationship with audit fees. We also find a strong relationship between
firm complexity and audit fees, with the coefficient of Subs_rt statistically and economically significant at the
1% level. However, the regression results on the relationship between Segment and Lnfee show an inconsistency
between 2007 and 2008. The coefficient of Segment is insignificant in 2007 and significant at the 1% level
in 2008. Empirical results also show the ratios of accounts receivable to total assets and inventory to total
assets to be economically and statistically associated with audit fees at a significant level. The coefficient of
Recint is significant at the 10% level (two-sided) in 2007 and 2008 (one-sided), whereas that of Invint is significant
at the 10% level (one-sided) in 2007 and at the 5% level (two-sided) in 2008. This evidence is inconsistent
with the results of Liu et al. (2003) and Zhu and Guo (2006) and with those of Wu (2003), who reports a significant
positive relationship between accounts receivable (and inventory) and audit fees. In our results, the
sign of Invint is negative. Common sense suggests that the larger a company’s inventory, the greater the audit
risk and the higher the audit cost. Hence, the relationship between inventory and audit fees should be positive.
The cause of the adverse result reported herein is left for future research. One possibility is that the assessed
audit risk of inventory is low, thus prompting a simplified audit procedure.
Further analysis shows the variation in the coefficients of these four variables over the 2 years to be small,
which indicates the stability of their relationship with audit fees. We also find a strong relationship between
firm complexity and audit fees, with the coefficient of Subs_rt statistically and economically significant at the
1% level. However, the regression results on the relationship between Segment and Lnfee show an inconsistency
between 2007 and 2008. The coefficient of Segment is insignificant in 2007 and significant at the 1% level
in 2008. Empirical results also show the ratios of accounts receivable to total assets and inventory to total
assets to be economically and statistically associated with audit fees at a significant level. The coefficient of
Recint is significant at the 10% level (two-sided) in 2007 and 2008 (one-sided), whereas that of Invint is significant
at the 10% level (one-sided) in 2007 and at the 5% level (two-sided) in 2008. This evidence is inconsistent
with the results of Liu et al. (2003) and Zhu and Guo (2006) and with those of Wu (2003), who reports a significant
positive relationship between accounts receivable (and inventory) and audit fees. In our results, the
sign of Invint is negative. Common sense suggests that the larger a company’s inventory, the greater the audit
risk and the higher the audit cost. Hence, the relationship between inventory and audit fees should be positive.
The cause of the adverse result reported herein is left for future research. One possibility is that the assessed
audit risk of inventory is low, thus prompting a simplified audit procedure.
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