Surrogates for Audit Fees in Concentration Studies.
利用英国审计费用数据，评估了审计数量、客户销售额及客户销售额平方根作为审计费用替代指标在集中度研究中的有效性，发现后两者分别高估和低估了基于审计费用的集中度，可作为上下界。
Abstract This study uses U.K. audit fee data to evaluate the usefulness of three possible surrogates for audit fees in studies of market concentration (number of audits, client sales and the square root of client sales). No single best measure emerges but concentration measures based upon client sales and the square root of client sales are found to provide consistent overestimates and underestimates respectively of concentration measures based upon audit fees, and thus represent upper and lower bounds for market concentration in auditing. This result should be of use to researchers in countries where audit fee data is not available.