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‘Big 4’ influence on audit market

   | Nov 09, 2020

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Fig. 1

The trend of Big 4 companies charged by the listed companies on BVB during the period 2011–2019.
The trend of Big 4 companies charged by the listed companies on BVB during the period 2011–2019.

The percentage of the companies audited by Big 4/Non-Big 4 during the period 2011–2019

Auditor type201120122013201420152016201720182019
Non Big 416%28%16%24%16%16%20%20%28%
Big 484%72%84%76%74%74%80%80%72%

ANOVA analysis of the shareholders’ funds of the listed companies on BVB (premium shares) during the period 2011–2019

ANOVAF testP-valueMSBMSW
10.480.0112.4213.44

Descriptive statistics of the number of employees of the listed companies on BVB (premium shares) during the period 2011–2019

NMeanStd. deviationStd. error95% Confidence interval for meanMinMax
Lower boundUpper bound
Non-Big 4363.113.112.342.933.241.863.85
Big41073.653.702.693.543.741.324.38
Total1433.563.672.593.463.651.324.38

ANOVA analysis of the number of employees of the listed companies on BVB (premium shares) during the period 2011–2019

ANOVAF testP-valueMSBMSW
13.810.008.437.29

ANOVA analysis of the number of companies in business group of the listed companies on BVB durin the period 2011–2019

ANOVAF testP-valueMSBMSW
4.670.035.214.54

Descriptive statistics of the variable profit/loss of the listed companies on BVB during the period 2011–2019

NMeanStd. deviationStd. error95% Confidence interval for meanMinMax
Lower boundUpper bound
Non-Big 4457.347.486.657.117.497.358.06
Big 41358.108.407.337.938.238.219.17
Total1808.008.347.227.838.128.219.17

ANOVA analysis of the profit/loss of the listed companies on BVB (premium shares) during the period 2011–2019

ANOVAF testP-valueMSBMSW
7.890.0616.6817.57

Descriptive statistics of the variable profit margin of the listed companies on BVB during the period 2011–2019

NMean (%)Std. deviationStd. error of profit margin95% Confidence interval for meanMinMax
Lower boundUpper bound
Non-Big 4411.291.200.391.161.390.751.93
Big 41151.141.390.360.961.261.911.89
Total1561.181.360.261.071.271.911.93

Descriptive statistics of the variable shareholders’ funds of the listed companies on BVB (premium shares) during the period 2011–2019

NMeanStd. deviationStd. Error of shareholders’ funds95% Confidence interval for meanMinMax
Lower boundUpper bound
Non-Big 4455.655.875.045.355.834.176.56
Big 41356.136.265.206.026.224.136.91
Total1806.056.225.095.956.144.136.91

ANOVA analysis of the profit margin of the listed companies on BVB (premium shares) during the period 2011–2019

ANOVAF testP-valueMSBMSW
1.920.162.992.71

Descriptive statistics of the number of companies in the business group for the listed companies on BVB (premium shares) during the period 2011–2019

NMeanStd. deviationStd. Error of the number of companies in corporate group95% Confidence interval for meanMinMax
Lower boundUpper bound
Non-Big 4481.161.080.241.041.250.301.66
Big41501.912.331.241.672.060.482.96
Total1981.812.271.131.591.960.302.96
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