Panel A: Auditor gender and disclosure characteristics of key audit matters

Female auditor (1)

N = 2212

Male auditor (2)

N = 3443

(1) vs (2)

Mean

Mean

Mean difference

Kam_num

2.075

2.119

−0.044**

Length_sum

1194.339

1205.637

−11.298

Length_unit

580.229

569.432

10.797***

Specificity1_sum

102.876

102.201

0.675

Specificity1_unit

49.582

48.101

1.481***

Specificity2_sum

0.182

0.183

−0.001

Specificity2_unit

0.087

0.086

0.001

Ind spec_sum

0.880

0.881

−0.001

Panel B: Tenure of auditor^b and disclosure characteristics of key audit matters

Short audit tenure (1)

N = 2830

Long audit tenure (2)

N = 2825

(1) vs (2)

Mean

Mean

Mean difference

Kam_num

2.108

2.095

0.013

Length_sum

1226.423

1175.968

50.455***

Length_unit

583.080

564.214

18.866***

Specificity1_sum

104.852

100.075

4.777***

Specificity1_unit

49.578

47.781

1.797***

Specificity2_sum

0.183

0.182

0.001

Specificity2_unit

0.086

0.086

0.000

Ind spec_sum

0.894

0.867

0.027

Panel C: Industry expertise of auditor and disclosure characteristics of key audit matters

No industry expertise (1)

N = 2576

Industry expertise (2)

N = 3079

(1) vs (2)

Mean

Mean

Mean difference

Kam_num

2.026

2.165

−0.139***

Length_sum

1148.694

1245.160

−96.466***

Length_unit

568.852

577.674

−8.822**

Specificity1_sum

96.455

107.494

−11.039***

Specificity1_unit

47.409

49.744

−2.336***