Table 2. The balanced baseline of the partial-thickness tragal cartilage and full-thickness tragal cartilage groups
Variables Variables PTTC FTTC Z or χ2 P
Mean ABG before surgery Mean ABG before surgery 17.5(12.5~22.5) 18.75(13.75~25) -.996 .319
Age Age 45(35.25~54) 48(34~58)
Gender Male(%) 45(35.7) 40(36) .003 .959
Female(%) 81(64.3) 71(64)
Perforation size ≥50% (%) 90(71.4) 89(80.2) 2.445 .118
<50% (%) 36(28.6) 22(19.8)
Malleus Exposed 43(34.1) 46(41.4) 1.346 .246
Unexposed 83(65.9) 65(58.6)
BS_ABG250 BS_ABG250 27.5(20~35) 30(25~35) -1.276 .202
BS_ABG500 BS_ABG500 22.5(15~30) 25(20~30) -1.531 .126
BS_ABG1000 BS_ABG1000 15(10~25) 20(10~25) -.231 .817
BS_ABG2000 BS_ABG2000 10(8.75~15) 10(10~20) -.888 .375
BS_ABG4000 BS_ABG4000 15(10~25) 15(10~25) -.599 .549