Randomized Clinical Trial Comparing Bucket Handle and Cartilage Tympanoplasty Techniques for the Reconstruction of Subtotal or Anterior Tympanic Membrane Perforation

Table 2

The change in PTA, SRT, and SDS parameter in both groups within the follow-up time.

Item	Cartilage Tympanoplasty	Bucket Handle Tympanoplasty
PTA	Mean ± standard deviation	Mean ± standard deviation
Before surgery	28.92 ± 7.47 dB HL	30.08 ± 11.69 dB HL
3 months after surgery	19.17 ± 4.66 dB HL	17.17 ± 7.98 dB HL
6 months after surgery	18.83 ± 3.87 dB HL	16.92 ± 6.48 dB HL
12 months after surgery	18.67 ± 3.90 dB HL	17.25 ± 6.76 dB HL
SRT	Mean ± standard deviation	Mean ± standard deviation
Before surgery	31.33 ± 7.30 dB HL	32.67 ± 9.80 dB HL
3 months after surgery	23.67 ± 5.07 dB HL	21.33 ± 6.81 dB HL
6 months after surgery	23.33 ± 3.56 dB HL	21.00 ± 5.93 dB HL
12 months after surgery	23.33 ± 3.56 dB HL	21.00 ± 5.93 dB HL
SDS	Mean ± standard deviation	Mean ± standard deviation
Before surgery	98.53 ± 2.40%	96.27 ± 2.70%
3 months after surgery	98.67 ± 2.43%	96.80 ± 3.99%
6 months after surgery	98.67 ± 2.43%	96.80 ± 3.99%
12 months after surgery	98.67 ± 2.43%	96.80 ± 3.99%