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The Egyptian Journal of Otolaryngology

Table 3 ABG range in strata of 10dB (n=42)

From: Correlation of intraoperative middle ear status and hearing results in single-stage canal wall down tympanomastoidectomy with PORP—a prospective study

ABG range

Pre-operative (%)

Post-operative (%)

P value

≤10dB

5 (11.9)

9 (21.4)

0.569

11–20 dB

10 (23.8)

13 (30.95)

0.575

21–30 dB

15 (35.7)

11 (26.19)

0.99

>30 dB

12 (28.57)

9 (21.42)

0.56

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