Upon correlating the postoperative ABG gains in the different types of tympanoplasty, a distinct trend toward significance was shown at 2000 Hz ( P = 0.07), and a borderline significant trend was shown at 1000 ( P = 0.13).
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Surgical results of retrograde mastoidectomy with primary reconstruction of the ear canal and mastoid cavity.
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0.0700
0.1300
The sentences
a borderline significant trendP = 0.13
However, a statistically significant difference was observed at 2000 Hz ( P = 0.03) and a borderline significant trend was found at 250 ( P = 0.13), 500 ( P = 0.11), and 1000 Hz ( P = 0.08), respectively.