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. Author manuscript; available in PMC: 2006 May 19.
Published in final edited form as: Otol Neurotol. 2003 Mar;24(2):165–175. doi: 10.1097/00129492-200303000-00008

TABLE 1.

Air-bone gaps prior to exploratory tympanotomy

250 Hz 500 Hz 1,000 Hz 2,000 Hz 4,000 Hz 4-tone averagea
N 13 17 17 17 17 17
Mean 46.2 34.1 29.4 15.9 26.5 26.5
Standard error 4.9 3.2 4.0 4.4 4.7 3.6
a

Average of 500, 1,000, 2,000, and 4,000 Hz values