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. Author manuscript; available in PMC: 2009 Jun 9.
Published in final edited form as: Ear Hear. 2008 Aug;29(4):512–523. doi: 10.1097/AUD.0b013e31816c40bb

Fig. 4.

Fig. 4

(a) Mean DPOAE level as a function of age for 261 infants comprising group 1: cross-sectional database; (b) DP-gram (DPOAE level × f2) for the same 261 infants in five age categories. SDs were not included in these figures because their presence makes it difficult to view and interpret the data. However, all means and SDs are provided in Table 2.