XXXX @entity2172 and long-term follow-up of hearing.

@entity1 @entity2172 @entity697 @entity2171 @entity2346
The present material is based on a birth cohort of 2,512 @entity1 followed up from the antenatal period. Data on @entity2172 were collected until the @entity1 were 7 years. At the age of 7, audiometry was performed on 298 of them. For reasons other than @entity2172 , 32 @entity1 were excluded and the final material comprised 266 @entity1 . Only those @entity1 with clear differences in their history for @entity2346 @entity2172 were analysed. Although the pure tone averages (0.5-3 kHz) showed no major changes, different mean air-conduction (AC) thresholds were associated with different histories of @entity2346 @entity2172 . The 35 healthy @entity1 (with no @entity2346 @entity2172 episodes until 2 years of age) showed the best mean AC thresholds. The 51 @entity1 with recurrent @entity697 (RAOM; > or = 4 episodes of @entity697 ) showed worse thresholds at the high frequencies and those 13 who had had @entity2171 ( @entity2171 ) at all frequencies. The @entity1 with a history of @entity2346 @entity2172 , either RAOM or @entity2171 , more often had hearing thresholds exceeding 20 dB. Our results might indicate inner ear involvement in these long-term follow-up hearing thresholds.
