Mike Hughes
Ethnicity corrections in pulmonary function test reports: what to do?
The European respiratory journal
pediatric cochlear implant ci users ci processor technology map characteristics fitting strategies known substantial impact speech perception scores young ages unknown whether benefits continue time children reach adolescence document changes ci technology map characteristics speech perception scores children elementary grades high school describe relations map characteristics speech perception scores time longitudinal design participants 89yrold session 1 1518yrold session 2 participants 82 adolescents unilateral cis subset larger longitudinal study mean age implantation 34 yr range 1754 mean duration device use 55 yr range 3875 session 1 133 yr range 10915 session 2 speech perception tests sessions 1 2 lexical neighborhood test lnt presented 70 db spl lnt70 bamfordkowalbench sentences quiet bkbq presented 70 db spl session 2 lnt also administered 50 db spl lnt50 bkb sentences administered noise 10 db snr bkbn ci processor technology type ci map characteristics coding strategy number electrodes threshold levels comfort levels obtained sessions electrical dynamic range computed descriptive statistics correlations repeatedmeasures anovas employed participants achieved significantly higher lnt bkb scores 70 db spl ages 1518 ages 89 yr fortytwo participants 13 electrodes either activated deactivated map test sessions 40 change number active electrodes mean change 05 range 3 2 conversion arbitrary clinical map units chargeperphase nanocoulombs nc significant difference found levels across time average comfort levels c levels decreased 19 nc seventythree participants 89 upgraded ci processor technology type sessions significant correlations found electrical dynamic range edr speech perception measures except lnt50 r range 31 47 p 001 similarly significant correlations also found c levels speech perception measures r range 29 49 p 001 session 2 significant correlation found processor technology type lnt50 scores r 38 p 001 significant improvement speech scores observed elementary grades high school children used ci since preschool average levels nc electrode function remained stable longterm pediatric users analyses maps allow determination exact cause c level reductions though power limitations new processor systems changes perceived loudness time possible larger edrs higher c levels associated better speech scores newer speech processor technology associated better speech scores softer level