1. Protocol UK National Paediatric Bilateral Audit. Devyanee Bele 11 April 2013

2. Consortium centres Belfast Birmingham Bristol Cambridge Cardiff Great Ormond St Guy’s and St Thomas’ Manchester Middlesbrough Nottingham Oxford RNTNE Southampton St George’s

3. Who is included? All children who received bilateral CIs before the age of 18 yrs SIM (simultaneous)- children who received both CIs on the same day SEQ (sequential)- children who received 2 implants at different times

4. Timeline Data collection over the period of 3 years 2010 2011 2012 Data collected over 4 test intervals Interval0 pre CI1 yr2 yr3 yr SIMtested with hearing aids both CI SEQtested with one CI or CI & HA both CI

5. Outcome measures Three categories 1. Performance measures 2. Rating scales 3. Parental questionnaires

6. Outcome measures 1. Performance measures Soundfield thresholds Speech perception Localisation British Picture Vocabulary Scale

7. Outcome measures cont. 2. Rating Scales Speech Intelligibility Rating Categories of Auditory Perception II

8. Outcome measures cont. 3. Parental Questionnaires Parent Outcome Profile Explores issues important to parents Bilateral Listening Skills Profile Assessment of listening skills in complex environments Brief Assessment of Parental Perception Quality of life measure

9. SEQ protocol Outcome measures pre 2nd CI 1yr2 yr3 yr Soundfield thresholds√√√NA Speech perception(quiet& noise)√√√√ Localisation√√√√ Parent Outcome Profile√√√NA Bilateral Listening Skills Profile√√√√ Brief Assessment of Parental PerceptionX√√√ Speech Intelligibility Rating√√√√ Categories of Auditory Perception II√√√√ British Picture Vocabulary Scale√√√√ Stopped Dec 2011 Stopped April 2011 Stopped testing this interval Jan 2012 Started testing at this interval Jan 2012 Optional Jan 2012 Children implanted before Jan 2010 included in the audit started Oct 2011

10. SIM protocol Outcome measures pre bilat CI 1yr2 yr3 yr Soundfield thresholds√√√NA Speech perception(quiet& noise)√√√√ Localisation√√√√ Parent Outcome ProfileX√√NA Bilateral Listening Skills ProfileX√√√ Brief Assessment of Parental PerceptionX√√√ Speech Intelligibility Rating√√√√ Categories of Auditory Perception√√√√ British Picture Vocabulary Scale√√√√ Stopped Dec 2011 Stopped April 2011 Stopped testing this interval Jan 2012 Started testing at this interval Jan 2012 Optional Jan 2012 Children implanted before Jan 2010 included in the audit started Oct 2011 Continued