[1] Univ Queensland, Sch Hlth & Rehabil Sci, Discipline Audiol, Brisbane, Qld 4072, Australia
[2] Univ Auckland, Fac Med & Hlth Sci, Sch Populat Hlth, Sect Audiol, Auckland, New Zealand
[3] Univ Auckland, Eisdell Moore Ctr, Auckland, New Zealand
[4] Univ Auckland, Fac Med & Hlth Sci, Sch Populat Hlth, Sect Epidemiol & Biostat, Auckland, New Zealand
[5] Queensland Hlth, Logan Hosp Integrated Specialist ENT Serv, Metro South Hlth Serv Dist, Brisbane, Qld, Australia