1. Goman AM, Lin FR. Prevalence of hearing loss by severity in the United States. Am J Public Health. 2016; Oct. 106(10):1820–2.
Article
2. Jun HJ, Hwang SY, Lee SH, Lee JE, Song JJ, Chae S. The prevalence of hearing loss in South Korea: data from a population-based study. Laryngoscope. 2015; Mar. 125(3):690–4.
Article
3. Walker G, Dillon H, Byrne D. Sound field audiometry: recommended stimuli and procedures. Ear Hear. 1984; Jan-Feb. 5(1):13–21.
4. Oh SH, Lee J. General framework of hearing aid fitting management. J Audiol Otol. 2016; Apr. 20(1):1–7.
Article
6. Valente M, Valente M, Goebel J. Reliability and intersubject variability of the real ear unaided response. Ear Hear. 1991; Jun. 12(3):216–20.
Article
7. Valente M, Meister M, Smith P, Goebel J. Intratester test-retest reliability of insertion gain measures. Ear Hear. 1990; Jun. 11(3):181–4.
Article
8. Hawkins DB, Montgomery AA, Prosek RA, Walden BE. Examination of two issues concerning functional gain measurements. J Speech Hear Disord. 1987; Feb. 52(1):56–63.
Article
9. Cho YS. Management of hearing aids clinic. Korean J Otorhinolaryngol Head Neck Surg. 2010; 53(6):333–9.
Article
10. Humes LE, Kirn EU. The reliability of functional gain. J Speech Hear Disord. 1990; May. 55(2):193–7.
Article
11. Rochlin GD. Status of sound field audiometry among audiologists in the United States. J Am Acad Audiol. 1993; Mar. 4(2):59–68.
12. Dirks DD, Stream RW, Wilson RH. Speech audiometry: earphone and sound field. J Speech Hear Disord. 1972; May. 37(2):162–76.
Article
13. International Organization for Standardization. Acoustics: audiometric test methods. Part 2: sound field audiometry with pure-tone and narrow-band test signals (ISO 8253-2:2009). Geneva: International Organization for Standardization;2009.
14. International Organization for Standardization. Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions (ISO 389-7:2005/Amd 1:2016). Geneva: International Organization for Standardization;2016.