Mitchell, R. E., & Karchmer, M. A. (2004). Chasing the Mythical Ten Percent: Parental Hearing Status of Deaf and Hard of Hearing Students in the United States. Sign Language Studies, 4(2), 138–163.
 Gilkerson, J., Richards, J.A., Warren, S. R., Oller, D. K., Russo, R., and Vohr, B. (2018) Language experience in the second year of life predicts language outcomes in late childhood. Pediatrics, 142(40). doi: 10.1542/peds.2017-4276
 Rufsvold, R., Wang, Y., Hartman, M. C., Arora, S. B., & Smolen, E. R. (2018). The impact of language input on deaf and hard of hearing preschool children who use listening and spoken language. American Annals of the Deaf, 163(1), 35–60
 BEGINNINGS for Parents of Children Who Are Deaf or Hard of Hearing, Inc., Raleigh, NC, data report (2022). www.ncbegin.org
 Ward, A. C. Hunting, V. & Behl, D. D. (2019). Supporting Families of a Deaf or Hard of Hearing Child: Key Findings from a National Needs Assessment. Journal of Early Hearing Detection and Intervention, 4(3). DOI: https://doi.org/10.26077/5f99-5346
 Behl, D., Mariger, H., Doutre, S.M., Plucinik, J., and White, K.R. (2017). National Center for Hearing Assessment and Management. Final Report. < a style="color:#f47b6a;" href="https://www.infanthearing.org/ei-snapshot/docs/2021%20EI%20Snapshot%20double(3_29).pdf">https://www.infanthearing.org/ei-snapshot/docs/2021%20EI%20Snapshot%20double(3_29).pdf
 Based on calculations performed by NIDCD Epidemiology and Statistics Program staff: (1) using data from the 1999-2010 National Health and Nutrition Examination Survey (NHANES)
 Blackwell DL, Lucas JW, Clarke TC. Summary health statistics for U.S. adults: National Health Interview Survey, 2012 (PDF). National Center for Health Statistics. Vital Health Stat 10(260). 2014).
 Based on calculations by NIDCD Epidemiology and Statistics Program staff
 (Estimates based on manufacturers’ voluntary reports of registered devices to the U.S. Food and Drug Administration, December 2019)