"Deaf mainstream" vs "Deaf" is hard to find. But "Not able to hear" vs "Able to hear":
2 to 1
Here's a start..
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Blanchfield BB, Feldman JJ, Dunbar JL, Gardner EN. 2001.
• Of the U.S. population, 18.7% did not graduate from high school
. . . . . . . in contrast to 44.4% of individuals with a severe to profound hearing loss.
• 18- to 44-year-old age group – hearing population – 82% were in the labor force,
. . . persons with a severe to profound hearing loss - 58% were in the labor force
• 45- to 64-year-old age group – hearing population 73% of the hearing population was in the labor force,
. . . . . . . . . . deaf and hard of hearing population - 46% were in the labor force
• College graduation - 12.8% of the hearing population graduated from college
. . . . . . . . . whereas 5.1% of the deaf or hard-of-hearing population graduated.
• Post-college education—9.2% of the hearing population had some post-college education with
. . . . . . . . . . . . . . only 4.8% of the deaf or hard-of-hearing population having any post-college education
• Family income comparisons for the U.S. population and population of severely to profoundly deaf or hard-of-hearing individuals.
- Hearing families - 26% earned between $10,000 and $24,999 annually,deaf or hardof-hearing families -
. . . . . . . . . . . . 28% earned incomes in the same range.
- Hearing families- 29% earned $50,000 or more, deaf or hard-of-hearing families -
. . . . . . . . . . . . 14% had incomes in the same range.
SOURCE: Blanchfield BB, Feldman JJ, Dunbar JL, Gardner EN. The severely to profoundly hearing impaired population in the United States: Prevalence estimates and demographics. Journal of the American Academy of Audiology 2001;12:183-189.
This study informs policy makers and third-party payers of the prevalence and characteristics of the severely to profoundly hearing-impaired population in the United States. Nationally representative data were used for estimations in consultation with an expert advisory panel. The prevalence of severe to profound hearing impairment among the US population ranges from 464,000 to 738,000, with 54 percent of this population over age 65 years. Persons with hearing impairment are more likely to be publicly insured, less likely to have private insurance, have lower family incomes, are less educated, and are more likely to be unemployed than the general population. Approximately half a million Americans are severely to profoundly hearing impaired and appear to be more vulnerable, both financially and educationally, as compared to the US population. As a result, access to medical and technological interventions that may assist their hearing loss may be limited.