Table 5.

Projected Numbers of Cases (in Millions) of Hearing Impairment by the Year 2030 in Models Accounting and Not Accounting for the Birth Cohort Effect^a

Age Group, years	Not Accounting for BCE	Accounting for BCE
45–54
Projected population, millions	44.0	44.0
Projected no. of cases, millions	5.4	2.7
Projected prevalence, %	12.2	6.1
55–64
Projected population, millions	40.3	40.3
Projected no. of cases, millions	11.9	7.1
Projected prevalence, %	29.6	17.7
65–74
Projected population, millions	38.8	38.8
Projected no. of cases, millions	20.3	15.1
Projected prevalence, %	52.2	39.0
75–84
Projected population, millions	24.6	24.6
Projected no. of cases, millions	19.7	17.8
Projected prevalence, %	80.0	72.3
≥85
Projected population, millions	8.5	8.5
Projected no. of cases, millions	8.3	8.2
Projected prevalence, %	97.3	96.2
Total
Projected population, millions	156.2	156.2
Projected no. of cases, millions	65.5	50.9
Projected prevalence, %	41.9	32.6

Abbreviation: BCE, birth cohort effect.

^aBased on US Census data (15).