Speech sound disorders - Overview - RCSLT.
Quick Statistics About Voice, Speech, Language Voice, Speech, Language, and Swallowing. Nearly 1 in 12 (7.7 percent) U.S. children ages 3-17 has had a disorder related. Voice. An estimated 17.9 million U.S. adults ages 18 or older, or 7.6%, report having had a problem with their voice in.
out of 5.