Subject: Re: Hearing Loss "False Positives" From: "reinifrosch@xxxxxxxx" <reinifrosch@xxxxxxxx> Date: Thu, 23 Sep 2010 21:00:22 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>------=_Part_4976_10194108.1285275622618 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Jeffrey, In the link, it says "10 percent of the 14.9 percent figure"; admittedly, t= hat can be interpreted in two ways. I still tend to favor mine; but even 4.= 9 percent would be worrying. Anecdotally, one of my grandsons did damage hi= s outer hair cells by a loud noise, namely by that of a fire cracker. Loud = music is dangerous too, I think. Reinhart. =20 Reinhart Frosch, CH-5200 Brugg. reinifrosch@xxxxxxxx . ----Urspr=C3=BCngliche Nachricht---- Von: willsonj@xxxxxxxx Datum: 23.09.2010 21:01 An: <reinifrosch@xxxxxxxx> Kopie: <AUDITORY@xxxxxxxx> Betreff: Re: Hearing Loss "False Positives" I think you're misreading this. The paper says that a reasonable statistic= al model reveals that the method used in previous studies will find roughly= 10% of children with normal hearing to have a measured hearing loss that i= sn't real. You subtract that from the 14.9% figure and you get less than 5= % of children with high-frequency hearing loss, and probably the majority o= f these are from causes other than loud noises. =20 On Thu, Sep 23, 2010 at 7:58 AM, reinifrosch@xxxxxxxx<reinifrosch@xxxxxxxx= .ch> wrote: Dear Kevin,=20 >From a non-professional: 10 percent of 14.9 percent is about 1.5 percent; t= hat leaves 13.4 percent of teenagers with hearing loss, which is still frig= htening. From "Molecular Biology of the Cell", Part V, Chapter 22: "Auditor= y Hair Cells Have to Last a Lifetime". Reinhart.=20 Reinhart Frosch, Dr. phil. nat., r. PSI and ETH Zurich, Sommerhaldenstr. 5B, CH-5200 Brugg. Phone: 0041 56 441 77 72. Mobile: 0041 79 754 30 32. E-mail: reinifrosch@xxxxxxxx . ----Urspr=C3=BCngliche Nachricht---- Von: kevin.austin@xxxxxxxx Datum: 21.09.2010 23:41 An: <AUDITORY@xxxxxxxx> Betreff: Hearing Loss "False Positives" Would anyone in the professional community care to comment on this? Begin forwarded message: A new study from the University of Minnesota says that we're overestimating= the amount of teens with hearing loss.=20 http://www1.umn.edu/news/news-releases/2010/UR_CONTENT_254452.html Thanks in advance. Kevin ------=_Part_4976_10194108.1285275622618 Content-Type: text/html;charset="UTF-8" Content-Transfer-Encoding: quoted-printable <html><head><style type=3D'text/css'> <!-- div.bwmail { background-color:#ffffff; font-family: Trebuchet MS,Arial,Helv= etica; font-size: 12px; margin:0; padding:0;} div.bwmail p { margin:0; padding:0; } div.bwmail table { font-family: Trebuchet MS,Arial,Helvetica; font-size: 12= px; } div.bwmail li { margin:0; padding:0; } --> </style> </head><body><div class=3D'bwmail'><P>Jeffrey,</P> <P>In the link, it says "10 percent of the 14.9 percent figure"; admittedly= , that can be interpreted in two ways. I still tend to favor mine; but even= 4.9 percent would be worrying. Anecdotally, one of my grandsons did damage= his outer hair cells by a loud noise, namely by that of a fire cracker. Lo= ud music is dangerous too, I think.</P> <P>Reinhart. <BR><BR>Reinhart Frosch,<BR>CH-5200 Brugg.<BR><A hr= ef=3D"mailto:reinifrosch@xxxxxxxx">reinifrosch@xxxxxxxx</A> .<BR><BR><B= R><BR>----Urspr=C3=BCngliche Nachricht----<BR>Von: willsonj@xxxxxxxx<BR>= Datum: 23.09.2010 21:01<BR>An: <reinifrosch@xxxxxxxx><BR>Kopie: <= ;AUDITORY@xxxxxxxx><BR>Betreff: Re: Hearing Loss "False Positives= "<BR><BR>I think you're misreading this. The paper says that a reason= able statistical model reveals that the method used in previous studies wil= l find roughly 10% of children with normal hearing to have a measured heari= ng loss that isn't real. You subtract that from the 14.9% figure and = you get less than 5% of children with high-frequency hearing loss, and prob= ably the majority of these are from causes other than loud noises. <B= R><BR></P> <DIV class=3Dgmail_quote>On Thu, Sep 23, 2010 at 7:58 AM, <A href=3D"mailto= :reinifrosch@xxxxxxxx">reinifrosch@xxxxxxxx</A><SPAN dir=3Dltr><<A h= ref=3D"mailto:reinifrosch@xxxxxxxx">reinifrosch@xxxxxxxx</A>></SPAN>= wrote:<BR> <BLOCKQUOTE class=3Dgmail_quote style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px= 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"> <DIV> <DIV> <P>Dear Kevin, </P> <P>From a non-professional: 10 percent of 14.9 percent is about 1.5 percent= ; that leaves 13.4 percent of teenagers with hearing loss, which is still f= rightening. From "Molecular Biology of the Cell", Part V, Chapter 22: "Audi= tory Hair Cells Have to Last a Lifetime".</P> <P>Reinhart. <BR><BR>Reinhart Frosch,<BR>Dr. phil. nat.,<BR>r. PSI and= ETH Zurich,<BR>Sommerhaldenstr. 5B,<BR>CH-5200 Brugg.<BR>Phone: 0041 56 44= 1 77 72.<BR>Mobile: 0041 79 754 30 32.<BR>E-mail: <A href=3D"mailto:reinifr= osch@xxxxxxxx" target=3D_blank>reinifrosch@xxxxxxxx</A> .<BR><BR>----Ur= spr=C3=BCngliche Nachricht----<BR>Von: <A href=3D"mailto:kevin.austin@xxxxxxxx= TRON.CA" target=3D_blank>kevin.austin@xxxxxxxx</A><BR>Datum: 21.09.2010= 23:41<BR>An: <<A href=3D"mailto:AUDITORY@xxxxxxxx" target=3D_bla= nk>AUDITORY@xxxxxxxx</A>><BR>Betreff: Hearing Loss "False Positiv= es"<BR></P> <DIV> <DIV></DIV> <DIV class=3Dh5> <DIV> </DIV>Would anyone in the professional community care to comment= on this?<BR> <DIV> <DIV>Begin forwarded message:</DIV> <DIV>A new study from the University of Minnesota says that we're overestim= ating the amount of teens with hearing loss. <BR><A href=3D"http://www= 1.umn.edu/news/news-releases/2010/UR_CONTENT_254452.html" target=3D_blank>h= ttp://www1.umn.edu/news/news-releases/2010/UR_CONTENT_254452.html</A></DIV>= </DIV> <DIV>Thanks in advance.</DIV> <DIV>Kevin<BR></DIV></DIV></DIV></DIV></DIV></BLOCKQUOTE></DIV><BR><BR><BR>= </div></body></html> ------=_Part_4976_10194108.1285275622618--