That is not a p value, it is relative risk factor. The annual rate of infection with Type A or Type B flu is about 2.7%. If you get vaccinated that drops to about 1.2%. Ignored here is the possibility that there may be pre-existing differences between those that get the shot and those who don't. Bottom line, you probably will not get the A/B flu whether or not you get the shot, but getting the shot lowers the (small) risk a lot. Given that some types of folks die from the flu, you should get the shot, IMHO, if for no other reason that reducing the risk that you will spread it to a vulnerable person. Of course, there are a lot of illnesses that mimic the symptoms of A/B flu, so don't be surprised if you get sick even after having the shot.
Cheers, [Karl L. Wuensch]<http://core.ecu.edu/psyc/wuenschk/klw.htm> ----- Original Message ----- From: michael sylvester<mailto:msylves...@copper.net> To: Teaching in the Psychological Sciences (TIPS)<mailto:t...@acsun.frostburg.edu> Sent: Tuesday, January 15, 2013 8:16 AM Subject: Flu vaccine and p.6 level of significance In psychological science we require at least a p.05 or better to come to reliable conclusions about the impact of the IV on the DV. But the flu vaccine only has a p.6 (62%) effectiveness, so why are we recommending that everyone get a flu shot. With such a low level of significance,could this be the quintessential 'placebo effect' paradigm? Any MD on Tips except for Beth's husband? michael --- You are currently subscribed to tips as: wuens...@ecu.edu<mailto:wuens...@ecu.edu>. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13060.c78b93d4d09ef6235e9d494b3534420e&n=T&l=tips&o=23016 (It may be necessary to cut and paste the above URL if the line is broken) or send a blank email to leave-23016-13060.c78b93d4d09ef6235e9d494b35344...@fsulist.frostburg.edu<mailto:leave-23016-13060.c78b93d4d09ef6235e9d494b35344...@fsulist.frostburg.edu> --- You are currently subscribed to tips as: arch...@jab.org. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=23020 or send a blank email to leave-23020-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
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