by revere, cross-posted from Effect Measure The National Health Interview Survey (NHIS) has been conducted since 1957 and is one of the main instruments to get a glimpse at the health of the US population. The NHIS is a “multistage area probability
Read More...
Read the complete post at http://thepumphandle.wordpress.com/2010/02/22/falls-lead-the-injury-pack/
Posted
Feb 22 2010, 12:02 PM
by
The Pump Handle