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From: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG>
Subject: [DCHAS-L] [New post] When does a reduction in injury numbers become statistically significant?
Date: Tue, 25 Jun 2019 12:24:30 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
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From: Safety Differently <donotreply**At_Symbol_Here**wordpress.com>
Subject: [New post] When does a reduction in injury numbers become statistically significant?
Date: June 25, 2019 at 11:07:41 AM GMT-4
New post on Safety Differently

When does a reduction in injury numbers become statistically significant?

By Dr. Marloes Nitert and Dr. Sidney Dekker 

Those who've been around safety (and particularly safety differently) long enough, know that LTI (Lost Time Injuries) is a lousy safety measure. LTI, after all, was once instituted as a productivity measure, not a safety measure. But LTI is actually quite a silly measure too. This blog shows just how silly it gets, and how foolish (or statistically meaningless) any claims about LTI reduction really are. 

more at ...

http://www.safetydifferently.com/when-does-a-reduction-in-injury-numbers-become-statistically-significant/


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