Quantcast

Subscribe to:
POZ magazine
Newsletters
Join POZ: Facebook MySpace Twitter Pinterest
Tumblr Google+ Flickr Instagram
POZ Personals
Sign In / Join
Username:
Password:
Welcome, Guest. Please login or register.
October 24, 2014, 08:13:36 PM

Login with username, password and session length


Members
Stats
  • Total Posts: 643460
  • Total Topics: 48959
  • Online Today: 196
  • Online Ever: 585
  • (January 07, 2014, 02:31:47 PM)
Users Online

Welcome


Welcome to the POZ/AIDSmeds Community Forums, a round-the-clock discussion area for people with HIV/AIDS, their friends/family/caregivers, and others concerned about HIV/AIDS.  Click on the links below to browse our various forums; scroll down for a glance at the most recent posts; or join in the conversation yourself by registering on the left side of this page.

Privacy Warning:  Please realize that these forums are open to all, and are fully searchable via Google and other search engines. If you are HIV positive and disclose this in our forums, then it is almost the same thing as telling the whole world (or at least the World Wide Web). If this concerns you, then do not use a username or avatar that are self-identifying in any way. We do not allow the deletion of anything you post in these forums, so think before you post.

  • The information shared in these forums, by moderators and members, is designed to complement, not replace, the relationship between an individual and his/her own physician.

  • All members of these forums are, by default, not considered to be licensed medical providers. If otherwise, users must clearly define themselves as such.

  • Forums members must behave at all times with respect and honesty. Posting guidelines, including time-out and banning policies, have been established by the moderators of these forums. Click here for “Am I Infected?” posting guidelines. Click here for posting guidelines pertaining to all other POZ/AIDSmeds community forums.

  • We ask all forums members to provide references for health/medical/scientific information they provide, when it is not a personal experience being discussed. Please provide hyperlinks with full URLs or full citations of published works not available via the Internet. Additionally, all forums members must post information which are true and correct to their knowledge.

  • Product advertisement—including links; banners; editorial content; and clinical trial, study or survey participation—is strictly prohibited by forums members unless permission has been secured from POZ.

To change forums navigation language settings, click here (members only), Register now

Para cambiar sus preferencias de los foros en español, haz clic aquí (sólo miembros), Regístrate ahora

Finished Reading This? You can collapse this or any other box on this page by clicking the symbol in each box.

Author Topic: What's in a log? Reading viral load numbers and log values...  (Read 1768 times)

0 Members and 1 Guest are viewing this topic.

Offline newt

  • Member
  • Posts: 3,885
  • the one and original newt
Because I was asked, and there was a Q in another thread...

What's in a log?

Viral load can be expressed as a NUMBER or a LOG VALUE.  A log is the number of times ten must be multiplied with itself to equal a certain number.  For example, log 2 = 100 (10 x 10),  log 5 is 100,000 (10 x 10 x 10 x 10 x 10).

Dividing a number by 10 is the same as a 1 log drop.

When comparing big numbers, it's sometimes easier to use logs because what looks like a massive change is in fact relatively small. For example: A viral load of 800,000 is log 5.9, 80,000 is log 4.9.  So you's thinking "Wow! a massive drop in virus!" But in log terms it's the same as a drop from 500 (log 2.7) to 50 (log 1.7), which in number terms don't seems as grand as losing 720,000 of the little buggers does it...

A change in viral load of 0.5 log is significant.

You can convert a number into a log value by entering "log(THE NUMBER)" into the Google search box, for example enter "log(50)" and press RETURN and you will give you the result "log(50) = 1.69897".

HANDY LOG TABLE

Viral load is...Log value...
501.7
1002
3302.5
5002.7
8002.9
1,0003
3,3003.5
5,0003.7
8,0003.9
33,0004.5
50,0004.7
80,0004.9
500,0005.7
800,0005.9
1 million6

- matt "Viral load less than log 1.7" the newt


"The object is to be a well patient, not a good patient"

 


Terms of Membership for these forums
 

© 2014 Smart + Strong. All Rights Reserved.   terms of use and your privacy
Smart + Strong® is a registered trademark of CDM Publishing, LLC.