# Is Standard Deviation more important than average BG or Time-In-Range?

**URL:** <https://forum.fudiabetes.org/t/is-standard-deviation-more-important-than-average-bg-or-time-in-range/6479>\
**Category:** Treatment\
**Created:** [February 7, 2019, 12:37am UTC](https://forum.fudiabetes.org/t/is-standard-deviation-more-important-than-average-bg-or-time-in-range/6479 "2019-02-07T00:37:35Z")\
**Posts on this page:** 1\
**Page:** 2

<div class="post-metadata">

**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\
**Post date:** [February 8, 2019, 6:58pm UTC](https://forum.fudiabetes.org/t/is-standard-deviation-more-important-than-average-bg-or-time-in-range/6479/21 "2019-02-08T18:58:01Z")

</div>

> [@Nickyghaleb](#):
>
> According to what? How do you measure your time in range?

Well, as you have pointed out there are two issues at play.  
#1 - What is my range to try to maintain. If you choose a range of 50-300, you would have a TIR of 100%, but if you choose 70-80 (obviously absurd) then you would have a very low TIR. What you set your range to has a lot of influence.

#2 - Is my method of measurement accurate? Well thankfully for us the Dexcom is mostly accurate most of the time, so a TIR has more meaning to us than to someone for whom the technology doesn’t work as well.

Without having a well thought out range, and a measurement system that works for you most if not all of the time, then the TIR isn’t all that helpful.

[Previous page](https://forum.fudiabetes.org/t/is-standard-deviation-more-important-than-average-bg-or-time-in-range/6479.md?page=1)