MAD% and SD (standard Deviation) Options

[Linda B]

FYI:
SD (standard deviation) is a number that indicates how close to the average a series of numbers is. The lower the SD, the closer all the numbers are. So if we look at the SD along with the BG average, we know how tight our control is.

MAD% is a number that compares the meter BG and the SG(sensor glucose) whenever someone using the MM CGMS does a calibration. The lower the number, the closer the two numbers are. It is one way to measure how accurate a sensor has been.

My Standard Deviation is 22
Mad % 15.5

Those numbers are WONDERFUL! Especially your SD.

I just uploaded and ran a few Sensor Daily Overlay reports:
this past week was a little rough. I had several meals out and really goofed on carb counting.
My SD was 38
and
MAD was 18.2

Last week was better
SD = 31
MAD = 13.5

And the week before that:
SD = 31
MAD = 14.4


Linda B.

[Beowulf]

I can dream to get my SD down in the 20's! I'm usually right about 42-45. (IMG:style_emoticons/default/angry.gif)

Justin

[JohnG]

My last two weeks average.
SD 20.0
MAD 10.5

My best day in September to date.
SD 9.0
MAD 4.0

But last Monday my latest A1c was up from 5.7 to 6.2 I was really dissipointed according to my numbers
it should be in the 5's . Sometimes I can't believe I punish myself over something like this.
I tested my self twice during the last 3 months with a home A1c test and it was 5.8 and 5.6 the 6.2
from LabCorp was a complete surprise.

Just when I think I'm gaining a little ground on this illness it just pushes me backward. ;-(

[Linda B]

My last two weeks average.
SD 20.0
MAD 10.5

My best day in September to date.
SD 9.0
MAD 4.0

But last Monday my latest A1c was up from 5.7 to 6.2 I was really dissipointed according to my numbers
it should be in the 5's . Sometimes I can't believe I punish myself over something like this.
I tested my self twice during the last 3 months with a home A1c test and it was 5.8 and 5.6 the 6.2
from LabCorp was a complete surprise.

Just when I think I'm gaining a little ground on this illness it just pushes me backward. ;-(

John,
Those numbers are excellent. My doctor would not be happy for anyone with Diabetes to have an A1C below 6.0.
And if your 5.7 was an average of a lot of lows then 6.2 is much healthier.
Just my 2 cents.

I also want to say that the charts that correlate average BG to A1C have never matched up for me. My average BG always indicate a lower A1C than the A1C result. I think those charts are based on people who test 4 times a day not 10!

Linda B.

[JohnG]

(IMG:style_emoticons/default/cool.gif) --

John,
Those numbers are excellent. My doctor would not be happy for anyone with Diabetes to have an A1C below 6.0.
And if your 5.7 was an average of a lot of lows then 6.2 is much healthier.
Just my 2 cents.

I also want to say that the charts that correlate average BG to A1C have never matched up for me. My average BG always indicate a lower A1C than the A1C result. I think those charts are based on people who test 4 times a day not 10!

Linda B.

Your right there's nothing wrong with a low 6 and my Endo is always looking for low BG in my pump data. He has never
said my A1c is too low but he always says remember I'm only asking for you to keep your A1c at 6.5 or below.

I guess what scares me is until my next A1c I will worry about it going up even more. I only have an average of 3 or 4 excursions below
70 per month. I think what caused my A1c to go up is a change in my exercise routine. My 29 year old son rides with me when I'm
cycling so if I get in trouble I won't be all alone out on the road. About 7 weeks ago he fell and shattered his arm just above the wrist
and I have had to spend lots of days at home instead of being out on my bike. He's back on his bike now and I think my next A1c will
be back below 6.0. My wife took a bad spill a year ago in August and has never really gotten back on her bike sense.

JohnG

[Linda B]

Your right there's nothing wrong with a low 6 and my Endo is always looking for low BG in my pump data. He has never
said my A1c is too low but he always says remember I'm only asking for you to keep your A1c at 6.5 or below.

I guess what scares me is until my next A1c I will worry about it going up even more. I only have an average of 3 or 4 excursions below
70 per month. I think what caused my A1c to go up is a change in my exercise routine. My 29 year old son rides with me when I'm
cycling so if I get in trouble I won't be all alone out on the road. About 7 weeks ago he fell and shattered his arm just above the wrist and I have had to spend lots of days at home instead of being out on my bike. He's back on his bike now and I think my next A1c will be back below 6.0. My wife took a bad spill a year ago in August and has never really gotten back on her bike sense.

JohnG

Gee, with two out of the three of you injured, PLEASE BE CAREFUL!

Also, there is a wonderful at home workout tape called 'Walk at Home' by Leslie Sansome. Whenever I can't get out to my group activities, I do one of her 3 mile tapes. Next time you are unable to ride your bike you might want to look into one of her tapes. The routine is low impact aerobic, and involves just 5 steps: walking in place, lifting your knees, kicking, side steps, and lifting your leg behind you. She only does each one less than a minute so I don't get bored. I never used any exercise tapes before, but this one is great.

Linda B. (no relation to Leslie)

[gigem99]

FYI:
SD (standard deviation) is a number that indicates how close to the average a series of numbers is. The lower the SD, the closer all the numbers are. So if we look at the SD along with the BG average, we know how tight our control is.....

My apologies in advance for reviving such an old thread, but I was just told something that really startled me. I just got done with a MM class on advanced pumping skills, CGM & Carelink.

One of the things the MM trainer who conducted the class said was that the Standard Deviation multiplied by 2 should be less than you average BG. I went back and looked at my spreadsheet where I track these things, and my SD x 3 is less than my average BG. So, I guess that I'm pleased, although my average SD over the past three months has been about 45. I'd rather see it less than 30.

Tom

[Linda B]

My apologies in advance for reviving such an old thread, but I was just told something that really startled me. I just got done with a MM class on advanced pumping skills, CGM & Carelink.

One of the things the MM trainer who conducted the class said was that the Standard Deviation multiplied by 2 should be less than you average BG. I went back and looked at my spreadsheet where I track these things, and my SD x 3 is less than my average BG. So, I guess that I'm pleased, although my average SD over the past three months has been about 45. I'd rather see it less than 30.

Tom

WOW, I have never heard of a class that was truly ADVANCED! We no longer have any MM classes in this area. The trainer moved and now the one 'assigned' to the area is hours away.

I just looked on carelink. On my most recent report, my SD is 45, x 2 is 90 is certainly less than my average BG. My average is 122, so that's around 2.7 times my SD. Guess in that respect I am doing well. I am not that surprised, I try really hard to never go above 200 or below 100. Like you I wish my SD was a little lower.

But if I use the two weeks before that, my SD was 35 with an average BG of 124 - much better! That BG is about 3.5 times my SD.


Linda B.

[Liz]

WOW, I have never heard of a class that was truly ADVANCED! We no longer have any MM classes in this area. The trainer moved and now the one 'assigned' to the area is hours away.

I miss the Minimed classes. The space they used in a public library was taken away when the building was sold and the library closed. I check every so often but all of the classes are too far away and I don't drive. I would like to go to a class that shows how to really read & understand all of the Carelink reports.

[gigem99]

..... I would like to go to a class that shows how to really read & understand all of the Carelink reports.

She didn't really do a lot of explanation about the reports .... she just reported the SD deal kind of off the cuff, which led us to a discussion about Dr. Irl Hirsch. He's the one who pushes for low SD.'s

I also whined at length about wanting Carelink Pro. She said she totally understood, and doesn't really know why we don't have access to it.

There were only two of us in the 'class'. I'm afraid if there's not much more interest than that, they're not gonna have them anymore. I really enjoy meeting all the MM reps around here. This one didn't have DM, but her 17 y.o. son was dx'd about 13 years ago. I got the feeling that's why she became a CDE. Her son is the only person I've ever heard of that changes their sensor every three days. She just cringed when I told her I had left my last one in for 25 days or so.

I'm down to just 2 left, and it's gonna be really difficult to come up with $450 to buy a new box of the things. Maybe I'll have saved enough in a couple of months, but I've still got to figure out a way to get to Boston for Dr. Faustman. Dammit, I'm due to win the lottery!

Tom

[Linda B]

She just cringed when I told her I had left my last one in for 25 days or so.

I'm down to just 2 left, and it's gonna be really difficult to come up with $450 to buy a new box of the things. Maybe I'll have saved enough in a couple of months, but I've still got to figure out a way to get to Boston for Dr. Faustman. Dammit, I'm due to win the lottery!

Don't they still come in boxes of 4? That should be easier to pay out of pocket, and as long as they last you, it might be the better option for you.

Linda B.

[gigem99]

Don't they still come in boxes of 4? That should be easier to pay out of pocket, and as long as they last you, it might be the better option for you.

Linda B.

I didn't even know they came in boxes of 4!! And yes, they are available. Many thanks for that info. Oh, and the box of 10 is only $420, not $450, like I thought.

Tom