These are chat archives for nightscout/intend-to-bolus

15th
Aug 2015
kenstack
@kenstack
Aug 15 2015 00:06
its that adjust the alarm point part … if you look at the 640g it turns off basal when the predictor says BG will cross below 20 mg/dl ABOVE your threshold value 30 minutes from now. I assume their predictor is quite good - was reading about the guys from Israel that MDT bought - their whole value add is their predictor - they weight 3 predictors - glucodyn like predictor, AR2 like predictor and a 3rd (some sort of fuzzy logic) - they claim they switch back and forth based on conditions and transitions from rises to falls
Chris Hannemann
@channemann
Aug 15 2015 00:10
Aside from the specifics of the predicition method, isn't that very similar to adjusting basal to hit a target range?
If you are trying to hit 100 - 120, and you are predicted to hit 90, you would temp low
slightly different than a temp suspend if you're threshold is 70, but not all that dissimilar
kenstack
@kenstack
Aug 15 2015 00:12
yes correct
I let mathematica pick the best fit model - it chose an ARMA (3,3) - no real improvement - same behavior
Chris Hannemann
@channemann
Aug 15 2015 00:13
How far out are you predicting?
kenstack
@kenstack
Aug 15 2015 00:14
5,10,15,20,25 and 30 min
after 15 min its pretty much flat
assuming you are dropping 1-2 mg/dl/min
Chris Hannemann
@channemann
Aug 15 2015 00:14
And is most of the error you see after 10-15 min?
kenstack
@kenstack
Aug 15 2015 00:25
I would say that it underpredicts almost immediately but yes
Chris Hannemann
@channemann
Aug 15 2015 00:43
When you say under predicts, do you mean the absolute value of dBG/dt is low? Like, it's direction independent?
kenstack
@kenstack
Aug 15 2015 00:44
no it gets the direction right but underpredicts the absolute value of the change in either direction.
Chris Hannemann
@channemann
Aug 15 2015 00:47
Ok, yeah, we are on the same page
I have some thoughts, but the train finally pulled into Portland, so I am brewery-bound; will have to pick this up later
Nathan Racklyeft
@loudnate
Aug 15 2015 03:25

Not sure if anybody has looked through a 523 manual in a while, but this was funny:

At this time, PC software to modify pump programmed settings is not available and therefore the Change Settings option is not functional. If you should accidentally navigate to the Change Settings option as shown below, press ESC to cancel.

Ben West
@bewest
Aug 15 2015 03:38
lol
kenstack
@kenstack
Aug 15 2015 03:59
wish we could enable that all the time