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<blockquote data-quote="tim2000s" data-source="post: 1563805" data-attributes="member: 30007"><p>As an experiment, and because I was fed up with the massive highs I was experiencing, I flipped over to Novorapid yesterday. Astonishing difference. Immediate return to normal IC ratio (had been languishing at 1u:4.5g carbs. Instant return to 1u:9g. I'm going to be taking the rest of the batch of insulin back to the pharmacist and asking for replacement vials, just to absolutely confirm it wasn't the insulin batch that was the issue, but it has raised some serious concerns for me about Fiasp.</p><p></p><p>What's interesting is there seems to be a lot less strong correlation between carb content and bolus amounts over the last six weeks than expected. When I took a further dig, I found that for most of the last six weeks, the correlation between carb count and bolus was roughly 80% (varying between 78% and 91%) but for the last week it dropped to 63%. </p><p></p><p>When I apply a trendline to this data, I get some interesting results too. Namely, the R-squared value for the data-set is terrible, suggesting that over a period of time, it's pretty hard to determine the amount you'll need to bolus based on the carb counted content of the food. </p><p></p><p>Taking that a step further, and breaking the periods out on a week by week basis, I can see that some weeks there is a pretty strong link between amount entered and bolus amount administered and on other occasions, although there doesn't seem to be a pattern of worsening R-squared. </p><p></p><p>I really need a week of NovoRapid data to make a comparison of the difference between the two.</p></blockquote><p></p>
[QUOTE="tim2000s, post: 1563805, member: 30007"] As an experiment, and because I was fed up with the massive highs I was experiencing, I flipped over to Novorapid yesterday. Astonishing difference. Immediate return to normal IC ratio (had been languishing at 1u:4.5g carbs. Instant return to 1u:9g. I'm going to be taking the rest of the batch of insulin back to the pharmacist and asking for replacement vials, just to absolutely confirm it wasn't the insulin batch that was the issue, but it has raised some serious concerns for me about Fiasp. What's interesting is there seems to be a lot less strong correlation between carb content and bolus amounts over the last six weeks than expected. When I took a further dig, I found that for most of the last six weeks, the correlation between carb count and bolus was roughly 80% (varying between 78% and 91%) but for the last week it dropped to 63%. When I apply a trendline to this data, I get some interesting results too. Namely, the R-squared value for the data-set is terrible, suggesting that over a period of time, it's pretty hard to determine the amount you'll need to bolus based on the carb counted content of the food. Taking that a step further, and breaking the periods out on a week by week basis, I can see that some weeks there is a pretty strong link between amount entered and bolus amount administered and on other occasions, although there doesn't seem to be a pattern of worsening R-squared. I really need a week of NovoRapid data to make a comparison of the difference between the two. [/QUOTE]
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