Since we have been off for the holidays, I have really been thinking that our pumping correction factor is way off. We have barely changed it since we started pumping several years ago. My 7 year old weighs about 60 pounds and uses roughly 20 - 22 units of insulin per day (TDD). Our correction factor now is 1 unit : 210. It seems not to be sufficient. I looked up some calculators which show 1800/TDD (20) = correction factor of 90! That is way different than what we have. Thinking about going down to 150 to give it a shot - not all the way to 100. Anyone have any knowledge or comparison for correction factor for pump?