Index HOMA-IR.

 This index shows you're sensitive to insulin, higher sensitive to insulin, thus you are less resistance to insulin- and in this case  a  number is less 1.And,  contrary, a worse   sensitiveness to insulin, thus you   are resistance /stable/ to insulin, and here is index more 1, and its worse variant. 

Index HOMA-IR calculating by following formula:

HOMA-IR is glucose on an empty stomach /mmol/l is multiply on insulin on an empty stomach /mU/L22.5 . And,  nobody , is not calculating a HOMA-IR by this hard formula, but using special calculators . For example, I'm using calculator an  omnicalculator.com, where in search button am typing HOMAIR , selecting right units of measures a glucose .mmol/l, and insulin mU/L and entering numbers. If the level  of glucose on am empty stomach or insulin is rising, index HOMA-IR is rising.For  example is glucose of level on am empty stomach having 4.5 mmol/l , and insulin is 5.0 mMel, HOMA-IR  is 1,0 norm, if level of glucose on an empty stomach having  6.0 mmol/l, and insulin 15 mMe/l , HOMA-IR as 4.0 /high/.

By Beekman professor , meaning for index a higher on 1.5 shows is on the hide insulin resistance, and meaning index is higher 3 is saying about, that you  are on edges a development diabetes 2 nd  type, ideal meaning HOMA-IR, by his words is must  be from 0.5-till 1.0 .