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. 2022 Nov 2;13:1016072. doi: 10.3389/fendo.2022.1016072

Table 2.

Odds Ratios (OR) for true (SMBG) hypoglycaemia at various CGM glucose values. n = number.

CGM reporting n OR true glucose <3.5mmol/L (n = 185) OR true glucose <3.0mmol/L (n = 48)
>6.0mmol/L 401 0.007 0.002
>5.0mmol/L 729 0.010 0.001
>4.0mmol/L 1093 0.042 0.003
>3.5mmol/L 1250 0.079 0.010

As CGM values increase the odds of the true value being < 3.5 or 3.0 decreases. A CGM value >4mmol/L results in a 4% chance of a true value <3.5mmol/L and a 0.3% chance of a true value <3.0.