Serum Potassium and Glucose Regulation in the ADDITION-Leicester Screening Study

Table 3

Linear regression to determine the difference in HbA1c across K⁺ quartiles.

Models	K^+ quartiles
	<4.0 mmol/L	4.0–4.2 mmol/L	4.3–4.4 mmol/L	≥4.5 mmol/L
Model 1^a	−0.14 (−0.19 to −0.10)	−0.08 (−0.12 to −0.04)	−0.05 (−0.09 to −0.006)	Reference
	Model 2^b	−0.15 (−0.19 to −0.11)	−0.08 (−0.12 to −0.04)		−0.04 (−0.08 to 0.001)	Reference
Model 3^c		−0.13 (−0.17 to −0.09)	−0.06 (−0.10 to −0.02)	−0.03 (−0.07 to 0.01)	Reference

Data reported as difference in HbA1c (95% confidence intervals).
^aUnadjusted.
^bAdjusted for baseline measures of average systolic and diastolic blood pressure and for Cockcroft-Gault estimated glomerular filtration rate.
^cAdjusted for the confounders in model 2, plus ethnicity, sex, age, and BMI.