Table 3. Multivariate analysis for parameters influencing the glycation gap (GG).

Variable	Coefficient	95% CI	P value
Intercept	1.913	–0.251; 4.078	0.083
MCHC	–0.151	–0.213; –0.089	0.000
Glucaemia	–0.001	–0.002; –0.000	0.006
Creatinine	–0.218	–0.299; –0.138	0.000
Treatment with metformin	0.215	0.110; 0.319	0.000
HbA1c	0.48129	0.431; 0.530	0.000

r for the model  = 0.72; R² for model  = 0.52.