Table 3.

Patient factors affecting glycemic control after routine administration of 500 mg metformin twice daily for 6 weeks.

Dependent Variable	Independent Variable	Coefficient	Correlation Coefficient	P Value
Final FBG	Duration of previous metformin therapy	−33.335	−0.415	0.010*
	Initial GA	3.428	0.513	0.002*
	Cssmin	−27.215	−0.296	0.160
	Cssmax	13.275	0.321	0.126
FBG Changes	eGFR	1.202	0.425	0.005*
	Initial FBG	−1.327	−1.277	0.000*
	Initial GA	4.491	0.497	0.012*
	Cssmin	−40.719	−0.328	0.042*
	Cssmax	24.444	0.438	0.015*
Final GA	eGFR	0.075	0.266	0.037*
	Initial FBG	−0.059	−0.575	0.003*
	Initial GA	1.036	1.156	0.000*
	Cssmax	1.608	0.290	0.014*
GA Changes	eGFR	0.074	0.381	0.035*
	Initial FBG	−0.056	−0.780	0.000*
	Cssmax	1.591	0.414	0.012*

^*Significance value < 0.05; C^ss steady-state concentration; FBG fasting blood glucose; GA glycated albumin; eGFR estimated glomerulus filtration rate.