Table 4.

Results of Repeated-Measures Models for Glucose and Glycerol Ra

	Estimate	P Value
Glucose Ra
Basal phase; mean insulin concentration 30 IU/mL	−0.295 ± 0.321	0.36
Phase 16 mU/m2/min; mean insulin concentration 30 IU/mL	0.146 ± 0.256	0.57
Phase 80 mU/m2/min; mean insulin concentration 149 IU/mL	0.053 ± 0.373	0.89
Glycerol Ra
Basal phase; mean insulin concentration 30 IU/mL	0.435 ± 1.728	0.80
Phase 16 mU/m2/min; mean insulin concentration 30 IU/mL	−1.013 ± 1.598	0.53
Phase 80 mU/m2/min; mean insulin concentration 149 IU/mL	−0.272 ± 1.072	0.81

For each measurement, data shown are metformin vs placebo and the change from baseline to 13 wks.