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. Author manuscript; available in PMC: 2021 Apr 1.
Published in final edited form as: J Clin Pharmacol. 2019 Nov 19;60(4):540–549. doi: 10.1002/jcph.1549

Table 4.

Mean difference in mixed meal tolerance test parameters during treatment with metformin (study day 2 and change from study day 1 to study day 2) for women with gestational diabetes mellitus and non-pregnant women with type 2 diabetes mellitus

Parameter Mean
difference on
SD2 between
study arms
p value
comparing
mean value
on SD2
between
study arms
p value
comparing mean
change from SD1
to SD2 between
study arms
SI (10−4 min−1 μU−1 mL) −1.6
(−5.2 to 1.86)
0.3 0.9
Φtotal (10−9 min−1) 86
(51 to 121)
0.00001 0.4
Φstatic (10−9 min−1) 76
(43 to 109)
0.00005 0.4
Φdynamic (10−9 min−1) 1400
(779 to 2020)
0.00006 0.7
Φbaseline (10−9 min−1) 1.4
(−2.3 to 5.1)
0.4 0.001
DI (10−13 min−2 μU−1 mL) 422
(227 to 617)
0.0001 0.01
Peak glucose (mg/dL) −85
(−133 to −37)
0.002 0.08

GDM = gestational diabetes mellitus, T2DM = type 2 diabetes mellitus, SI = insulin sensitivity, Φtotal = total β-cell responsivity, Φstatic = static β-cell responsivity, Φdynamic = dynamic β-cell responsivity, Φbaseline = baseline β-cell responsivity, DI = disposition index, MMTT = mixed meal tolerance test. Results reported as mean ± standard deviation. The values for women with GDM were adjusted to account for normal gestational age-dependent. Refer to Table 2 for actual parameter values.