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In another study, Damm et al
(1994), followed women with previous GDM and non-diabetic controls for the
purpose of ascertaining their diabetes status. This slide shows that among women
with previous GDM, a significant lower percent had a normal glucose tolerance
test at follow-up compared with women without previous GDM (p<0.01). In
addition women with previous GDM had an higher percent of OGTT results
compatible with the diagnosis of impaired glucose tolerance (IGT) that women
without previous GDM. None of the control women developed diabetes during
follow-up in contrast to almost 11% of women with previous GDM who developed
type 2 diabetes and an additional 4.3% who were diagnosed as type 1 diabetic.
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