Research Article

Incidence and Contributing Factors of Persistent Hyperglycemia at 6–12 Weeks Postpartum in Iranian Women with Gestational Diabetes: Results from LAGA Cohort Study

Table 1

Demographic and clinical characteristics associated with postpartum glucose test results among women with recent gestational diabetes at 6–12 weeks postpartum.

CharacteristicsTotal ()
NGT () AGT () value
(%)(%) (%)

Education
<high school54 (30.7)47 (34.3)7 (17.9)0.03
High school81 (46.0)56 (40.9)25 (64.1)
Collage41 (23.3)34 (24.8)7 (17.9)

Gravidity
149 (27.8)38 (27.7)11 (28.2)0.58
257 (32.4)42 (30.7)15 (38.5)
340 (22.7)31 (22.6)9 (23.1)
≥430 (17.0)26 (19.0)4 (10.3)

Ethnicity
Fars63 (35.8)47 (34.3)16 (41.0)0.29
Lor33 ( 18.8)29 (21.2)4 (10.3)
Arab80 (45.5)61 (44.5)19 (48.7)

Prepregnancy BMI
Normal50 (28.4)43 (31.4)7 (17.9)0.20
Overweight73 (41.5)56 (40.9)17 (43.6)
Obesity53 (30.1)38 (27.7)15 (38.5)

Preterm delivery (<37 weeks’ gestation)
Yes14 (8.0)7 (5.1)7 (17.9)0.009
No162 (92.0)130 (94.9)32 (82.1)

Mode of delivery
Vaginal76 (43.2)64 (46.7)12 (30.8)0.07
Cesarean section100 (56.8)73 (53.3)27 (69.2)

History of GDM in family
Yes47 (42.7)17 (63.0)0.05
No73 (53.3)63 (57.3)10 (37.0)

History of diabetes in family
Yes98 (55.7)76 (55.5)22 (56.4)0.57
No78 (44.3)61 (44.5)17 (43.6)

Hypertension in pregnancy
Yes26 (14.8)17 (12.4)9 (23.1)0.09
No150 (85.2)120 (87.6)30 (76.9)

Nutrition of infant 6–12 weeks after birth
Breast feeding131 (74.4)102 (74.5)29 (74.4)0.99
Formula or combined45 (25.6)35 (25.5)10 (25.6)

Treatment of GDM
Nutrition142 (80.7)120 (87.6)22 (56.4)<0.001
Metformin12 ( 6.8)7 (5.1)5 (12.8)
Insulin22 (12.5)10 (7.3)12 (30.8)

Number of abnormal tests in pregnancy
187 (49.4)71 (51.8)16 (41)0.40
241 (23.3)31 (22.6)10 (25.6)
327 (15.3)18 (13.1)9 (23.1)
≥421 (11.9)17 (12.4)4 (10.3)

NGT, normal glucose tolerance; AGT, abnormal glucose tolerance (prediabetes or diabetes); GDM, gestational diabetes mellitus.
Using chi square test.
Normal ≤ 29.9 kg/m2, overweight ≥ 25kg/m2, obesity ≥ 30 kg/m2.
Missing data are unknown history of GDM in family.