Table 1

Maternal and fetal characteristics in 846 normoalbuminuric and microalbuminuric women with type 1 diabetes

NormoalbuminuriaMicroalbuminuriaP
n76284
Age (years)28 (25–32)27 (24–31)0.34
BMI (kg/m2)23 (21–25)24 (22–26)0.002
Duration of diabetes (years)10 (4–17)15 (10–20)<0.001
Nulliparity452 (59)57 (68)0.12
Prepregnancy insulin dose (IU/day)44 (32–54)47 (40–58)<0.001
Blood pressure ≥140/90 mmHg at first visit5 (1)3 (4)<0.001
Proliferative retinopathy25 (3)9 (11)<0.001
First-trimester A1C (%)7.1 (6.4–8.0)7.6 (6.8–8.5)0.007
Third-trimester A1C (%)6.6 (6.0–7.3)6.8 (6.2–7.5)0.14
Hypertension during second trimester*11 (1.5)11 (13)<0.001
Preeclampsia92 (12)34 (41)<0.001
Gestational age (days)260 (252–266)260 (250–266)0.2
Gestational age <34 weeks45 (6)11 (13)0.02
Gestational age <37 weeks284 (37)30 (36)0.78
Birth weight (g)3,650 (3,162–4,060)3,335 (2,900–3,650)<0.001
Large-for-gestational-age infant483 (63)42 (50)0.02
  • Data are medians (interquartile range) or n (%).

  • *Blood pressure ≥140/90 mmHg.