Table 3

Ultrasonography of fetal growth and development

2-Step CC criteria (April 2011–March 2012)P: GDM vs. NGTIADPSGC (April 2012–March 2013)P: GDM vs. NGTP: CC cohort vs. IADPSGC cohort
AllGDMNGTAllGDMNGT
N1,7501851,5651,526542984
GA at 2nd trimester20 (19.5–20.4)20 (19.6–20.4)20 (19.5–20.3)0.09820.1 (19.6–20.4)20.1 (19.6–20.4)20.1 (19.6–20.4)0.3230.073
 Biparietal diameter (cm)4.7 (4.6–4.9)4.8 (4.6–5.0)4.7 (4.6–4.9)0.2944.8 (4.6–5.0)4.8 (4.6–5.0)4.8 (4.6–5.0)0.7080.428
 AC (cm)15.3 (14.8–15.9)15.4 (14.7–16.1)15.3 (14.8–15.9)0.49115.4 (14.8–16.0)15.4 (14.8–16.0)15.3 (14.8–16.0)0.3250.271
 Femur length (cm)3.2 (3.1–3.4)3.3 (3.1–3.4)3.2 (3.1–3.4)0.3463.2 (3.1–3.4)3.2 (3.1–3.4)3.2 (3.1–3.4)0.3310.098
 NIG for GA1,540 (88)160 (85.6)1,380 (88)0.0011,390 (91.1)486 (89.7)904 (92)0.1320.001
GA at 3rd trimester32 (31.6–32.3)32 (31.8–32.4)32 (31.6–32.2)0.09532 (31.6–32.3)32 (31.6–32.3)32 (31.6–32.3)0.6870.351
 Biparietal diameter (cm)8.2 (8.0–8.4)8.2 (8.0–8.5)8.2 (8.0–8.4)0.8678.2 (8.0–8.4)8.2 (8.0–8.5)8.2 (8.0–8.4)0.9130.694
 AC (cm)28.2 (27.3–29.1)28.4 (27.3–29.4)28.2 (27.3–29.0)0.31628.2 (27.3–29.0)28.2 (27.3–29.1)28.1 (27.2–28.9)0.1090.560
 Femur length (cm)6.1 (6.0–6.3)6.2 (6.0–6.3)6.1 (5.9–6.2)0.016.1 (6.0–6.3)6.1 (6.0–6.3)6.1 (6.0–6.2)0.0750.998
 Weight estimation (g)1,960 (1,836–2,100)2,000 (1,850–2,157)1,960 (1,830–2,100)0.0351,950 (1,825–2,081)1,970 (1,832–2,100)1,950 (1,821–2,065)0.0390.037
 NIG for GA1,522 (87)157 (85)1,365 (87)0.0011,352 (89)470 (87)882 (90)0.0900.001
  • Data are median (quartile 1–quartile 3) or n (%). GA, gestational age; NIG, normal intrauterine growth for GA.