Table 2.
Fetal biometric variables in the GDM and control groups
| Fetal variable | GDM group (mean ± SD) | Control group (mean ± SD) | Adjusted β coefficient (95% CI) | p value |
|---|---|---|---|---|
| At 20 weeks’ gestation (prior to GDM diagnosis) | ||||
| HC, mm | 178.12 ± 11.59 | 181.39 ± 11.21 | −4.19 (−6.12, −2.26) | <0.0001 |
| −4.43 (−6.63, −2.23)a | <0.0001a | |||
| AC, mm | 154.41 ± 11.53 | 156.57 ± 11.12 | −2.99 (−5.03, −1.16) | 0.004 |
| −2.63 (−4.92, −0.34)a | 0.025a | |||
| FL, mm | 34.29 ± 4.32 | 34.86 ± 2.77 | −1.13 (−1.61, −0.65) | <0.0001 |
| −1.13 (−1.67, −0.58)a | <0.0001a | |||
| BPD, mm | 48.92 ± 3.12 | 49.95 ± 3.31 | −1.20 (−1.78, −0.62) | <0.0001 |
| −1.29 (−1.91, −0.63)a | <0.0001a | |||
| AAWT, mm | 2.63 ± 0.51 | 2.39 ± 0.41 | 0.28 (0.17, 0.38) | <0.0001 |
| 0.26 (0.15, 0.37)a | <0.0001a | |||
| At 28–32 weeks’ gestation | ||||
| HC, mm | 288.23 ± 17.71 | 297.81 ± 14.15 | −2.62 (−5.19, −0.06) | 0.040 |
| −2.51 (−5.41, 0.38)a | 0.089a | |||
| AC, mm | 265.87 ± 22.04 | 276.78 ± 19.02 | −2.82 (−6.21, 0.57) | 0.100 |
| −2.09 (−5.86, 1.68)a | 0.276a | |||
| FL, mm | 60.14 ± 4.80 | 62.79 ± 3.85 | −0.87 (−1.57, −0.16) | 0.017 |
| −0.55 (−1.27, 0.17)a | 0.131a | |||
| BPD, mm | 80.73 ± 5.23 | 83.29 ± 4.42 | −0.35 (−1.12, 0.42) | 0.37 |
| −0.20 (−1.04, 0.65)a | 0.65a | |||
| AAWT, mm | 4.65 ± 0.81 | 4.37 ± 0.66 | 0.50 (0.34, 0.66) | <0.0001 |
| 0.48 (0.30, 0.65)a | <0.0001a | |||
The control group was used as the reference category
β coefficient for respective fetal biometry variables using multivariable linear regression after adjustment for maternal age, BMI, parity, fetal sex and gestational age
aAdjustment as above plus GWG/week