Table 3 Growth velocities of SGA, AGA, and LGA preterm infants from CA 40 weeks to 24 months

SGA

Overall

–

< 0.001

–

< 0.001

CA 40 weeks- 3 months

0.37 (0.28–0.45)

< 0.001

0.37 (0.16–0.49)

< 0.001

CA 3–6 months

0.14 (0.06–0.23)

0.001

0.27 (0.15–0.38)

< 0.001

CA 6–9 months

0.05 (−0.03–0.15)

0.243

0.07 (−0.06–0.19)

0.278

CA 9–12 months

0.04 (− 0.06–0.13)

0.433

− 0.00 (− 0.13–0.13)

0.992

CA 12–18 months

−0.10 (− 0.20–0.00)

0.057

0.03 (− 0.10–0.17)

0.640

CA 18–24 months

0.15 (0.01–0.29)

0.035

0.25 (0.07–0.44)

0.008

AGA

Overall

–

< 0.001

–

< 0.001

CA 40 weeks- 3 months

0.08 (0.07–0.11)

< 0.001

0.07 (0.05–0.10)

< 0.001

CA 3–6 months

−0.07 (− 0.09- -0.05)

< 0.001

0.00 (− 0.02–0.03)

0.751

CA 6–9 months

−0.10 (− 0.12- -0.08)

< 0.001

−0.07 (− 0.10- -0.05)

< 0.001

CA 9–12 months

−0.09(− 0.11- -0.07)

< 0.001

−0.10 (− 0.12- -0.07)

< 0.001

CA 12–18 months

−0.17 (− 0.20- -0.15)

< 0.001

−0.12 (− 0.14- -0.09)

< 0.001

CA 18–24 months

−0.03 (− 0.06- − 0.00)

0.032

-0.00 (− 0.04–0.04)

0.999

LGA

Overall

–

< 0.001

–

< 0.001

CA 40 weeks- 3 months

− 0.22(− 0.29- -0.14)

< 0.001

− 0.29 (− 0.38- -0.20)

< 0.001

CA 3–6 months

−0.21 (− 0.29- -0.14)

< 0.001

−0.08 (− 0.17–0.01)

0.069

CA 6–9 months

−0.20 (− 0.29- -0.12)

< 0.001

−0.18 (− 0.27- -0.08)

< 0.001

CA 9–12 months

−0.07 (− 0.16–0.02)

0.129

−0.13 (− 0.23- -0.03)

0.009

CA 12–18 months

−0.24 (− 0.33- -0.15)

< 0.001

−0.13 (− 0.24- − 0.03)

0.012

CA 18–24 months

-0.03 (− 0.15–0.09)

0.667

−0.08 (− 0.22–0.05)

0.218