Postnatal growth of preterm infants during the first two years of life: catch-up growth accompanied by risk of overweight

Table 2 Change of z-scores in preterm infants from CA 40 weeks to 24 months

Corrected age	Z-score change of weight		Z-score change of length/height
Corrected age	Difference (95% CI)^a	P-value	Difference (95% CI)^a	P-value
Overall	–	< 0.001	–	< 0.001
CA 40 weeks-3 months	0.08 (0.06–0.10)	< 0.001	0.07 (0.04–0.09)	< 0.001
CA 3–6 months	− 0.07 (− 0.09- -0.05)	< 0.001	0.01 (− 0.01–0.04)	0.310
CA 6–9 months	− 0.10 (− 0.12- -0.08)	< 0.001	− 0.07 (− 0.10- -0.05)	< 0.001
CA 9–12 months	− 0.08 (− 0.10- -0.06)	< 0.001	− 0.09 (− 0.12- -0.07)	< 0.001
CA 12–18 months	− 0.17 (− 0.20- -0.15)	< 0.001	− 0.11 (− 0.14- -0.08)	< 0.001
CA 18–24 months	− 0.02 (− 0.06–0.00)	0.071	0.00 (− 0.03–0.04)	0.918

^a Gestational age, gender, birth weight z-score, and intrauterine growth status were adjusted;
CA corrected age; CI confidence interval

ISSN: 1824-7288