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Table 3 Weight, SDS weight, SDS length/height, SDS head circumference and SDS BMI from birth to age five years

From: Enteral feeding advancement and growth until 5 years in extremely preterm infants

Time Cohort 1 Cohort 2
  n Weight (kg) SDS weight SDS length/height SDS head circumference SDS BMI n Weight (kg) SDS weight SDS length/height SDS head circumference SDS BMI
Birth 84 0.740 (0.597–0.932) − 1.17 (− 2.09 - -0.23) N/A − 1.39 (− 2.04 - -0.50) N/A 61 0.785 (0.620–0.980) − 1.40 (− 2.24 - -0.61) N/A − 1.16 (− 2.06 - -0.52) N/A
Discharge 84 2.692 (2.370–3.044) − 1.24 (− 2.01 - -0.69) − 2.24 (− 3.17 - -1.58) − 0.72 (− 1.55–0.09) 0.27 (− 0.38–1.02) 61 2.530 * (2.028–2.858) − 1.42 (− 2.35 - -0.68) −2.65 (− 3.39 - -1.75) −1.17* (− 2.06 - -0.76) 0.18 (− 0.41–1.01)
S1 (6–7 months) 74 5.22 (4.74–5.85) − 1.47 (− 2.21 - -0.77) −1.31 (− 1.85 - -0.41) −0.81 (− 1.7 - -0.10) −1.09 (− 1.72 - -0.36) 56 5.02 (4.56–5.80) −1.84 (− 2.54 - -0.81) −1,35 (− 2.25 - -0.26) −1.19 (− 2.02 - -0.49) −1.52 (− 2.16 - -0.46)
S2 (10–12 months) 74 7.31 (6.66–8.21) −1.68 (− 2.62 - -1.00) −0.75 (− 1.26–0.18) − 1.40 (− 2.22 - -0.85) −1.67 (− 2.8 - -0.98) 52 7.09 (6.29–7.98) −2.07 (− 3.17 - -0.99) −0.61 (− 1.47–0.25) −1.69 (− 2.75 - -1.13) −2.06 (− 2.92 - -1.16)
S3 (21–24 months) 74 10.00 (9.36–10.92) −1.46 (− 2.16 - -0.77) −0.74 (− 1.35 - -0.09) −1.67 (− 2.46 - -0.75) −1.44 (− 2.36 - -0.64) 45 9.53 (8.62–10.50) −1.79 (− 3.09 - -1.13) −0.65 (− 1.84 - -0.06) −2.12 (− 2.90 - -1.37) −1.91 (− 2,77 - -0.77)
S4 (46–48 months) 58 13.65 (12.42–15.00) −1.30 (− 2.11 - -0.35) −0.32 (− 0.92–0.32) − 1.89 (− 2.52 - -1.25) −1.48 (− 2.23 - -0.7) 42 13.50 (12.00–15.00) −1.51 (− 2.35 - − 0.39) -0.39 (− 1.14–0.07) −2.09 (− 3.23 - -1.31) −1.76 (− 2.18 - -0.79)
S5 (60–64 months) 51 16.00 (14.35–18.00) −1.08 (− 1.91 - -0.06) − 0.16 (− 1.02–0.28) −1.78 (− 2.66 - -1.17) −1.14 (− 1.87 - -0.46) 43 15.65 (13.80–17.57) −1.51 (− 2.36 - -0.35) − 0.65 (− 1.58–0.13) −2.17 (− 3.04 - -1.38) −1.27 (− 2.10 - -0.71)
  1. All data presented as median (Q1, Q3), N/A not available (SDS length and SDS BMI could not be computed before term)
  2. Abbreviations: Body mass index (BMI), Standard deviation score (SDS)
  3. *Significantly different between the two cohorts (p < 0.05; Mann-Whitney-Test)
  4. Child’s routine developmental screening examinations: S1: 6 to 7 months after birth, S2: 10 to 12 months after birth, S3: 21 to 24 months after birth, S4: 46–48 months after birth, S5: 60–64 months after birth