Table 2

Growth parameters for EP children and controls at 11 years of age in the 2006 cohort

EP: Mean (95% CI)P value* Controls:
Mean (95% CI)
EP vs controls
difference in means (95% CI)
P value
≤23 weeks24 weeks25 weeks26 weeksAll
Height (cm)149.9 (145.1 to 154.7) (n=14)147.0 (143.4 to 150.5) (n=28)149.8 (147.6 to 152.0) (n=69)148.4 (146.1 to 150.6) (n=87)148.8 (147.4 to 150.1) (n=198)0.825151.6 (150.3 to 152.8) (n=143)−2.77
(−4.70 to −0.85)
0.005
Weight (kg)46.3 (37.1 to 55.5) (n=15)42.0 (38.3 to 45.8) (n=28)42.1 (39.4 to 44.7) (n=69)41.3 (38.9 to 43.6) (n=87)42.0 (40.5 to 43.6) (n=199)0.19344.8 (43.0 to 46.6) (n=142)−2.76
(−5.17 to −0.36)
0.024
BMI (kg/m2)20.8 (17.9 to 23.6) (n=14)19.3 (17.9 to 20.7) (n=28)18.6 (17.7 to 19.5) (n=69)18.5 (17.8 to 19.2) (n=87)18.8 (18.3 to 19.3) (n=198)0.05619.4 (18.7 to 20.0) (n=142)−0.57
(−1.37 to 0.23)
0.161
Head circumference (cm)52.4 (51.0 to 53.8) (n=15)52.4 (51.5 to 53.2) (n=28)52.6 (52.0 to 53.2) (n=64)52.8 (52.3 to 53.3) (n=87)52.7 (52.3 to 53.0) (n=194)0.19054.1 (53.8 to 54.4) (n=142)−1.47
(−1.93 to −1.01)
<0.001
Height z-score0.26 (−0.37 to 0.89) (n=14)−0.15 (−0.64 to 0.35) (n=28)0.17 (−0.12 to 0.46) (n=69)0.04 (−0.24 to 0.33) (n=87)0.08 (−0.10 to 0.25) (n=198)0.8820.53 (0.37 to 0.68) (n=143)−0.45
(−0.70 to −0.20)
<0.001
Weight z-score0.60 (−0.22 to 1.42) (n=15)0.24 (−0.25 to 0.73) (n=28)0.16 (−0.15 to 0.46) (n=69)0.11 (−0.16 to 0.38) (n=87)0.18 (0.00 to 0.36) (n=199)0.3340.61 (0.43 to 0.78) (n=142)−0.42
(−0.68 to −0.17)
0.001
BMI z-score0.91 (0.23 to 1.59) (n=14)0.40 (−0.12 to 0.92) (n=28)0.03 (−0.30 to 0.36) (n=69)0.11 (−0.16 to 0.38) (n=87)0.18 (−0.00 to 0.36) (n=198)0.1080.43 (0.24 to 0.63) (n=142)−0.26
(−0.53 0.02)
0.065
Head circumference z-score−1.57 (−2.44 to −0.70) (n=15)−1.60 (−2.17 to −1.03) (n=28)−1.56 (−1.87 to −1.25) (n=63)−1.15 (−1.46 to −0.84) (n=85)−1.38 (−1.58 to −1.18) (n=191)0.040−0.34 (−0.55 to −0.12) (n=142)−1.05
(−1.35 to −0.75)
<0.001
  • *This refers to P values for the associations of gestational age with growth parameters using linear regression with gestational age in weeks and days.

  • EP, extremely preterm.