Table 3

Comparing anthropometry and body composition between the 54 EP/ELBW children and their 54 age-matched and gender-matched term-born controls born year 1999–2000 in the Western Norway health region and examined in 2010–2011

Variables, unitsAllP value*FemalemP value†MalemP value‡
EP/ELBW (n=54) and TB (n=54)EP/ELBW (n=26) and TB (n=25)EP/ELBW (n=28) and TB (n=29)
MeanSDMeanSDMeanSDMeanSDMeanSDMeanSD
Birth weight, g8421753700434<0.00184216835543990<0.00184018438264310<0.001
Age at examination, years11.40.611.70.7<0.00111.60.711.80.60<0.00111.50.711.70.700.005
Height, cm146.78.0151.58.40.001146.67.2149.58.700.19146.98.7153.37.90<0.001
Height z-score−0.411.060.011.110.04−0.431.02−0.301.2800.68−0.400.110.270.8900.002
Weight, kg38.58.341.38.60.0737.57.241.19.5800.1739.49.341.37.8500.28
Weight, z-score−0.341.1−0.131.10.32−0.430.99−0.191.2000.47−0.251.17−0.080.9600.53
BMI, kg/m217.72.617.82.80.7917.32.418.33.500.3318.02.717.52.000.31
BMI, z-score−0.191.06−0.211.010.92−0.381.09−0.111.1200.47−0.021.01−0.300.9300.23
Waist circumference, mm65.38.166.37.60.5563.46.265.99.420.3067.29.366.75.650.68
Waist circumference, z-score0.231.020.291.040.74−0.080.970.061.3120.740.511.000.500.7050.92
Subscapular fold, mm8.74.08.64.30.878.03.19.54.950.239.34.57.73.550.13
Subscapular fold, z-score0.121.180.011.200.530.001.240.301.0650.390.231.15−0.251.2750.09
Triceps fold, mm11.34.112.34.10.2311.03.613.54.330.0411.64.611.33.750.06
Triceps fold, z-score−0.080.920.170.880.20−0.120.820.400.8130.03−0.060.99−0.030.9150.95
WHtR0.450.050.440.040.390.430.040.440.0620.670.460.050.440.0350.08
WHtR, z-score0.480.920.340.970.420.130.870.221.2420.870.810.850.440.6650.10
STR0.780.240.700.210.040.750.180.710.2150.450.810.270.690.2150.050
Fat mass, kg9.25.010.25.70.398.84.412.26.690.099.55.48.64.330.46
Total body fat, %26.09.026.29.80.9426.49.330.59.290.1625.88.922.68.930.20
Fat mass index, kg/m24.22.14.42.40.704.12.05.32.890.134.32.23.61.730.23
Fat mass ratio1.110.201.250.210.0011.100.191.210.25100.071.130.201.280.1640.004
Lean body mass, kg24.64.426.94.80.00323.33.325.74.290.05225.65.027.95.230.014
LBMI, kg/m211.31.111.61.20.2010.90.911.31.090.1611.71.111.81.230.51
ALM, kg12.02.313.42.50.00111.41.712.82.2120.05212.42.713.92.660.004
ALMI, kg/m25.50.65.80.60.025.30.55.60.6120.075.60.65.90.760.08
BMC, g109525912592990.0011064235123933290.061116277127427430.002
BMD, g/cm20.8090.0680.8630.077<0.0010.8100.0600.8620.08990.030.8080.0740.8640.0673<0.001
BMD, z-score−0.060.650.430.800.001−0.250.540.190.8390.070.070.700.630.7330.002
BMDth left, g/cm20.8380.0860.9040.1080.0010.8020.0690.8580.11490.060.8650.0890.9410.09030.003
BMDth left, z-score−0.060.730.441.030.004−0.510.46−0.100.9790.110.260.730.880.8630.013
BMDth right, g/cm20.8330.0820.9020.105<0.0010.8010.0720.8610.10590.040.8570.0810.9360.09430.002
BMDth right, z-score−0.110.710.391.000.004−0.520.52−0.120.9290.100.200.680.800.8830.012
BMD spine, g/cm20.8220.1010.8360.1000.450.8520.1010.8590.12490.850.7990.0970.8170.07330.39
BMD spine, z-score−0.060.69−0.130.880.70−0.240.71−0.351.0490.69−0.070.660.060.6830.99
  • *Mixed linear model (MLM).

  • †MLM comparing female EP/ELBW and TB.

  • ‡MLM comparing male EP/ELBW and TB.

  • ALM, appendicular lean mass;ALMI, appendicular lean mass index;BMC, bone mineral content;BMD, bone mineral density;BMDth, total hip bone mineral density;BMI, body mass index;EP/ELBW, extremely preterm born/extremely low birth weight;LBMI, lean body mass index;STR, subscapular- triceps skinfold ratio;TB, term born; WHtR, waist-to-height ratio; m, missing; Fat mass ratio, (arms+legs fat mass)/truncal fat mass.