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Table 3 Association between gestational age and body fat indicators

From: Prematurity and body composition at 6, 18, and 30 years of age: Pelotas (Brazil) 2004, 1993, and 1982 birth cohorts

 

FM (kg)

%FM

FMI (kg/m2)

BMIa (kg/m2)

β (CI95%)

β (CI95%)

β (CI95%)

β (CI95%)

Gestational age

Crude

Adjusted

Crude

Adjusted

Crude

Adjusted

Crude

Adjusted

Male

6 y (2004 Cohort)

p < 0.001

p = 0.046

p < 0.001

p = 0.008

p < 0.001

p = 0.004

p < 0.001

p < 0.001

   ≤ 33

− 1.29 (−2.50; − 0.09)

0.22 (− 1.06; 1.51)

− 2.72 (−5.31; − 0.14)

− 0.67 (− 3.64; 2.30)

− 0.76 (− 1.47; − 0.06)

− 0.54 (− 1.38; − 0.31)

− 0,76 (− 1.26; − 0.26)

− 0.78(− 1.36; 0.20)

  34 to 36

− 0.97 (− 1.54; − 0.39)

− 0.80 (− 1.45; − 0.16)

− 2.32 (− 5.31; − 0.14)

−2.39 (− 3.90; − 0.88)

− 0.57 (− 0.91; − 0.23)

−0.70 (− 1.13; − 0.27)

−0.60 (− 0.84; − 0.36)

−0.69 (− 0.99; − 0.40)

  37 to 41

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18 y (1993 Cohort)

p = 0.873

p = 0.469

p = 0.711

p = 0.461

p = 0.938

p = 0.754

p = 0.839

p = 0.951

   ≤ 33

−0.36 (− 3.75; 3.02)

−0.94 (− 4.81; 2.93)

− 1.16 (− 4.26; 1.94)

− 1.57 (− 4.73; 1.59)

−0.10 (− 0.63; 0.44)

−0.31 (− 1.25; 0.63)

0.02 (− 1.45; 1.48)

0.10 (− 1.75; 1.96)

  34 to 36

−0.41 (− 2.08; 1.25)

0.59 (− 1.19; 2.38)

−0.32 (− 1.84; 1.20)

0.59 (− 1.05; 2.24)

− 0.01 (− 1.10; 1.08)

0.09 (− 0.40; 0.57)

− 0.22 (− 0.95; 0.51)

−0.11 (− 0.87; 0.64)

  37 to 41

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30 y (1982 Cohort)

p = 0.053

p = 0.102

p = 0.013

p = 0.085

p = 0.037

p = 0.114

p = 0.290

p = 0.319

   ≤ 33

13.53 (2.20; 24.87)

15.67 (0.25; 31.09)

13.13 (4.24; 22.0)

13.52 (1.17; 25.87)

4.59 (0.96; 8.22)

5.11 (0.09; 10.13)

3.68 (− 1.17; 8.54)

3.98 (− 2.64; 10.61)

  34 to 36

−0.62 (− 2.64; 1.40)

−0.78 (− 2.86; 1.29)

−0.46 (− 2.04; 1.12)

−0.46 (− 2.10; 1.19)

−0.21 (− 0.85; 0.44)

−0.19 (− 0.86; 0.47)

−0.21 (− 1.08; 0.65)

−0.42 (− 1.31; 0.47)

  37 to 41

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Female

6 y (2004 Cohort)

p = 0.002

p = 0.539

p = 0.001

p = 0.442

p = 0.003

p = 0.113

p = 0.004

p = 0.116

   ≤ 33

−1.01 (− 2.34; 0.33)

−0.16 (− 2.00; 1.69

− 1.54 (− 3.58; − 1.02)

−0.86 (− 5.04; 3.31)

−0.44 (− 1.25; 0.37)

−0.49 (− 0.99; 0.00)

−0.21 (− 0.68; 0.27)

−0.31 (− 1.03; 0.42)

  34 to 36

−1.06 (− 1.69; − 0.44)

−0.40 (− 1.12; 0.31)

− 2.30 (− 4.29; 1.20)

−1.03 (− 2.66; 0.60)

−0.63 (− 1.01; − 0.26)

−0.57 (− 1.85; 0.71)

−0.32 (− 0.54; − 0.10)

−0.28 (− 0.56; 0.00)

  37 to 41

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18 y (1993 Cohort)

p = 0.666

p = 0.554

p = 0.519

p = 0.418

p = 0.710

p = 0.442

p = 0.746

p = 0.440

   ≤ 33

−1.34 (− 4.27; 1.58)

− 1.53 (− 4.39; 1.34)

−1.41 (− 3.83; 1.01)

−1.52 (− 4.07; 1.04)

−0.47 (− 1.58; 0.65)

− 0.62 (− 1.66; 0.43)

−0.40 (− 1.89; 1.09)

−0.76 (− 2.10; 0.58)

  34 to 36

− 0.05 (− 1.74; 1.65)

0.20 (− 1.46; 1.85)

− 0.13 (− 1.53; 1.28)

0.37 (− 0.97; 1.72)

0.02 (− 0.63; 0.66)

0.14 (− 0.46; 0.74)

0.23 (− 0.63; 1.10)

0.22 (− 0.55; 1.00)

  37 to 41

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30 y (1982 Cohort)

p = 0.401

p = 0.535

p = 0.262

p = 0.369

p = 0.426

p = 0.569

p = 0.434

p = 0.459

   ≤ 33

−4.10 (− 14.76; 6.56)

− 2.59 (− 12.73; 7.54)

−0.37 (− 7.82; 7.09)

0.18 (− 6.95; 7.32)

−1.39 (− 5.43; 2.65)

− 1.06 (− 4.92; 2.81)

−2.55 (− 7.80; 2.70)

−2.29 (− 7.32; 2.74)

  34 to 36

−1.17 (− 3.17; 0.84)

−1.07 (− 3.16; 1.01)

−1.17 (− 2.57; 0.23)

−1.04 (− 2.50; 0.41)

−0.44 (− 1.20; 0.32)

−0.37 (− 1.16; 2.81)

−0.45 (− 1.44; 0.54)

−0.49 (− 1.57; 0.59)

  37 to 41

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  1. FM fat mass, %FM percentage of fat mass, FMI fat mass index, BMI body mass index
  2. aAt 6 years, BMI in Z-score
  3. β refers to linear regression models. Models were adjusted for maternal (education, age, family income at birth, smoking during pregnancy, and pre-gestational BMI) and the cohort participant characteristics (birth weight