Table 3

Multivariate linear regression: BMI and central SBP at 19 years as dependent variables in young adults born extremely preterm*

BMI (kg/m2)Central SBP (mm Hg)
β (95% CI) † p valueβ (95% CI)† p value
Birthweight z-score (SD)−0.54 (−1.58 to 0.50)0.305−0.69 (−2.49 to 1.11)0.448
∆ weight z-score from birth to term-age (SD)0.30 (−0.46 to 1.06)0.4380.08 (−1.28 to 1.44)0.907
∆ weight z-score from term-age to 2.5 years (SD)0.18 (−0.33 to 0.69)0.4820.19 (−0.74 to 1.12)0.687
∆ weight z-score from 2.5 to 6.0 years (SD)1.03 (0.31 to 1.75)0.006*1.75 (0.48 to 3.02)0.007‡
∆ weight z-score from 6 to 11 years (SD)0.98 (0.02 to 1.93)0.0460.13 (−1.60 to 1.86)0.882
  • Adjusted p values: 0.030 for BMI and 0.035 for central SBP.

  • *+Adjusted for sex, maternal age and maternal smoking during pregnancy.

  • †β presents the average change in BMI and central SBP for per SD change in birthweight z-scores or in ∆ weight z-scores in different periods.

  • ‡Correction for multiple comparisons was applied using the Benjamini-Hochberg procedure, and a false discovery rate of 0.05 was chosen.

  • BMI, body mass index; SBP, systolic blood pressure.