Table 4. Body composition measures for term and preterm newborns in the Newborn Body Composition Study of the INTERGROWTH-21st Project.
| Preterm (n=91) | Term (n=928) | Adjusted mean differencea (95% CI) | |
|---|---|---|---|
| Gestational age, weeks | 36.0 (0.7) | 39.7 (1.2) | −3.7 (−3.8, −3.5) |
| Weight at examination, g | 2,501 (369) | 3,254 (509) | −693 (−777, −610) |
| Fat mass, g | 226 (124) | 348 (170) | −112 (−141, −84) |
| Percentage body fat, % | 8.6 (3.9) | 10.3 (4.0) | −1.5 (−2.3, −0.6) |
| Fat-free mass, g | 2,275 (278) | 2,906 (389) | −581 (−644, −519) |
| FM/FFM × 100 | 9.7 (4.7) | 11.7 (5.0) | −1.9 (−2.9, −0.8) |
CI, confidence interval; FFM, fat-free mass; FM, fat mass.
Data are mean (SD).
Preterm birth: <37 weeks’ gestation.
a
Mean difference between categories; adjusted by sex and age of examination (hours).