TABLE 2.
Associations of infant feeding with anthropometrics and body composition at 7 mo of age
| Outcome at 7 mo | Breastfed infants1 | Formula-fed infants1 | Adjusted difference between formula-fed and breastfed infants2 | P value3 |
| z Score | ||||
| Weight | −0.13 ± 0.07 | 0.19 ± 0.14 | 0.37 (0.04, 0.71) | 0.03 |
| BMI | 0.05 ± 0.08 | 0.63 ± 0.14 | 0.35 (0, 0.69) | 0.05 |
| Length | −0.28 ± 0.07 | −0.47 ± 0.12 | 0.05 (−0.24, 0.34) | 0.73 |
| Mass, g | ||||
| Lean | 5242 ± 51 | 5912 ± 81 | 303 (137, 469) | <0.001 |
| Fat | 2950 ± 59 | 2942 ± 113 | −42 (−299, 215) | 0.75 |
| Total | 8192 ± 74 | 8854 ± 144 | 355 (34, 675) | 0.03 |
| Body fat, % | 35.6 ± 0.5 | 32.7 ± 0.9 | −1.6 (−3.8, 0.6) | 0.15 |
1
Values are expressed as unadjusted means ± SEs for each feeding group.
2
Values are expressed as difference in formula-fed infants compared with breastfed infants, after adjustments in linear regression for sex, gestational age, initial body size and composition, race/ethnicity, maternal education level, insurance type, study site, and maternal BMI. Positive numbers indicate a larger size or higher mass in formula-fed infants.
3
P values are for the adjusted difference between formula-fed and breastfed infants.