Table 4:

Association between the tertile of rate of change in maternal anthropometry in the third trimester (28–40wks) and neonatal anthropometry^†

	Neonatal Anthropometry
Maternal Anthropometry	Lean Mass (g) β (95% CI)	Fat Mass (g) β (95% CI)	Fat Percent (%) β (95% CI)	Birthweight (g) β (95% CI)
Mid-Upper Arm Circumference (mm/week)
−2.37 to 0.22	16.0 (−14.6, 46.6)	−9.05 (−27.2, 9.17)	−0.21 (−0.63, 0.23)	12.6 (−30.6, 55.7)
0.22 to 0.56	Reference	Reference	Reference	Reference
0.57 to 3.276	−22.8 (−53.0, 7.46)	−8.72 (−26.7, 9.26)	−0.13 (−0.56, 0.29)	−26.7 (−69.4, 15.8)
Subscapular Skinfold (mm /week)
−0.17 to 0.06	25.5 (−5.82, 56.9)	6.75 (−12.0, 25.5)	0.15 (−0.29, 0.59)	33.9 (−10.3, 78.3)
0.07 to 0.12	Reference	Reference	Reference	Reference
0.13 to 0.54	4.54 (−27.7, 36.8)	2.21 (−17.1, 21.5)	0.03 (−0.42, 0.48)	12.8 (−32.8, 58.5)
Triceps Skinfold (mm /week)
−0.57 to −0.06	35.8 (5.64, 65.9)*	10.02 (−8.00, 28.1)	0.18 (−0.24, 0.61)	35.9 (−6.66, 78.6)
−0.05 to 0.06	Reference	Reference	Reference	Reference
0.07 to 0.63	−4.78 (−35.3, 25.7)	0.34 (−17.9, 18.5)	0.09 (−0.33, 0.52)	−7.52 (−50.8, 35.7)
Weight Change (kg/week)
−0.37 to 0.52	−54.1 (−84.8, −23.5)*	−36.4 (−54.6, −18.2)*	−0.77 (−1.20, −0.34)*	−85.6 (−128.1, - 42.7)*
0.51 to 0.71	Reference	Reference	Reference	Reference
0.72 to 1.73	25.1 (−5.00, 55.2)	23.6 (5.70, 41.5)*	0.45 (0.03, 0.87)*	54.5 (12.1, 97.0)*
Net Weight Change‡ (kg/week)
−0.06 to 0.04	−14.7 (−45.5, 16.1)	−14.8 (−33.2, 3.59)	−0.30 (−0.73, −0.13)*	−25.3 (−68.7, 18.1)
0.041 to 0.06	Reference	Reference	Reference	Reference
0.061 to 0.18	15.1 (−15.4, 45.3)	19.4 (1.30, 37.5)*	0.42 (−0.004, 0.85)	40.8 (−2.05, 83.7)

^*P<0.05

^†Values are beta coefficients (95% CI); adjusted for race, infant sex, parity, age, height, pre-pregnancy BMI, gestational age at delivery, and neonatal measurement date, and baseline anthropometry value; Neonatal lean mass, fat mass, and fat percent (n=1698), Birthweight (n=1759)

^‡Calculated as the difference between maternal weight and estimated fetal weight