Table 3.

Association of infant gut microbiota composition with neonatal 42-day and 6-month weight gain rates.

	Birth weight(g)a		42 days weight gain rate(g/d)b		6 months weight gain rate(g/d)b
	β (95% CI)	P value	β (95% CI)	P value	β (95% CI)	P value
ART
Diversity: Simpson	138.93 (−159.99,437.86)	3.64 × 10−01	−10.98 (−18.33,-3.63)	4.13 × 10−03	−0.52 (−3.96,2.93)	7.69 × 10−01
Bacteroidetes abundance	692.53 (−339.21,1724.28)	1.91 × 10−01	−56.35 (−80.67,-32.04)	1.42 × 10−05	−17.10 (−28.66,-5.54)	4.54 × 10−03
Spontaneous
Diversity: Simpson	−241.72 (−635.71,152.28)	2.33 × 10−01	−7.18 (−17.47,3.12)	1.75 × 10−01	−3.38 (−7.76,1.01)	1.35 × 10−01
Bacteroidetes abundance	−58.05 (−718.95,602.85)	8.64 × 10−01	−39.22 (−54.20,-24.24)	1.83 × 10−06	−16.20 (−22.50,-9.90)	2.89 × 10−06

^aLinear regression adjusted for gestational age, maternal BMI, and infant gender.

^bLinear regression adjusted for gestational age, infant gender, birth weight, and feeding method.