TABLE 3.

Mixed Effects Model: Factors Contributing to Gini-Simpson Diversity Index (α-Diversity)^a

Effect	Estimate	(SE)	p
Time interval
0–10 days	−0.24	(0.07)	<.001
11–20 days	−0.14	(0.03)	<.0001
21–30 daysb
Covariates
MOM	0.23	(0.07)	<.001
Gender (female)	0.14	(0.05)	.01
Antibiotic use (days)	−0.13	(0.07)	.07
PROM	0.05	(0.05)	.38
Weight (g)	0.00	(0.00)	.63
HMF	0.00	(0.06)	.98
Birth GA (weeks)	−0.01	(0.02)	.76

Note. N = 33. GA = gestational age; HMF = human milk fortifier; MOM = mother’s own breastmilk feeding; PROM = premature rapture of membranes.

^aArcsine transformed.

^bReferent category.