Table 2.
Milk Type | Number of Infants by Milk Type n (%) | Mean LOSa Days (95% CI) | Unadjusted IRR (95% CI)b | p | Adjusted IRR (95% CI)b,c | p |
---|---|---|---|---|---|---|
Breastfeeding Only | 27 (14.8%) | 2.58 (2.33-2.83) | REFERENCE | REFERENCE | ||
Breastfeeding Supplemented with EHM or PDHM | 20 (10.9%) | 2.95 (2.56-3.35) | 1.46 (1.23-1.73) | <0.001 | 1.14 (0.96-1.37) | 0.14 |
Breastfeeding with Any Formula Supplementationd | 93 (50.8%) | 2.86 (2.71-3.00) | 1.23 (1.12-1.36) | <0.001 | 1.11 (1.00-1.23) | 0.06 |
Formula Only | 43 (23.5%) | 3.19 (2.92-3.45) | 1.34 (1.18-1.52) | <0.001 | 1.23 (1.09-1.40) | 0.001 |
Note. EHM = expressed human milk; PDHM = pasteurized donor human milk.
Predicted mean length of stay (LOS) calculated using Generalized Poisson regression models adjusted for maternal age, race, medical insurance, parity, cesarean section, gestational age, maternal hypertension, physician orders for supplementation and hyperbilirubinemia.
IRR = Incidence Rate Ratio calculated using modified Poisson regression, CI = 95 % Confidence Interval
Modified Poisson regression model controlling for maternal age, race, medical insurance, parity, cesarean section, gestational age, maternal hypertension, physician orders for supplementation and hyperbilirubinemia.
Breastfeeding with any formula supplementation includes formula supplementation only and formula supplementation plus EHM or PDHM.