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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Arch Dis Child Fetal Neonatal Ed. 2019 Nov 4;105(4):399–404. doi: 10.1136/archdischild-2019-317148

Figure 2. Primary outcome results for the individual patient and pooled analyses (shaded box).

Figure 2.

Incidence rate ratios (IRR) calculated using mixed effects negative binomial regression. A dichotomous variable distinguishing treatment blocks 1 and 2 was included in each model to account for temporal variation in disease severity over time. IRR values indicate the average relative increase (IRR >1) or decrease (IRR<1) in the daily number of intermittent hypoxemic events with transpyloric compared to gastric feedings. Stars (*) show the approximate timepoints these infants were removed from the intervention portion of the trial and transpyloric feedings were administered thereafter. All study participants received gastric feedings run continuously when this feeding route was assigned except for infants no 12 and 14 who received bolus gastric feedings after the first 24 hours of each gastric feeding period. CI, confidence interval.