Figure 1.

Discharges with ICD-9 codes consistent with reflux. There were 1,568 discharges, 472 were excluded because no diagnosis of reflux was made before 12 months of age. A total of 1,096 charts were included in the review. Of the charts reviewed, 514 were from children born ≥ 37 weeks gestation, 519 were from children born at < 37 weeks gestation. No birth data was recorded for 53.