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Table 2 Co-morbidities noted on admission with occurrence of > 1% in first year of life

From: Gastro-oesophageal reflux: a mixed methods study of infants admitted to hospital in the first 12 months following birth in NSW (2000–2011)

ICD-10-AM code Definition % of admissions with GOR/GORD % of admissions without GOR/GORD p
P07.22 Extreme immaturity 24 or more completed weeks but less than 28 completed weeks 1.1% 0.1% < 0.000
P07.31 Other preterm infant, 28or more completed weeks but less than 32 completed weeks 1.5% 0.3% < 0.000
P22.0 Respiratory distress syndrome of newborn 1.6% 1.0% < 0.000
J21.9 Acute bronchiolitis, unspecified 2.0% 1.05 < 0.000
R06.8 Other and unspecified abnormalities of breathing 3.0% 0.1% < 0.001
R62.8 Other lack of expected physiological development 3.8% 0.1% < 0.000
R63.3 Feeding difficulties and mismanagement 9.8% 0.2% < 0.000
F51.2 Non-organic disorder of the sleep wake schedule 10.2% 0.1% < 0.000
R68.1 Nonspecific symptoms peculiar to infancy – excessive crying, irritable infant 38.1% 0.6% < 0.000