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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