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Table 3 Identification of variables for unlinked hospital records

From: Investigating linkage rates among probabilistically linked birth and hospitalization records

Group

Description

ICD10-AM/ACHI codes

Infants

Preterm birth

P07.2, P07.3

 

Apgar1 < 4

P20.1

Mothers

Diabetes

O24, E10, E11, E13, E14

 

Hypertension

O10, O11, O13-O16

 

Induction

90465

 

Caesarean section

O82, Procedures: 16520

 

Placenta praevia

O44.1

 

Placental abruption

O45

 

Duration of pregnancy < 25 weeks

O90.1, O90.2, O90.3

Singleton

 

Z37.0-Z37.1, Z38.0-Z38.2, O80-O83

Multiple births

 

Z37.2-Z37.7, Z38.3-Z38.8, O84

Stillbirth

 

Z37.1, Z37.3, Z37.4, Z37.6, Z37.7

  1. ICD10-AM diagnosis codes from the International Classification of Disease Version 10, Australian Modification.
  2. ACHI procedure codes from the Australian Classification of Health Interventions.
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BMC Medical Research Methodology

ISSN: 1471-2288

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