Evid Based Nurs 1:20 doi:10.1136/ebn.1.1.20
  • Causation

Many perinatal factors increased the risk of developmental dysplasia of the hip


To determine perinatal risk factors for developmental dysplasia of the hip (DDH).


Case control study.


A community based study in South Australia.


1127 children who were born from 1986–93 and had DDH were compared with 150 130 children who did not have DDH and were born during the same time period. Children with major abnormalities were excluded.

Assessment of risk factors

Data from state birth records were used to ascertain mother's age, race, country of birth, medical conditions, obstetric complications, parity, presentation and method of delivery, sex of baby, region of residence, oligohydramnios, birth weight, gestation, and plurality.

Main outcome measures

Development of DDH. Data were reported as odds ratios (ORs) …

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