Retrospective study on the 'sex ratio at birth' in Western Sydney Local Health District between 2011 and 2020.

ABSTRACT:

Objective

Sex selection is not permitted in Australia; however, there are indirect means for such selection to occur, for example, through sex identification and the early termination of pregnancy. Indirect evidence for such selection, if any, may be inferred from variations in the 'sex ratio at birth' (SRB) among different populations. This study aims to characterise the SRBs over 11 years in spontaneous and assisted births in the largely migrant population of Western Sydney.

Design

This is a retrospective cohort study.

Setting

Western Sydney Local Health District over three maternity hospitals.

Participants

A total of 109 931 births between 2011 and 2020, where gender was assigned at birth, were included in the study.

Primary and secondary outcomes

SUBMITTER: Perera C 

PROVIDER: S-EPMC12530412 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature