One in three mothers had a prior miscarriage, AIHW finds

By Rosa Henriquez · 2026-08-02

The numbers

Thirty per cent of women who gave birth in 2022 had previously experienced at least one miscarriage, and 10 per cent had experienced two or more.^[1] Those are the headline figures from a scoping study the Australian Institute of Health and Welfare released on 29 July 2026, and they land harder than the numbers many clinicians and policymakers have been working from.

Earlier Australian estimates put pregnancy loss at between one in four and one in five pregnancies among women who have ever been pregnant.^[1] The new analysis, the first of its kind at this scale using linked administrative records, puts that share closer to one in three among women who went on to deliver a live birth. The gap between old estimates and new figures is not small, and it matters for how the health system plans services, trains clinicians, and funds bereavement support.

What the study examined

The AIHW scoping study examined available national data on pregnancy loss before 20 weeks' gestation.^[1] Researchers analysed records from five states and territories to understand prevalence and care patterns among women who later gave birth. The study does not capture women who experienced pregnancy loss and did not subsequently deliver, meaning the true population-level burden could be higher still.

Linked perinatal data, hospital records and other administrative collections were used to build a picture that has never previously been assembled at this scale in Australia. The reliance on only five jurisdictions reflects a structural problem rather than a methodological choice: consistent, nationally collected data simply does not exist anywhere else.

A system that is not counting

There is no routine national collection of pregnancy loss data in Australia, leaving significant gaps in the understanding of both prevalence and care.^[1] That absence is not a minor administrative oversight. Clinicians, researchers and policymakers are making decisions about service design and resource allocation on the basis of incomplete, inconsistent, and in some cases very old information.

AIHW spokesperson Deanna Eldridge said pregnancy loss is a deeply personal experience that touches the lives of many women and families, and that gaps in national data on pregnancy loss prevalence and care mean there is still much to learn about these experiences.^[1]

Without a consistent national collection, it is not possible to track whether rates of pregnancy loss are changing over time, whether certain groups face higher risk, or whether the care provided to women who miscarry varies by geography, age or socioeconomic status. Health advocates have warned that shortfall may be concealing unmet needs among young people experiencing pregnancy loss.

The daily scale of loss

About one in four confirmed pregnancies ends in miscarriage in Australia, equating to approximately 285 miscarriages every day.^[2] That is roughly 104,000 a year, affecting families across every suburb, town and region in the country, yet no unified system records the experiences of those who go through it.

The AIHW study adds a layer to that picture by focusing not on confirmed pregnancies broadly but on the history of women who ultimately delivered. The 30 per cent figure refers specifically to that cohort, making it a more precise measure of cumulative loss among people who navigated the health system through to a live birth.^[1] For the 10 per cent who had two or more prior miscarriages, the experience is one of repeated grief alongside a pregnancy that eventually succeeded, a combination that carries its own distinct psychological and clinical weight.

Stigma, silence and the case for speaking openly

Miscarriage has historically been treated as something to manage privately, a convention that has contributed both to underreporting in health records and to a broader cultural reluctance to discuss the experience openly. That silence has practical consequences: it shapes whether women seek care, how long they wait to do so, and whether they connect with support services at all.

The AIHW study's release coincides with a broader shift in public conversation around pregnancy loss in Australia, with more women choosing to speak openly about their experiences. Women who feel the experience is recognised are more likely to disclose previous losses to clinicians, improving the accuracy of clinical histories and, over time, of administrative data collections.

What needs to change

The AIHW study is framed as a scoping exercise, meaning its primary purpose was to map what is known, what can be measured, and where the gaps lie. Its findings make the case for a national data collection framework that goes beyond the patchwork of five-jurisdiction records the current study relied on.^[1] Whether government moves to fund and implement such a framework is a separate question the study does not answer.

The AIHW analysis does establish, with more precision than any previous national study, how common pregnancy loss is among Australian mothers: one in three had been through it before delivering in 2022.

Rosa Henriquez

Rosa Henriquez writes about the cost of living and consumer affairs. She reports from the household end of the economy, where the numbers turn into groceries and bills.