Writing from the workbench

Notes on statistical modelling, research software, public data questions, and project-adjacent thinking.

Public-interest data / models / software

Writing from the workbench.

Notes that are too developed to stay in a scratch file and too alive to pretend they are finished. Expect statistical modelling, public-interest and public-health data, research software, workflow, and the occasional attempt to think clearly in public.

Browse posts Main site GitHub

models software data drafts

Notebook map Working notes, small essays, and project-adjacent thinking.

Latest

Posts

The Australian Data Review notes now live here alongside the broader workbench blog. Most data posts should be read as public drafts unless they explicitly say otherwise.

Sydney’s Housing Weakness Was Deepest in Expensive Houses

Sydney’s established-house median fell 4.0% in the June quarter, versus 1.8% for attached dwellings. Higher-value houses had fallen further from peak; the rest was less weak, not rising.

A $51.5 Billion NDIS Should Show What Outcomes It Delivers

Participants report some gains. But public reporting still cannot show which supports produced them—or what outcomes the Scheme’s $51.5 billion annual spend is delivering.

Bulk Billing Rose After November 2025. Did GP Access Improve?

Billing changed sharply after the November 2025 GP incentives, especially for working-age adults. The evidence for more care is much weaker.

Nominal NDIS Cash Payments Reached $51.5 Billion

Trailing-12-month nominal cash-basis NDIS payments rose across every quarterly release from September 2024 to June 2026. Participant growth explains some of the scale, but the public aggregates do not provide an exact causal decomposition.

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      Notes that are too developed to stay in a scratch file and too alive to pretend
      they are finished. Expect statistical modelling, public-interest and public-health
      data, research software, workflow, and the occasional attempt to think clearly in public.
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      <a class="button" href="https://github.com/ahibbert">GitHub</a>
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      The Australian Data Review notes now live here alongside the broader workbench
      blog. Most data posts should be read as public drafts unless they explicitly say
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