Federal statutory agency · Commonwealth · Prevalence research
Complete · 2026
A national prevalence survey designed to a ±1.4% margin of error.
A population-scale study of a sensitive experience, for an audience where a badly-worded question does real harm. We designed the sampling frame, the instrument, the consent flow, the survey platform and the 1800 support line as one thing, because on a study like this they cannot be separated.
5,000
Target sample
±1.4%
Margin of error
12
Infographic variants
Federal statutory agency · 2026
The problem
A defensible number, from people it costs something to ask.
A national figure needs a sampling frame and a margin of error that will survive scrutiny. The people who supply it are answering questions about the worst thing that has happened to them, on a screen, alone.
Our approach
Validated instruments, skip-logic that protects, help one tap away.
PCL-5, K10, C-SSRS and AUDIT-C chosen for this population rather than repurposed, co-designed with lived-experience advisors, with opt-out on every screen and a trauma-informed 1800 line under clinical supervision.
What we delivered
- n=5,000 target design at a ±1.4% margin of error
- Validated instruments — PCL-5, K10, C-SSRS, AUDIT-C
- Sovereign AWS Sydney sole-tenant survey platform
- Trauma-informed 1800 line with weekly clinical supervision
- Twelve-piece infographic suite plus a plain-English summary
- WCAG-conformant survey with an independent accessibility audit

