Technical The instrument and its cut-offs
PGSI: nine items from the Canadian Problem Gambling Index (Ferris & Wynne, 2001), 0–3 scale, 0–27 total. Published bands: 0 no risk · 1–2 low risk · 3–7 moderate risk · 8 or more problem gambling. It is a population screening tool: it ranks risk, it does not diagnose. The score and the heaviest items are computed in src/lib/pgsi.ts, covered by tests.