FAQ
Common questions about PrevIQ data, methodology, and usage.
Why are PrevIQ's rates lower than our old spreadsheets?
Because PrevIQ divides by all tested specimens, not just panel-positive ones. The all-tested denominator is the clinically honest one and is more defensible with payers. See Prevalence methodology.
What does a Tier C row mean — can I use it?
Tier C means fewer than 30 specimens. It's shown for exploration but is not clinically reportable, and it's always classified RARE for panel design. Don't base decisions on it, no matter how high the rate looks. See Sample-size tiers.
Why is the same organism listed under more than one syndrome?
Because prevalence is computed within each panel/syndrome and never blended. The organism genuinely has different rates in different clinical contexts. See Key concepts.
What's the difference between 'specimens' and 'records'?
A specimen is one patient sample; it produces many organism-result records (one per organism on its panel). PrevIQ estimates specimen counts per panel so headline numbers reflect specimens, not raw cells. See the Glossary.
How are INCLUDE / WATCH / RARE decided?
INCLUDE = rate ≥ 5% with a reportable sample; WATCH = rate ≥ 1% with a reportable sample; RARE = everything else, including all Tier C. See Panel classifications.
Is the CDC data part of my prevalence?
No. CDC RESP-NET is public hospitalization surveillance shown as context only. It is never combined into your prevalence denominators. See Geo.
How fresh is the data?
The data status panel shows the last ingestion time. New exports are added through ingestion; re-loading the same file is safe (it's skipped automatically). See Data & freshness.
Can I get the data into my own systems?
Yes — use the API for live access or the exports for files (CSV, Excel, JSON).
Which confidence interval method does PrevIQ use?
The Wilson score 95% interval, which stays correctly bounded at small samples and extreme rates (unlike the textbook normal approximation). See Sample-size tiers.
A panel label looks like it's in the wrong syndrome. What do I do?
Flag it to your OSPRI contact. The panel→syndrome taxonomy is centrally maintained and is occasionally extended as new labels appear in data. See Syndromes & panels.
- Still stuck? — See the troubleshooting guide, or contact OSPRI.