Eric Dein @ericdeinmd AI models require good Positive Predictive Value (PPV) But: PPV decreases as prevalence decreases - In choosing a successful biologic: Harder to predict more challenging patients (multiple failures, co-morbidities, etc) - ACR50 non-response is higher J… https://t.co/eAOR0jFmO3 https://t.co/TB6Ecd8nZh