This symptom assessment tool measures six items on 5-point scales. Average time to complete: 1.6 minutes. Interpretation and scoring: Calculate total score as [(sum of items x 6) ÷ number items answered]. The higher the total score, the more severe the symptom. The minimally important difference (MID) of the total score for a nine-item PROMIS anxiety tool is estimated at 3–4.5 (Yost, 2011), suggesting a 30% difference as clinically meaningful. Multiple translations are available. Some PROMIS forms are imbedded in electronic systems. Browse additional information and resources.