What problem does it solve?
It solves the problem of turning raw item responses from common clinical questionnaires into standardized severity scores and evidence-based pre-to-post change decisions using Reliable Change Index (RCI) and norm-style interpretation.
Core Features & Use Cases
- Questionnaire scoring with severity cutoffs: Scores PHQ-9, GAD-7, PCL-5, BDI-II, and SWLS from item-level data and assigns severity labels using published thresholds.
- Reliable Change Index (RCI) & clinical significance classification: Computes RCI using reliability (test-retest) and scale standard deviation assumptions, then classifies outcomes (Recovered, Improved, Unchanged, Deteriorated) with cutoff crossing logic.
- Missing-item prorating and longitudinal visualization: Handles up to a small number of missing items via prorated scoring and generates individual and group longitudinal trajectory plots for tracking outcomes over time.
Quick Start
Use the clinical-assessment Skill to batch-score PHQ-9 and GAD-7 item columns from your participant data, compute RCI for each person between two time points, and generate longitudinal trajectory plots of symptom change.