PHQ-15 and SSD-12 1-Week Versions Support Clinical Symptom Tracking
A 2026 psychometric study of 354 Swedish participants found that 1-week versions of the PHQ-15 and SSD-12 mostly preserved internal consistency and construct validity, but reliability was acceptable mainly in clinical participants or when researchers averaged 2 timepoints. Research Highlights Clinical tracking looked more defensible than healthy screening: Hybelius et al. studied 194 people with …