– Predicts chronic disability based on:
• Age
• Initial neck and arm pain
• Dizziness
• Psychological markers (e.g., hyperarousal)
• Emerging; validated in cohort studies but needs broader testing


Reference:

Walton DM, Carroll LJ, Kasch H, et al. An overview of systematic reviews on prognostic factors in neck pain: results from the ICON project. Open Orthop J. 2013;7:494–505.