A single congestion item by itself is a statistically and substantively significant predictor of patient-relevant outcomes. Although the sample was not randomly drawn from clinics or physician offices, the consistency and strength of the findings suggest the salience of this single symptom for patients' experiences.
No takes yet. Share an insight, caveat, or question.
Stull et al. (2007) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: