Background
Patient-reported outcomes (PROs) (e.g., symptoms, functioning) can inform patient management. However, patients and clinicians often have difficulty interpreting score meaning. We tested approaches for presenting PRO data to improve interpretability.
Methods
This mixed-methods study included an internet survey of cancer patients/survivors, oncology clinicians, and PRO researchers circulated via snowball sampling, plus individual in-person interviews. Clinical importance was conveyed using three approaches (presented in random order): normal score range shaded green, red-circled concerning scores, and threshold-line indicating normal vs. concerning scores. Versions also tested two approaches to score directionality: higher=more (better for function, worse for symptoms) and higher=better for both function and symptoms. Qualitative data from online comments and in-person interviews supplemented quantitative results on interpretation accuracy, clarity, and the “most useful” format.
Results
The survey included 1113 respondents: 627 survivors, 236 clinicians, and 250 researchers, plus 10 patient and 10 clinician purposively-sampled interviewees. Interpretation accuracy ranged from 53%–100%. Formats where higher=better were interpreted more accurately versus higher=more (OR=1.30; 95% CI=1.07–1.58), and were more likely to be rated “very”/“somewhat” clear (OR=1.39; 95% CI 1.13–1.70) and “very” clear (OR=1.36; 95% CI 1.18–1.58). Red-circles were interpreted more accurately than green-shading when the first format seen (OR=1.29; 95% CI=1.00–1.65). Threshold-line formats were more likely to be rated “very” clear than green-shading (OR=1.43; 95% CI=1.19–1.71) and red-circles (OR=1.22, 95% CI=1.02–1.46). Threshold-lines were most often selected as “most useful.”
Conclusions
These results support presenting PRO data with higher=better directionality and threshold-lines indicating normal vs. concerning scores.