Accuracy for pain that interferes with functioning. The area
under the ROC curve for the pain screening NRS compared to
the primary reference standard (BPI interference≥5) was
0.76, indicating fair accuracy. Results were not substantially
different when the pain screening NRS was tested against
alternative BPI interference thresholds (area under curve
0.76–0.77).
The lowest possible cut point, a pain screening NRS score
of 1, was 69% sensitive (95% CI 60–78) and 78% specific
(95% CI 71–83) for functional interference. In other words,
nearly a third of patients with pain-related functional interference
had an NRS score of 0. The usual pain screening NRS
cut point, 4, was slightly less sensitive (64%, 95% CI 54–72)
with a specificity of 83% (95% CI 77–88)
Accuracy for pain that interferes with functioning. The areaunder the ROC curve for the pain screening NRS compared tothe primary reference standard (BPI interference≥5) was0.76, indicating fair accuracy. Results were not substantiallydifferent when the pain screening NRS was tested againstalternative BPI interference thresholds (area under curve0.76–0.77).The lowest possible cut point, a pain screening NRS scoreof 1, was 69% sensitive (95% CI 60–78) and 78% specific(95% CI 71–83) for functional interference. In other words,nearly a third of patients with pain-related functional interferencehad an NRS score of 0. The usual pain screening NRScut point, 4, was slightly less sensitive (64%, 95% CI 54–72)with a specificity of 83% (95% CI 77–88)
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