Table 3 Intercorrelations among PCS scores, Brief PCS scores, and scores on PROMIS® measures (validation sample).

From: Establishing the interpretability and utility of the 4-item BriefPCS

 

n

PCS

BriefPCS

r

95% CI

r

95% CI

PCS

 

N/A

  

0.947

0.945

0.949

Average pain ratings

10,612

0.413

0.393

0.432

0.400

0.381

0.420

PROMIS

 Pain interference

10,472

0.554

0.537

0.570

0.538

0.521

0.555

 Upper extremity

7457

− 0.325

− 0.346

− 0.303

− 0.304

− 0.325

− 0.283

 Mobility

7443

− 0.308

− 0.328

− 0.286

− 0.295

− 0.317

− 0.273

 Depression

10,332

0.599

0.582

0.615

0.559

0.542

0.575

 Anxiety

10,307

0.587

0.570

0.603

0.556

0.538

0.572

  1. Bootstrap with 5000 resampling, all p values < 0.001. PCS the 13-item Pain Catastrophizing Scale, BriefPCS the 4-item PCS.
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