Table 3 Associations between being in the worse half of SF-36 subscales and the different pain groups controlled for age, gender and having or not having radiographic knee OA at 20-year follow-up in a cohort with chronic knee pain at inclusion

Age

1.098

1.014–1.189

1.031

0.952–1.115

0.962

0.886–1.044

1.041

0.962–1.126

Gender (Women)

1.542

0.618–3.845

0.840

0.339–2.084

1.238

0.476–3.220

0.688

0.275–1.723

Knee OA

1.536

0.627–3.764

1.420

0.581–3.471

0.883

0.344–2.264

1.064

0.434–2.613

NCP

1

1

1

1

CRP

4.080

1.248–13.342

7.736

2.153–25.269

20.056

4.071–98.795

2.370

0.792–6.234

CWP

9.391

2.491–35.400

11.654

2.854–41.544

45.482

6.413–185.387

13.348

3.467–51.396

OR

95% CI

OR

95% CI

OR

95% CI

OR

95% CI

Age

1.005

0.933–1.082

1.014

0.943–1.091

0.996

0.918–1.081

1.095

1.008–1.190

Gender (women)

1.208

0.513–2.844

0.750

0.320–1.759

1.223

0.483–3.095

2.140

0.837–5.470

Knee OA

0.887

0.378–2.081

1.049

0.452–2.438

1.540

0.597–3.971

1.284

0.512–3.217

NCP

1

1

1

1

CRP

3.707

1.171–11.741

2.608

0.831–8.190

1.089

0.322–3.681

4.260

1.292–14.044

CWP

6.560

1.897–22.686

4.036

1.196–13.612

2.235

0.648–7.705

12.238

3.131–47.830