Table 6 Multiple regression analysis of the association of participant characteristics with their visual analog scores

Constant

107.316

11.140

9.633

.000

85.335

129.296

Gender

1.846

2.268

0.047

0.814

0.417

−2.629

6.321

1.357

Age

−0.820

2.781

−0.017

− 0.295

0.768

−6.306

4.667

1.343

Educational level

0.837

0.782

0.062

1.070

0.286

−0.706

2.380

1.364

Occupation

1.502

0.855

0.106

1.757

0.081

−0.184

3.189

1.470

Trauma

−6.686

2.429

−0.164

−2.753

0.007

−11.478

−1.894

1.441

Pain medications

−2.243

1.304

−0.092

−1.721

0.087

−4.815

0.329

1.155

Number of affected joints

−4.737

1.506

−0.170

−3.146

0.002

−7.708

−1.766

1.188

Duration of disease

−1.603

1.478

−0.062

−1.085

0.279

−4.519

1.312

1.337

Number of comorbidities

−2.922

1.078

−0.159

−2.710

0.007

−5.050

−0.795

1.397

Pain severity

−4.514

1.687

−0.182

−2.676

0.008

−7.841

−1.186

1.882

Pain interference

−9.264

2.614

−0.228

−3.543

0.001

−14.422

−4.106

1.683

Percentage of relief by drugs

2.333

1.825

0.077

1.279

0.203

−1.267

5.934

1.477