Table 4 Associations between body composition measures and disease variables in patients with PsO and PsA

Body mass (kg)

 Age (per 5 years)

0.227

 − 1.903, 2.357

0.832

0.415

 − 1.656, 2.487

0.402

 Female sex

 − 7.948

 − 18.583, 2.687

0.140

 − 5.119

 − 15.107, 4.869

0.309

 Psoriatic group

2.297

 − 8.025, 12.618

0.658

1.498

 − 8.450, 11.447

0.764

 Overall activity

12.669

 − 2.180, 2.687

0.91

 HOMA-IR

2.270

0.740, 3.799

0.004

1.392

 − 0.231, 3.016

0.091

 Adiponectin (per 500)

 − 1.206

 − 1.847, − 0.565

 < 0.001

 − 0.946

 − 1.665, − 0.226

0.011

R² = 0.258

Body fat (%)

 Age (per 5 years)

0.721

 − 0.592, 2.035

0.276

1.088

0.02, 2.174

0.050

 Female sex

13.942

8.273, 19.611

 < 0.001

15.817

10.580, 21.054

 < 0.001

 Psoriatic group

 − 0.100

 − 6.539, 6.339

0.975

 − 0.294

 − 5.510, 4.922

0.910

 Overall activity

 − 3.240

 − 12.215, 5.735

0.466

 HOMA-IR

1.068

0.85, 2.051

0.034

0.700

 − 0.152, 1.551

0.105

 Adiponectin (per 500)

 − 0.473

 − 0.850, − 0.096

0.101

 − 0.473

 − 0.850, − 0.096

0.015

R² = 0.474

Fat-free mass (kg)

 Age (per 5 years)

 − 0.089

 − 1.264, 1.087

0.881

 − 0.296

 − 1.188, 0.596

0.508

 Female sex

 − 16.430

 − 20.566, − 12.295

 < 0.001

 − 15.951

 − 20.253, − 11.650

 < 0.001

 Psoriatic group

2.850

 − 2.805, 8.505

0.317

0.399

 − 3.886, 4.683

0.853

 Overall activity

6.079

 − 2.422, 14.580

0.154

 HOMA-IR

0.337

 − 0.564, 1.238

0.457

0.032

 − 0.667, 0.731

0.928

 Adiponectin (per 500)

 − 0.403

 − 0.783, − 0.023

0.038

 − 0.207

 − 0.517, 0.103

0.187

R² = 0.548

WB vol (cm³)

 Age (per 5 years)

329.672

 − 221.020, 880.364

0.236

341.554

 − 137.047, 820.155

0.158

 Female sex

 − 636.001

 − 3474.652, 2202.649

0.655

493.051

 − 1829.215, 2815.318

0.672

 Psoriatic group

1684.112

 − 1002.446, 4370.690

0.214

339.799

 − 1982.724, 2662.322

0.770

 Overall activity

1920.658

 − 1866.044, 5707.360

0.307

 HOMA-IR

851.247

485.799, 1216.696

 < 0.001

562.705

186.934, 938.476

0.004

 Adiponectin (per 500)

 − 288.537

 − 523.101, − 201.594

 < 0.001

− 270.561

− 454.790, − 122.284

0.001

R² = 0.420

WB VAT (cm³)

 Age (per 5 years)

97.200

27.481, 166.920

0.007

66.348

4.112, 128.584

0.037

 Female sex

 − 511.662

 − 865.631, − 157.693

0.05

 − 329.301

 − 631.283, − 27.319

0.033

 Psoriatic group

659.706

341.585, 977.828

 < 0.001

437.101

135.086, 739.117

0.005

 Overall activity

108.348

 − 512.205, 728.900

0.723

 HOMA-IR

74.192

20.413, 127.971

0.008

35.395

 − 13.470, 84.259

0.171

 Adiponectin (per 500)

 − 30.323

 − 53.960, − 6.686

0.013

 − 21.559

 − 43.178, 0.060

0.050

R² = 0.449

WB VAT/SAT

 Age (per 5 years)

0.012

 − 0.004, 0.033

0.203

0.012

 − 0.000, 0.024

0.050

 Female sex

 − 0.167

 − 0.232, − 0.103

 < 0.001

 − 0.140

 − 0.200, − 0.080

 < 0.001

 Psoriatic group

0.127

0.061, 0.194

 < 0.001

 − 0.081

 − 0.021, − 0.140

0.009

 Overall activity

0.041

 − 0.093, 0.175

 < 0.001

 HOMA-IR

0.006

 − 0.005, 0.018

0.280

0.002

 − 0.08, 0.012

0.693

 Adiponectin (per 500)

 − 0.002

 − 0.009, 0.001

0.146

 − 0.002

 − 0.007, 0.002

0.280

R² = 0.491