Table 7 Correlations of albumin, fibrinogen, FAR with ESR, CRP, BASDAI, BASFI, BASMI, BAG-G scores, and sacroiliac joint radiological findings in AS cases

ESR

− 0.294

0.115

0.258

0.168

0.387

0.035

CRP

− 0.172

0.364

0.510

0.004

0.489

0.006

BASDAI score

− 0.517

0.003

0.785

< 0.001

0.847

< 0.001

BASFI score

− 0.287

0.124

0.404

0.027

0.427

0.019

BASMI score

− 0.532

0.002

0.276

0.140

0.416

0.022

BAS-G score

− 0.357

0.043

0.227

0.228

0.339

0.067

Plain X-ray on SIJ bilateral sacroiliitis

− 0.151

0.425

0.175

0.356

0.218

0.247

MRI on SIJ bilateral sacroiliitis

0.120

0.528

− 0.168

0.375

− 0.173

0.360