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Table 2 Comparison between the mean serum CXCL13 of the RA patients’ group regarding sex, extra-articular affection, seropositivity, and presence of erosion

From: RETRACTED ARTICLE: Does serum B lymphocyte chemoattractant protein13 (CXCL13) level correlate with parameters of disease activity and severity in rheumatoid arthritis? Clinical and musculoskeletal ultrasonographic assessment

Variable

CXCL13 (pg/ml)

Mean ± SD

P value

Sex

Female

394.5 ± 239.5

0.26

Male

373.3 ± 400.9

Extra-articular manifestation

Yes

338.81 ± 200.5

0.75

No

417.84 ± 323.82

RF u/ml

Positive

403.42 ± 287.74

0.23

Negative

185 ± 91.92

Anti-CCP Abs u/ml

Positive

392.31 ± 322.71

0.83

Negative

384.92 ± 243.43

DAS-28

High

819.13 ± 191.05

< 0.001**

Moderate

284.95 ± 137.93

Low

129.5 ± 21.27

Erosion

Positive

553.18 ± 291.85

< 0.001**

Negative

201.07 ± 99.84

  1. CXCL13 serum B lymphocyte chemoattractant protein13, RF rheumatoid factor, Anti-CCP Abs anti-cyclic citrullinated peptide antibodies, DAS-28 28-joint disease activity score, P > 0.05 non-significant, P < 0.001** highly significant