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Table 3 Univariate and multivariate logistic regression analyses of the association between AHA and RA

From: IgG anti-hinge antibodies against IgG4 F(ab’)2 fragments generated using pepsin are useful diagnostic markers for rheumatoid arthritis: implications of the possible roles of metalloproteinases and IgG subclasses in generating immunogenic hinge epitopes

Variable

Univariate analysis

Multivariate analysis

OR (95% CI)

P

OR (95% CI)

P

Analysis 1: total RA vs. HC

 Age

1.03 (0.99–1.06)

0.075

1.04 (1.00–1.09)

0.037

 Gender

1.59 (0.79–3.17)

0.189

2.19 (0.86–5.62)

0.100

 AHA1

1.01 (1.00–1.01)

0.001

1.00 (0.99–1.00)

0.992

 AHA2

1.00 (0.99–1.00)

0.295

 AHA3

1.18 (1.09–1.27)

1 × 10−5

1.16 (1.07–1.26)

3 × 10−4

 AHA4

1.03 (1.00–1.06)

0.025

1.00 (0.96–1.04)

0.825

 AHA5

1.03 (1.02–1.05)

8 × 10−5

1.02 (1.00–1.03)

0.034

 AHA6

1.06 (1.03–1.09)

4 × 10−4

1.01 (0.98–1.04)

0.367

 AHA7

1.16 (1.05–1.28)

0.004

1.04 (0.96–1.13)

0.339

 AHA8

1.65 (1.30–2.09)

3 × 10−4

1.20 (0.89–1.62)

0.226

Analysis 2: DNRA vs. HC

 Age

1.04 (0.98–1.11)

0.226

1.07 (0.98–1.15)

0.115

 Gender

2.62 (0.59–13.21)

0.193

9.29 (1.01–85.3)

0.049

 AHA1

0.99 (0.99–1.01)

0.898

 AHA2

1.00 (0.99–1.00)

0.243

 AHA3

1.16 (1.06–1.27)

0.002

1.18 (1.06–1.32)

0.003

 AHA4

1.03 (0.99–1.07)

0.112

1.03 (0.98–1.08)

0.311

 AHA5

1.01 (0.99–1.03)

0.062

1.01 (0.99–1.03)

0.186

 AHA6

1.00 (0.98–1.03)

0.664

 AHA7

1.06 (0.98–1.15)

0.143

 AHA8

1.21 (0.83–1.70)

0.347

  1. The number of RA patients in analysis 1 and in analysis 2 was 106 and 18, respectively. The number of HC was same as 81 in both analyses