Table 7

Predicting RA in PIA patients: results of backward stepwise regression, incorporating MSUS variables

Variable

Coding if categorical

B

SE

Wald

P-value

OR (95% CI)


Age

(years)

<50:

0

≥50:

1

1.26

0.51

6.23

0.013

3.59 (1.32 to 9.81)

Presence of GradeIPower Doppler synovitis in ≥1/16 joints

No:

0

    Yes
:

1

1.70

0.52

10.72

0.001

5.46 (1.98 to 15.1)

JPS

n/a

1.39

0.54

6.60

0.010

4.02(1.39 to 11.6)

ESR

(mm/h)

24:

0

≥24:

1

1.17

0.56

4.48

0.034

3.24 (1.09 to 9.60)

ACPA

Neg:

0

Pos:

1

4.06

0.82

24.74

<0.001

58.1(12 to 288)

Constant

-5.38

1.28

17.64

<0.001

-


Results of logistic regression analysis of maximally discriminatory MSUS paramters in addition to previously identified independent predictors for UA amongst 162 patients of PIA sub-cohort. B values are regression coefficients. CI, confidence interval; OR, odds ratio; SE, standard error of B. Additional abbreviations as per Table 3. See text.

Pratt et al. Arthritis Research & Therapy 2013 15:R118   doi:10.1186/ar4298

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