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Table 4 Predicting PIA in EAC patients: results of backward stepwise regression, excluding MSUS variables

From: Predicting persistent inflammatory arthritis amongst early arthritis clinic patients in the UK: is musculoskeletal ultrasound required?

Variable Coding if categorical B SE Wald P-value OR (95% CI)
Age
(years)
<50: 0      
  ≥50: 1 -0.80 0.32 6.27 0.012 0.45 (0.24 to 0.84
Sx Durn
(weeks)
n/a -0.030 0.01 12.64 <0.001 0.97 (0.96 to 0.99)
SJC /72 <1: 0      
  ≥1: 1 1.53 0.31 23.94 <0.001 4.61 (2.50 to 8.43)
JPS n/a 0.42 0.26 2.66 0.100 1.52 (0.92 to 2.52)
CRP
(g/l)
<5: 0      
  5 to 14: 1 0.77 0.21 13.48 <0.001 2.16 (1.43 to 3.27)
  ≥14: 2      
ESR
(mm/h)
<24 0      
  ≥24 1 0.79 0.34 5.33 0.021 2.21 (1.13 to 4.32)
ACPA Neg: 0      
  Pos: 1 4.89 1.10 21.36 <0.001 132.4 (17 to 1052)
Constant    -2.12 0.52 16.63 <0.001 -
  1. Results of backward stepwise logistic regression analysis to identify independent clinical (non-MSUS) predictors of PIA amongst EA clinic attendees. B values are regression coefficients. CI, confidence interval; OR, odds ratio; SE, standard error of B. Additional abbreviations as per Table 3. See text.