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Table 5 Multivariate analyses testing associations with the outcome variable. Significant findings are in bold.

From: The Nordic back pain subpopulation program: predicting outcome among chiropractic patients in Finland

Models Variables tested OR and 95% CI • Sensitivity • Specificity • Numbers correctly classified • Area under the ROC
"Best" Swedish model re-tested, according to previous study Leg pain 1.6 (1.2–2.1) 41%, 87%, 71.5%, 72%
  Duration of pain past yr 1.1 (0.8–1.6)  
  Better at 2 nd visit 4.7 (3.4–6.6)  
"Full" Swedish model, i.e. including significant variables that had been included in previous study Leg pain 1.5 (1.1–2.0) 47%, 83%, 71%, 72%
  Duration of pain past yr 1.2 (0.8–1.7)  
  Better at 2 nd visit 4.7 (3.4–6.6)  
  Duration of pain at base-line 1.0 (0.7–1.3)  
  Immediate improvement 1.3 (1.0–1.7)  
Improved Swedish model, i.e. removing irrelevant variables from the model above Leg pain 1.6 (1.2–2.2) 41%, 87%, 72%, 71%
  Better at 2 nd visit 4.8 (3.5–6.8)  
Final minimal Swedish model, i.e. retaining the "best" variable Better at 2 nd visit 4.9 (3.6–6.8) 68%, 69%, 69%, 69%
Full Finnish model, i.e. allowing for the three new variables included in the present study Leg pain 1.4 (1.0–2.0) 52%, 83%, 73%, 73%
  Duration of pain past yr 1.1 (0.8–1.6)  
  Better at 2 nd visit 5.0 (3.5–7.1)  
  Duration of pain at base-line 0.9 (0.7–1.3)  
  Immediate improvement 1.2 (0.9–1.6)