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Table 7 Predictor variables were tested against outcome at the 4th visit. The predictor variables were: overweight or obese, leg pain, and not better at 2nd visit.

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

Number of predictor variables present in the patient OR (95% CI) in relation to not being definitely improved at the 4th visit*
0 (index) 1
1 1.8 (1.1–2.9)
2 3.4 (2.1–5.6)
3 10.2 (5.8–18.1)
  1. * The Hosmer-Lemeshow test for goodness-of-fit revealed that this model had a perfect (100%) fit.