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Table 4 Estimated Adjusted Effects of BMI on 6-Month Improvement (2+ points) in Subjective Most Severe Back Pain

From: The effect of obesity on treatment outcomes for low back pain

Category Odds ratio 95 % confidence interval
Underweight 0.70 (0.36, 1.65)
Normal weight 1.00a -
Over weight 0.82 (0.52, 1.28)
Obese 0.54 (0.34, 0.88)
  1. Adjusted for gender, race, treatment group, smoking status, duration of LBP, confidence in treatment effect, and weight gain
  2. aReference category