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Table 3 Estimated Adjusted Effects of BMI on 6-Month Improvement (2+ points) in Subjective Average Back Pain

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

Category Odds ratio 95 % confidence interval
Underweight 1.03 (0.48, 2.19)
Normal weight 1.00a -
Over weight 0.95 (0.60, 1.48)
Obese 0.70 (0.44, 1.13)
  1. Adjusted for gender, race, treatment group, smoking status, duration of LBP, and confidence in treatment effect
  2. aReference category