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Table 2 Estimated adjusted effects of BMI on 6-month improvement in disability as measured using Roland-Morris questionnaire (3+ points)

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

Category Odds ratio 95 % confidence ratio
Underweight 1.05 (0.48, 2.30)
Normal weight 1.00a -
Over weight 1.05 (0.67, 1.66)
Obese 0.62 (0.38, 1.00)
  1. Adjusted for gender, race, treatment group, smoking status, duration of LBP, and confidence in treatment effect
  2. aReference category