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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