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Table 3 Association between body mass index and knee pain among subjects (N = 576) with radiographic knee osteoarthritisa

From: The association of BMI and knee pain among persons with radiographic knee osteoarthritis: A cross-sectional study

  

Unadjusted

Adjustedd

BMIb

(n)

ORc

95% CI

OR

95% CI

Pre-Obese

(208)

1.6 *

1.1 – 2.4

1.6*

1.0 – 2.5

Obese I

(119)

2.3 **

1.4 – 3.8

2.0**

1.2 – 3.4

Obese II

(61)

4.5***

2.3 – 8.9

3.9**

1.8 – 8.3

Obese III

(33)

7.8 ***

2.8 – 20.6

7.5**

2.5 – 22.6

  1. * P < 0.05; ** P < 0.01; *** P < 0.0001.
  2. a Kellgren and Lawrence scale for radiographic osteoarthritis (Grades 2+).
  3. b BMI Body Mass Index (kg/m2) WHO Classification: Pre-Obese 25.0–29.9; Obese I 30.0–34.9; Obese II 35.0–39.9; and Obese III 40.0 +.
  4. c OR = odds ratio. Referent group for all odds ratios is Normal BMI 18.5–24.9 (n = 155).
  5. d Adjusted odds ratio models: [Pain = BMI + age + gender + RKOA grade].