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Table 2 Distribution of the patients according to the BMI subgroups

From: Obesity is associated with more disability at presentation and after treatment in low back pain but not in neck pain: findings from the OIOC registry

 

LBP cross-sectional

LBP longitudinal

NP cross-sectional

NP longitudinal

Patients: n

548

211

191

71

Underweight (BMI < 18 kg/m2): n (%)

11 (2)a

5 (2)a

6 (3)a

4 (6)a

Lean (BMI 18- < 25 kg/m2): n (%)

198 (36)

83 (39)

94 (49)

33 (46)

Overweight (BMI 25- <30 kg/m2): n (%)

194 (35)

79 (37)

61 (32)

24 (34)a

Obesity class I (BMI 30- < 35 kg/m2): n (%)

94 (18)

31 (15)a

22 (12)a

7 (10)a

Obesity class II–III (BMI ≥ 35 kg/m2): n (%)

51 (9)

13 (6)a

8 (4)a

3 (4)a

  1. agroups that did not meet the calculated sample size for sub-group analysis of 33 patients (power of 80 %, level of significance of 5 %)