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Table 2 Changes in EQ-5D and ODI over 2 years following lumbar spinal stenosis (LSS) surgery

From: Obese people benefit from lumbar spinal stenosis surgery as much as people of normal weight

 

Before surgery

P value*

Change over 2 years

P value*

 

BMI

 

BMI

 
 

Normal

< 25

Overweight

25.0–29.9

Obese

≥30

 

Normal

< 25

Overweight

25.0–29.9

Obese

≥30

 

Mean (±SD)

Mean (±SD)

Mean (±SD)

Mean

(95% CI)

Mean

(95% CI)

Mean

(95% CI)

EQ-5D

0.49 (0.32)

0.48 (0.29)

0.43 (0.28)

0.41

0.23

(0.17 to 0.29)

0.22

(0.17 to 0.27)

0.22

(0.16 to 0.29)

0.92

ODI

28 (21)

30 (20)

36 (20)

0.001

− 17

(− 21 to − 14)

− 15

(− 18 to − 10)

− 14

(− 18 to − 10)

0.54

  1. *Adjusted for age and gender. P value represents change over 2 years in different BMI groups
  2. EQ-5D EuroQol-5D, ODI Oswestry Disability Index