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Table 3 Risk scores for low back pain with the inclusion of the Thai ERIQ

From: Development of a risk score for low back pain in office workers - a cross-sectional study

Factors

Beta Coefficient

Risk score*

Previous history of working as an office worker

  

   Yes

0.54

1

   No

 

0

Years of work experience (years)

  

   < 10

 

0

   10-19

1.25

3

   ≥20

0.71

1

Continuous standing >2 hrs/d

  

   Yes

0.62

1

   No

 

0

Frequently bending forward during the work day

  

   Yes

0.58

1

   No

 

0

Chair having lumbar support

  

   Yes

 

0

   No

0.50

1

Backache Index

  

   0

 

0

   ≥1

1.39

3

Effort-Reward ratio

  

   ≤ 1

 

0

   >1

1.86

4

  1. * Reference groups were assigned a score of 0. β Coefficient of chair without lumbar support was assigned a score of 1 and then the other β Coefficient was multiplied by 2 (1/0.50) and rounded off to the nearest integer.